| 1 | #! /usr/bin/env perl |
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| 2 | # |
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| 3 | # Parse a "<>.castep" or "<>.phonon" or "<>.bands" output file |
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| 4 | |
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| 5 | use POSIX; |
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| 6 | use Getopt::Long; |
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| 7 | #use Math::Complex; |
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| 8 | use strict; |
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| 9 | #use warnings; |
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| 10 | |
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| 11 | sub usage { |
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| 12 | printf STDERR "Usage: dos.pl [-xg] [-ps|-eps] [-np] <seed>.castep|<seed>.phonon ... \n"; |
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| 13 | printf STDERR " Extract phonon or bandstructure data from .castep, .phonon or .bands files"; |
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| 14 | printf STDERR " and optionally prepare a DOS plot using XMGRACE as a backend."; |
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| 15 | printf STDERR " -xg Write a script and invoke GRACE to plot data.\n"; |
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| 16 | printf STDERR " -gp Write a script and invoke GNUPLOT to plot data.\n"; |
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| 17 | printf STDERR " -ps Invoke GRACE to plot data and write as a PostScript file.\n"; |
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| 18 | printf STDERR " -eps Invoke GRACE to plot data and write as an encapsulated.\n PostScript (EPS) file.\n"; |
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| 19 | printf STDERR " -np Do not plot data, write a GRACE script.\n"; |
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| 20 | printf STDERR " -bs Read band-structure from <>.castep or <>.bands.\n"; |
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| 21 | printf STDERR " -mirror Plot spin-polarized electronic DOS using \"mirror\" plot.\n"; |
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| 22 | printf STDERR " -b w Set histogram resolution for binning (eV or cm**-1).\n"; |
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| 23 | printf STDERR " -ir Extract ir intensities and model (fundamentals-only) ir spectrum from .phonon.\n"; |
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| 24 | printf STDERR " -raman Extract raman intensities and model (fundamentals-only) raman spectrum from .phonon.\n"; |
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| 25 | printf STDERR " -temp T Temperature to use (in raman spectrum modelling).\n"; |
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| 26 | printf STDERR " -expt FILE Read experimental data from EXPT and overplot.\n"; |
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| 27 | printf STDERR " -dat Reread standard output from previous run and plot.\n"; |
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| 28 | printf STDERR " -w s Set Gaussian/Lorentzian FWHM for broadening.\n"; |
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| 29 | printf STDERR " -lorentz Use Lorentzian broadening instead of Gaussian\n"; |
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| 30 | printf STDERR " -v Be verbose about progress\n"; |
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| 31 | printf STDERR " -z Print zero-point energy\n"; |
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| 32 | die; |
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| 33 | } |
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| 34 | |
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| 35 | my $number = qr/-?(?:\d+\.?\d*|\d*\.?\d+)(?:[Ee][+-]?\d{1-3})?/o; |
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| 36 | my $fnumber = qr/-?(?:\d+\.?\d*|\d*\.?\d+)/o; |
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| 37 | |
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| 38 | my $qtol = 5.0e-6; |
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| 39 | my $fzerotol = 3.0; |
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| 40 | my $bwidth = 1.0; |
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| 41 | my $gwidth = 10.0; |
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| 42 | my $pi=3.14159265358979; |
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| 43 | |
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| 44 | my $castep_phonon_re = qr/^ +\+ +q-pt= +\d+ \( *( *$fnumber) *($fnumber) *($fnumber)\) +($fnumber) +\+/o; |
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| 45 | my $dot_phonon_re = ''; |
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| 46 | |
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| 47 | my $castep_bs_re = qr/^ \+ +Spin=(\d) kpt= +(\d+) \( *( *$fnumber) *($fnumber) *($fnumber)\) +kpt-group= +\d +\+/o; |
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| 48 | my $dot_bands_re = ''; |
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| 49 | |
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| 50 | my $castep_re; |
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| 51 | |
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| 52 | my ($grflag, $gpflag, $plotflag, $datflag, $irflag, $ramanflag, $psflag, $qlabels, $exptfile, $exptq, $abscissa,$verbose) = ("", "", "","","","","","",""); |
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| 53 | my ($title, $fileroot, $xlabel, $ylabel, $fermi_u, $fermi_d, $i,$freq,$exptn, $wt, $b, $temperature, $lorentzian, $zpe, $nqlast,$spin_polarised); |
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| 54 | |
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| 55 | my (@freqs, @freqs_d, @qpts, @weights, @dos, @dos_u, @dos_d, @ir_intensities, @r_intensities, $base); |
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| 56 | |
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| 57 | my ($opt_xg, $opt_gp, $opt_np, $opt_ps, $opt_eps, $opt_bs, $opt_mirror, $opt_bw,$opt_ir, $opt_raman, $opt_temp, $opt_lorentz, $opt_dat, $opt_expt, $opt_gwidth,$opt_help,$opt_v,$opt_z) = (0,0,0,0,0,0,0,"",0,0,0,0); |
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| 58 | |
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| 59 | &GetOptions("xg" => \$opt_xg, |
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| 60 | "gp" => \$opt_gp, |
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| 61 | "np" => \$opt_np, |
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| 62 | "ps" => \$opt_ps, |
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| 63 | "eps" => \$opt_eps, |
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| 64 | "bs" => \$opt_bs, |
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| 65 | "mirror" => \$opt_mirror, |
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| 66 | "b=f" => \$opt_bw, |
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| 67 | "ir" => \$opt_ir, |
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| 68 | "raman" => \$opt_raman, |
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| 69 | "temp=f" => \$opt_temp, |
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| 70 | "dat" => \$opt_dat, |
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| 71 | "expt=s" => \$opt_expt, |
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| 72 | "lorentz" => \$opt_lorentz, |
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| 73 | "w=s" => \$opt_gwidth, |
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| 74 | "h|help" => \$opt_help, |
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| 75 | "v" => \$opt_v, |
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| 76 | "z" => \$opt_z) || &usage(); |
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| 77 | |
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| 78 | if ($opt_help || $opt_ps && $opt_eps) {&usage()}; |
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| 79 | |
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| 80 | $grflag= $opt_xg if $opt_xg; |
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| 81 | $gpflag= $opt_gp if $opt_gp; |
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| 82 | $plotflag = 1; |
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| 83 | $plotflag= 0 if $opt_np; |
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| 84 | $psflag = 0; |
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| 85 | $psflag= 1 if $opt_ps; |
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| 86 | $psflag= 2 if $opt_eps; |
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| 87 | $grflag = 1 if $psflag && ! ($grflag || $gpflag) ; |
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| 88 | $exptfile = ""; |
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| 89 | $exptfile = $opt_expt if $opt_expt; |
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| 90 | $datflag = 1 if $opt_dat; |
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| 91 | $gwidth = $opt_gwidth if $opt_gwidth; |
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| 92 | $verbose = 0; |
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| 93 | $verbose = 1 if $opt_v; |
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| 94 | $opt_bs = 1 if( $#ARGV >= 0 && $ARGV[0]=~ /\.bands$/ ); |
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| 95 | $opt_bs = 1 if $opt_mirror; |
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| 96 | $opt_bs = 0 if( $#ARGV >= 0 && $ARGV[0]=~ /\.phonon$/ ); |
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| 97 | $irflag = $opt_ir; |
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| 98 | $ramanflag = $opt_raman; |
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| 99 | $temperature = 300; |
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| 100 | $temperature=$opt_temp if $opt_temp; |
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| 101 | $lorentzian = $opt_lorentz; |
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| 102 | |
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| 103 | if ($#ARGV >= 0) { |
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| 104 | $title=$ARGV[0]; |
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| 105 | $title=~s/\.(phonon|castep|bands)//; |
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| 106 | } else { |
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| 107 | $title = ""; |
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| 108 | } |
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| 109 | $fileroot=$title; |
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| 110 | |
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| 111 | if( $opt_bs ) { |
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| 112 | $castep_re = $castep_bs_re; |
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| 113 | if( $grflag ) { |
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| 114 | $xlabel = '\\f{Symbol}e\\f{} (eV)'; |
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| 115 | $ylabel = 'g(\\f{Symbol}e\\f{})'; |
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| 116 | } elsif ($gpflag ) { |
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| 117 | $xlabel = '{/Symbol e} (eV)'; |
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| 118 | $ylabel = 'g({/Symbol e})'; |
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| 119 | } |
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| 120 | $gwidth = 0.1; |
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| 121 | $gwidth = $opt_gwidth if $opt_gwidth; |
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| 122 | $bwidth = 0.05; |
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| 123 | $fzerotol = 0.0; |
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| 124 | } else { |
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| 125 | $castep_re = $castep_phonon_re; |
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| 126 | if( $grflag ) { |
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| 127 | $xlabel = '\\f{Symbol}w\\f{} (cm\\S-1\\N)'; |
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| 128 | $ylabel = 'g(\\f{Symbol}w\\f{})'; |
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| 129 | } elsif ($gpflag ) { |
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| 130 | $xlabel = '{/Symbol w} (cm^{-1})'; |
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| 131 | $ylabel = 'g({/Symbol w})'; |
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| 132 | } |
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| 133 | } |
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| 134 | $bwidth = $opt_bw if( $opt_bw ); |
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| 135 | |
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| 136 | |
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| 137 | if ($plotflag ) { |
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| 138 | if( $grflag) { |
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| 139 | if( $psflag ) { |
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| 140 | open STDOUT, "| gracebat -pipe -nosafe" or die "Failed to open pipe to GRACEBAT process"; |
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| 141 | } else { |
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| 142 | open STDOUT, "| xmgrace -pipe" or die "Failed to open pipe to GRACE process"; |
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| 143 | } |
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| 144 | } elsif ($gpflag) { |
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| 145 | if( $psflag ) { |
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| 146 | open STDOUT, "| gnuplot -persist - 2>/dev/null 1>&2" or die "Failed to open pipe to GNUPLOT process"; |
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| 147 | } else { |
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| 148 | open STDOUT, "| gnuplot -persist - 2>/dev/null 1>&2" or die "Failed to open pipe to GNUPLOT process"; |
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| 149 | } |
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| 150 | } |
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| 151 | } |
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| 152 | |
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| 153 | |
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| 154 | #$pos = tell ARGV; |
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| 155 | $_ = <>; |
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| 156 | seek ARGV,0,0; |
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| 157 | if ($datflag) { |
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| 158 | reread_data(\@freqs,\@qpts); |
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| 159 | } elsif ( /^ \+-+\+\s*$/) { |
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| 160 | if( $opt_bs ) { |
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| 161 | read_dot_castep_bands(\@freqs,\@freqs_d,\@qpts, \$fermi_u, \$fermi_d, \@weights); |
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| 162 | } else { |
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| 163 | read_dot_castep_phonon(\@freqs,\@qpts, \@weights, \@ir_intensities, \@r_intensities); |
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| 164 | } |
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| 165 | } else { |
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| 166 | if( $opt_bs ) { |
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| 167 | read_dot_bands(\@freqs,\@freqs_d,\@qpts, \$fermi_u, \$fermi_u, \@weights); |
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| 168 | } else { |
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| 169 | read_dot_phonon(\@freqs,\@qpts, \@weights, \@ir_intensities, \@r_intensities); |
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| 170 | } |
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| 171 | } |
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| 172 | |
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| 173 | $spin_polarised = $#{$freqs_d[0]} > 0; |
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| 174 | |
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| 175 | $base = 1.0e21; |
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| 176 | if( $irflag ) { |
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| 177 | compute_dos(\@freqs, \@weights, \@dos_u, $bwidth, $gwidth, \$base, \@ir_intensities); |
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| 178 | } elsif( $ramanflag ) { |
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| 179 | compute_raman(\@freqs, \@weights, \@dos_u, $bwidth, $gwidth, \$base, \@r_intensities); |
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| 180 | } else { |
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| 181 | $zpe = compute_zpe(\@freqs, \@weights); |
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| 182 | printf STDERR "Zero Point Energy = %12.6f eV\n", $zpe if $opt_z; |
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| 183 | compute_dos(\@freqs, \@weights, \@dos_u, $bwidth, $gwidth, \$base); |
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| 184 | compute_dos(\@freqs_d, \@weights, \@dos_d, $bwidth, $gwidth, \$base) if ($opt_bs && $spin_polarised) ; |
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| 185 | } |
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| 186 | |
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| 187 | @dos = (\@dos_u, \@dos_d); |
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| 188 | |
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| 189 | if( $grflag ) { |
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| 190 | if( $opt_bs ) { |
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| 191 | graceout(\@dos, $base, $bwidth, $fileroot, $psflag, $xlabel, $ylabel, $title, $fermi_u); |
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| 192 | } else { |
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| 193 | graceout(\@dos, $base, $bwidth, $fileroot, $psflag, $xlabel, $ylabel, $title,"" ,$exptn); |
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| 194 | } |
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| 195 | } elsif( $gpflag ) { |
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| 196 | if( $opt_bs ) { |
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| 197 | gnuplotout(\@dos, $base, $bwidth, $fileroot, $psflag, $xlabel, $ylabel, $title, $fermi_u); |
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| 198 | } else { |
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| 199 | gnuplotout(\@dos, $base, $bwidth, $fileroot, $psflag, $xlabel, $ylabel, $title,"" ,$exptn); |
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| 200 | } |
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| 201 | |
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| 202 | } else { |
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| 203 | if ($opt_bs && $spin_polarised > 0) { |
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| 204 | for $b (0..$#dos_u) { |
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| 205 | printf "%12.6f %12.6f %12.6f\n", $b*$bwidth+$base, $dos_u[$b],$dos_d[$b]; |
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| 206 | } |
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| 207 | } else { |
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| 208 | |
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| 209 | for $b (0..$#dos_u) { |
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| 210 | printf "%12.6f %12.6f\n", $b*$bwidth+$base, $dos_u[$b]; |
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| 211 | } |
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| 212 | } |
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| 213 | } |
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| 214 | |
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| 215 | # |
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| 216 | # End of executable part -- subroutines follow. |
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| 217 | # |
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| 218 | |
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| 219 | sub reread_data { |
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| 220 | my($freqs, $qpts) = @_; |
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| 221 | my( $count, $pt); |
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| 222 | my(@freqk,@q,@line, $nfreqs, $pltcoord ); |
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| 223 | |
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| 224 | $count = 0; |
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| 225 | |
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| 226 | while ( <> ) { |
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| 227 | # |
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| 228 | # <>.txt |
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| 229 | # |
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| 230 | print STDERR $_ if $verbose; |
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| 231 | @line = split; |
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| 232 | |
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| 233 | $pt = shift @line; |
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| 234 | @q = splice @line, 0, 3; |
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| 235 | $pltcoord = shift @line; |
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| 236 | @freqk = @line; |
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| 237 | |
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| 238 | die "Need sequentially numbered lines ($pt != $count)" unless $pt == $count; |
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| 239 | if( $count > 1 ) { |
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| 240 | die "Every line should have same number of values" unless $nfreqs == $#freqk; |
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| 241 | } |
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| 242 | |
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| 243 | $count++; |
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| 244 | $nfreqs = $#freqk; |
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| 245 | push @$freqs, [@freqk]; |
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| 246 | push @$qpts, [@q]; |
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| 247 | |
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| 248 | } |
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| 249 | } |
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| 250 | |
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| 251 | sub read_dot_castep_phonon { |
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| 252 | my($freqs, $qpts, $weights, $intens, $rintens) = @_; |
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| 253 | my(@freqk,@q,@intensk,@rintensk); |
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| 254 | my ($weight); |
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| 255 | |
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| 256 | while ( <>) { |
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| 257 | # |
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| 258 | # <>.castep |
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| 259 | # |
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| 260 | if (/$castep_phonon_re/o) { |
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| 261 | @q=($1,$2,$3); |
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| 262 | $weight = $4; |
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| 263 | print STDERR "Reading $q[0] $q[1] $q[2] $weight\n" if $verbose; |
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| 264 | #print " "; |
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| 265 | last if eof ARGV; |
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| 266 | $_ = <>; |
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| 267 | last if eof ARGV; |
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| 268 | $_ = <> if /^ +\+ +Effective cut-off =/; |
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| 269 | last if eof ARGV; |
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| 270 | $_ = <> if /^ +\+ +q->0 along \( *( *$fnumber) *($fnumber) *($fnumber)\) +\+/; |
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| 271 | last if eof ARGV; |
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| 272 | $_ = <> if /^ +\+ -+ \+/; |
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| 273 | @freqk=(); |
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| 274 | @intensk=(); |
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| 275 | @rintensk=(); |
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| 276 | |
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| 277 | while (<>) { |
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| 278 | if (/^ +\+ +\d+ +($fnumber)( +\w)? *($fnumber)?( +[YN])? *($fnumber)?( +[YN])? *\+/) { |
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| 279 | push @freqk, $1; |
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| 280 | push @intensk, $3; |
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| 281 | push @rintensk, $5; |
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| 282 | # } elsif (/^ \+ +q->0 along \( *( *$fnumber) *($fnumber) *($fnumber)\) +\+/ ) { |
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| 283 | } elsif (/^ +\+ -+ \+/) { |
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| 284 | last; |
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| 285 | } elsif (/^ +\+ +.*\+/) { |
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| 286 | } else { |
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| 287 | last; |
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| 288 | } |
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| 289 | } |
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| 290 | push @$freqs, [@freqk]; |
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| 291 | push @$intens, [@intensk]; |
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| 292 | push @$rintens, [@rintensk]; |
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| 293 | push @$qpts, [@q]; |
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| 294 | push @$weights, $weight; |
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| 295 | last if eof ARGV; |
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| 296 | } |
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| 297 | } |
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| 298 | } |
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| 299 | |
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| 300 | sub read_dot_castep_bands { |
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| 301 | my($freqs_u, $freqs_d, $qpts, $fermi_u, $fermi_d, $weights) = @_; |
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| 302 | my(@freqk,@q,@kp_map,$kp_count,$spin,$kpt,$weight,$nk); |
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| 303 | |
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| 304 | $kp_count = 0; |
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| 305 | while ( <>) { |
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| 306 | # |
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| 307 | # <>.castep |
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| 308 | # |
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| 309 | $$fermi_u = $1 if /^ \+ Fermi energy for spin up electrons is:\s+ ($number)[^+]+\+/; |
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| 310 | $$fermi_d = $1 if /^ \+ Fermi energy for spin down electrons is:\s+ ($number)[^+]+\+/; |
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| 311 | if (/$castep_bs_re/o) { |
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| 312 | ($spin,$kpt,@q,$weight)=($1,$2,$3,$4,$5,$6); |
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| 313 | print STDERR "Reading Spin=$spin;kpt=$kpt ($q[0],$q[1],$q[2]) $weight\n" if $verbose; |
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| 314 | #print " "; |
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| 315 | last if eof ARGV; |
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| 316 | $_ = <>; |
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| 317 | last if eof ARGV; |
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| 318 | $_ = <> if /^ \+ -+ \+/; |
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| 319 | @freqk=(); |
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| 320 | |
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| 321 | while (<>) { |
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| 322 | if (/^ \+ +\d+ +($fnumber)( +\w)?( +$fnumber)* *\+/) { # This matches exptl IR -active format |
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| 323 | push @freqk, $1; |
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| 324 | # } elsif (/^ \+ +q->0 along \( *( *$fnumber) *($fnumber) *($fnumber)\) +\+/ ) { |
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| 325 | } elsif (/^ \+ -+ \+/) { |
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| 326 | last; |
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| 327 | } elsif (/^ \+ +.*\+/) { |
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| 328 | } else { |
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| 329 | last; |
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| 330 | } |
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| 331 | } |
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| 332 | print STDERR @freqk,"\n" if $verbose; |
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| 333 | # |
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| 334 | # Keep track of kpt ordering for spin=2. Assumes all spin=1 precede spin=2. |
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| 335 | # |
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| 336 | if( $spin == 1 ) { |
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| 337 | $kp_map[$kpt] = $kp_count++; |
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| 338 | push @$freqs_u, [@freqk]; |
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| 339 | push @$qpts, [@q]; |
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| 340 | push @$weights, 1.0; |
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| 341 | } else { |
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| 342 | push @{$freqs_d[$kp_map[$kpt]]}, @freqk; |
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| 343 | } |
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| 344 | last if eof ARGV; |
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| 345 | } |
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| 346 | } |
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| 347 | for $nk (0..$#weights) { |
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| 348 | $weights[$nk] = 1.0/$kp_count; |
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| 349 | } |
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| 350 | } |
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| 351 | |
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| 352 | sub min { |
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| 353 | my ($a,$b) = @_; |
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| 354 | return $a if $a < $b; |
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| 355 | return $b; |
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| 356 | } |
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| 357 | |
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| 358 | sub max { |
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| 359 | my ($a,$b) = @_; |
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| 360 | return $a if $a > $b; |
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| 361 | return $b; |
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| 362 | } |
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| 363 | |
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| 364 | sub read_dot_phonon { |
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| 365 | my($freqs, $qpts, $weights, $intens, $rintens) = @_; |
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| 366 | my(@freqk,@freqk_r,@freqk_o,@q,@eigvec, @oeigvec, @qmapt, @qmap, @intensk, @rintensk); |
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| 367 | my(@coords,@xyz,@corrmat); |
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| 368 | my($x,$y,$z,$nions,$nmodes, $ion,$aty, $mass, $count, $mode, $omode,$dot); |
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| 369 | my($qmode,$qomode,$dot_same,$savedot,$maxdot,$save,$qmaxdot,$weight); |
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| 370 | |
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| 371 | # |
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| 372 | # Read frequencies from <>.phonon file |
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| 373 | # |
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| 374 | # Also reads eigenvectors and attempts to join up branches |
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| 375 | # on the dispersion curve using a heuristic algorithm based |
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| 376 | # assuming close to orthonormality of eigenvectors at |
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| 377 | # adjacent q-points. |
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| 378 | # |
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| 379 | @$weights = (); |
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| 380 | @$qpts = (); |
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| 381 | @$freqs = (); |
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| 382 | @$intens = (); |
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| 383 | while (<>) { |
|---|
| 384 | # |
|---|
| 385 | # <>.phonon |
|---|
| 386 | # |
|---|
| 387 | $nions = $1 if /^ Number of ions\s*(\d+)/; |
|---|
| 388 | $nmodes = $1 if /^ Number of branches\s*(\d+)/; |
|---|
| 389 | if( / Fractional Co-ordinates/../ end.*header/i) { |
|---|
| 390 | if( /^\s+\d+(\s+$fnumber){3}\s+[A-Za-z]{1,2}\s+$fnumber/ ) { |
|---|
| 391 | ($ion,$x,$y,$z,$aty,$mass) = split; |
|---|
| 392 | push @coords, [$x,$y,$z]; |
|---|
| 393 | } |
|---|
| 394 | } |
|---|
| 395 | # |
|---|
| 396 | # Found start of block of frequencies |
|---|
| 397 | # |
|---|
| 398 | if (/^ +q-pt= +(\d+) +($fnumber) +($fnumber) +($fnumber) *($fnumber){0,4}/) { |
|---|
| 399 | # if (/^ +q-pt= +\d+ +($fnumber) *($fnumber) *($fnumber) ( *$fnumber){0,4}$/) { |
|---|
| 400 | @q=($2,$3,$4); |
|---|
| 401 | $weight = $5; |
|---|
| 402 | # |
|---|
| 403 | # Test for repeated q-point and assign zero weight to copies |
|---|
| 404 | # |
|---|
| 405 | $weight = 0.0 if( $1 == $nqlast ); |
|---|
| 406 | $nqlast = $1; |
|---|
| 407 | print STDERR " ",$q[0]," ",$q[1]," ",$q[2]," ",$weight,"\n" if $verbose; |
|---|
| 408 | #print " "; |
|---|
| 409 | @intensk=(); |
|---|
| 410 | @rintensk=(); |
|---|
| 411 | @freqk_r=(); |
|---|
| 412 | |
|---|
| 413 | while (<>) { |
|---|
| 414 | if (/^ +\d+ +($fnumber) +($fnumber) +($fnumber)/) { |
|---|
| 415 | push @freqk_r, $1; |
|---|
| 416 | push @intensk, $2; |
|---|
| 417 | push @rintensk, $3; |
|---|
| 418 | } elsif (/^ +\d+ +($fnumber) +($fnumber)/) { |
|---|
| 419 | push @freqk_r, $1; |
|---|
| 420 | push @intensk, $2; |
|---|
| 421 | } elsif (/^ +\d+ +($fnumber) */) { |
|---|
| 422 | push @freqk_r, $1; |
|---|
| 423 | } else { |
|---|
| 424 | last; |
|---|
| 425 | } |
|---|
| 426 | } |
|---|
| 427 | # print STDERR @freqk_r,"\n"; |
|---|
| 428 | push @$qpts, [@q]; |
|---|
| 429 | push @$freqs, [@freqk_r]; |
|---|
| 430 | push @$intens, [@intensk]; |
|---|
| 431 | push @$rintens, [@rintensk]; |
|---|
| 432 | push @$weights, $weight; |
|---|
| 433 | } |
|---|
| 434 | } |
|---|
| 435 | } |
|---|
| 436 | |
|---|
| 437 | sub read_dot_bands { |
|---|
| 438 | my($freqs_u, $freqs_d, $qpts, $fermi, $fermi1, $weights) = @_; |
|---|
| 439 | my(@eigk,@k, @freq_list, @qpt_list, @nk_list, @wt_list); |
|---|
| 440 | my($wt, $first, $Hartree,$nk,$ink,$ink_save, $ncount, $cpt, $spin_polarised); |
|---|
| 441 | |
|---|
| 442 | $Hartree =27.2114; |
|---|
| 443 | $first = 1; |
|---|
| 444 | $nk = -1; |
|---|
| 445 | $ncount = 0; |
|---|
| 446 | $spin_polarised = 0; |
|---|
| 447 | $cpt = 0; |
|---|
| 448 | # |
|---|
| 449 | # Pass 1 - read the data |
|---|
| 450 | while (<>) { |
|---|
| 451 | # |
|---|
| 452 | # <>.bands |
|---|
| 453 | # |
|---|
| 454 | chop; |
|---|
| 455 | if (/^K-point +(\d+) +($fnumber) *($fnumber) *($fnumber) *($fnumber)/) { |
|---|
| 456 | if( ! $first ) { |
|---|
| 457 | push @{$freq_list[$cpt]}, [@eigk]; |
|---|
| 458 | push @qpt_list, [@k]; |
|---|
| 459 | push @nk_list, $nk; |
|---|
| 460 | push @wt_list, $wt; |
|---|
| 461 | print STDERR "Read K-point $nk, ($qpt_list[$ncount-1][0],$qpt_list[$ncount-1][1],$qpt_list[$ncount-1][2])\n" if $verbose; |
|---|
| 462 | } |
|---|
| 463 | $first = 0; |
|---|
| 464 | if( $1 == 1 and $ncount > 1 ) { |
|---|
| 465 | if( $ncount == $nk+1) { |
|---|
| 466 | $nk = $ncount; |
|---|
| 467 | } else { |
|---|
| 468 | print STDERR "Don't know what to do with duplicate k-point $ncount\n"; |
|---|
| 469 | $nk = -1; |
|---|
| 470 | } |
|---|
| 471 | } else { |
|---|
| 472 | $nk = $1-1; |
|---|
| 473 | } |
|---|
| 474 | @k=($2,$3,$4); |
|---|
| 475 | $wt = $5; |
|---|
| 476 | @eigk=(); |
|---|
| 477 | $ncount++; |
|---|
| 478 | $cpt = 0; |
|---|
| 479 | } elsif (/^Spin component 1/) { |
|---|
| 480 | } elsif (/^Spin component 2/) { |
|---|
| 481 | push @{$freq_list[0]}, [@eigk]; |
|---|
| 482 | print STDERR "Read K-point $nk, ($qpt_list[$ncount-1][0],$qpt_list[$ncount-1][1],$qpt_list[$ncount-1][2]), spin 2\n" if $verbose; |
|---|
| 483 | @eigk=(); |
|---|
| 484 | |
|---|
| 485 | $cpt = 1; |
|---|
| 486 | $spin_polarised = 1; |
|---|
| 487 | } elsif (/^ +($fnumber)\s*$/) { |
|---|
| 488 | push @eigk, $1*$Hartree; |
|---|
| 489 | } elsif ( /Fermi energy \(in atomic units\) +($fnumber)/ ) { |
|---|
| 490 | $$fermi = $1 * $Hartree; |
|---|
| 491 | } elsif ( /Fermi energies \(in atomic units\) +($fnumber) +($fnumber)/ ) { |
|---|
| 492 | $$fermi = $1 * $Hartree; |
|---|
| 493 | $$fermi1 = $1 * $Hartree; |
|---|
| 494 | } |
|---|
| 495 | } |
|---|
| 496 | push @{$freq_list[$cpt]}, [@eigk]; |
|---|
| 497 | if( $cpt - 0 > 0 ) { # Force conversion to F.P. |
|---|
| 498 | # |
|---|
| 499 | # Already have k-point and weight if this is second spin component |
|---|
| 500 | # |
|---|
| 501 | push @qpt_list, [@k]; |
|---|
| 502 | push @nk_list, $nk; |
|---|
| 503 | push @wt_list, $wt; |
|---|
| 504 | } |
|---|
| 505 | |
|---|
| 506 | print STDERR "Read K-point $nk, ($qpt_list[$ncount-1][0],$qpt_list[$ncount-1][1],$qpt_list[$ncount-1][2])\n" if $verbose; |
|---|
| 507 | # |
|---|
| 508 | # Reorder list and store into output arrays |
|---|
| 509 | # |
|---|
| 510 | $ink_save = -1; |
|---|
| 511 | for $ink (0..$#nk_list) { |
|---|
| 512 | $nk = $nk_list[$ink]; |
|---|
| 513 | print STDERR "Reordering K-point $nk, ($qpt_list[$ink][0],$qpt_list[$ink][1],$qpt_list[$ink][2])\n" if $verbose; |
|---|
| 514 | if( $nk < 0 ) { |
|---|
| 515 | $ink_save = $ink; |
|---|
| 516 | } else { |
|---|
| 517 | $$freqs_u[$nk] = $freq_list[0][$ink]; |
|---|
| 518 | $$freqs_d[$nk] = $freq_list[1][$ink] if $spin_polarised; |
|---|
| 519 | |
|---|
| 520 | $$qpts[$nk] = $qpt_list[$ink]; |
|---|
| 521 | $$weights[$nk] = $wt_list[$ink]; |
|---|
| 522 | } |
|---|
| 523 | } |
|---|
| 524 | print STDERR "Spin_polarised=",$spin_polarised,"\n"; |
|---|
| 525 | # |
|---|
| 526 | # Due to a CASTEP bug some state may be double-labelled. In that case we have a "spare" set |
|---|
| 527 | # of frequencies in $ink_save. See if we can guess where to put it. |
|---|
| 528 | for $ink (1..$#$qpts) { |
|---|
| 529 | if( $#{$$freqs_u[$ink]} < 1 ) { # Aha! |
|---|
| 530 | print STDERR "Placing missing K-point $ink, ($qpt_list[$ink_save][0],$qpt_list[$ink_save][1],$qpt_list[$ink_save][2])\n" if $verbose; |
|---|
| 531 | |
|---|
| 532 | $$freqs_u[$ink] = $freq_list[0][$ink_save]; |
|---|
| 533 | $$freqs_d[$ink] = $freq_list[1][$ink_save] if $spin_polarised; |
|---|
| 534 | $$qpts[$ink] = $qpt_list[$ink_save]; |
|---|
| 535 | } |
|---|
| 536 | } |
|---|
| 537 | |
|---|
| 538 | } |
|---|
| 539 | |
|---|
| 540 | sub ftrim { |
|---|
| 541 | my($val,$prec) = @_; |
|---|
| 542 | my($str,$w); |
|---|
| 543 | |
|---|
| 544 | $w=$prec+2; |
|---|
| 545 | $str = sprintf "%${w}.${prec}f",$val; |
|---|
| 546 | $str =~ s/0+$//; |
|---|
| 547 | $str; |
|---|
| 548 | } |
|---|
| 549 | |
|---|
| 550 | sub graceout { |
|---|
| 551 | my($dos, $base, $bwidth, $plotfile, $psflag, $xlabel, $ylabel, $title, $fermi, $fexptl ) = @_; |
|---|
| 552 | my($i, $setnum); |
|---|
| 553 | my($xmax, $ymax, $n, $ncpts, $sign); |
|---|
| 554 | |
|---|
| 555 | $| = 1; |
|---|
| 556 | $xmax = $base+$bwidth*$#{$dos->[0]}; |
|---|
| 557 | |
|---|
| 558 | print "\@timestamp def \"",scalar(localtime),"\"\n"; |
|---|
| 559 | print "\@with g0\n"; |
|---|
| 560 | print "\@title \"",$title,"\"\n"; |
|---|
| 561 | print "\@world xmin $base\n"; |
|---|
| 562 | print "\@world xmax $xmax\n"; |
|---|
| 563 | print "\@view ymin 0.35\n"; |
|---|
| 564 | print "\@view xmax 0.75\n"; |
|---|
| 565 | print "\@legend 0.625, 0.825\n"; |
|---|
| 566 | print "\@autoscale onread xyaxes\n"; |
|---|
| 567 | |
|---|
| 568 | print "\@xaxis label \"$xlabel\"\n"; |
|---|
| 569 | print "\@yaxis label \"$ylabel\"\n"; |
|---|
| 570 | |
|---|
| 571 | $setnum=0; |
|---|
| 572 | if( $#{$dos->[1]} > 0 ) { |
|---|
| 573 | print "\@ G0.S",$setnum," line color 2\n"; |
|---|
| 574 | print "\@ G0.S",$setnum," legend \"\\f{Symbol}a\\f{}\"\n"; |
|---|
| 575 | } |
|---|
| 576 | printf STDOUT "\@target G0.S%d\n",$setnum; |
|---|
| 577 | print "\@type xy\n"; |
|---|
| 578 | |
|---|
| 579 | $ymax = 0.0; |
|---|
| 580 | foreach $n (0..$#{$dos->[0]}) { |
|---|
| 581 | printf STDOUT "%15.6f %15.6f\n", $n*$bwidth+$base, ${$dos->[0]}[$n]; |
|---|
| 582 | $ymax = ${$dos->[0]}[$n] if ${$dos->[0]}[$n] > $ymax; |
|---|
| 583 | } |
|---|
| 584 | print "&\n"; |
|---|
| 585 | # |
|---|
| 586 | # 2nd component? |
|---|
| 587 | # |
|---|
| 588 | if( $#{$dos->[1]} > 0 ) { |
|---|
| 589 | $setnum++; |
|---|
| 590 | |
|---|
| 591 | $sign = 1; |
|---|
| 592 | if( $opt_mirror ){ |
|---|
| 593 | $sign = -1; |
|---|
| 594 | |
|---|
| 595 | print "\@altxaxis on\n"; |
|---|
| 596 | print "\@altxaxis type zero true\n"; |
|---|
| 597 | print "\@altxaxis tick off\n"; |
|---|
| 598 | print "\@altxaxis ticklabel off\n"; |
|---|
| 599 | |
|---|
| 600 | } |
|---|
| 601 | |
|---|
| 602 | print "\@ G0.S",$setnum," line color 4\n"; |
|---|
| 603 | print "\@ G0.S",$setnum," legend \"\\f{Symbol}b\\f{}\"\n"; |
|---|
| 604 | printf STDOUT "\@target G0.S%d\n",$setnum; |
|---|
| 605 | print "\@type xy\n"; |
|---|
| 606 | |
|---|
| 607 | foreach $n (0..$#{$dos->[1]}) { |
|---|
| 608 | printf STDOUT "%15.6f %15.6f\n", $n*$bwidth+$base, $sign*${$dos->[1]}[$n]; |
|---|
| 609 | $ymax = ${$dos->[1]}[$n] if ${$dos->[1]}[$n] > $ymax; |
|---|
| 610 | } |
|---|
| 611 | print "&\n"; |
|---|
| 612 | |
|---|
| 613 | } |
|---|
| 614 | $setnum++; |
|---|
| 615 | |
|---|
| 616 | if( $fermi ne "" ) { |
|---|
| 617 | print "\@ G0.S",$setnum," line linestyle 3\n"; |
|---|
| 618 | print "\@ G0.S",$setnum," line color 1\n"; |
|---|
| 619 | print "\@ G0.S",$setnum," legend \"\\f{Symbol}e\\f{}\\sF\\N\"\n"; |
|---|
| 620 | printf STDOUT "\@target G0.S%d\n",$setnum; |
|---|
| 621 | print "\@type xy\n"; |
|---|
| 622 | if( $opt_mirror ) { |
|---|
| 623 | printf STDOUT "%15.6f %15.6f\n",$fermi,-$ymax; |
|---|
| 624 | } else { |
|---|
| 625 | printf STDOUT "%15.6f %15.6f\n",$fermi,0; |
|---|
| 626 | } |
|---|
| 627 | printf STDOUT "%15.6f %15.6f\n",$fermi,$ymax; |
|---|
| 628 | print "&\n"; |
|---|
| 629 | } |
|---|
| 630 | if( $psflag == 1){ |
|---|
| 631 | print "\@hardcopy device \"PS\"\n"; |
|---|
| 632 | printf "\@print to \"%s.ps\"\n\@print\n", $plotfile; |
|---|
| 633 | } |
|---|
| 634 | if( $psflag == 2){ |
|---|
| 635 | print "\@hardcopy device \"EPS\"\n\@device \"EPS\" op \"bbox:tight\"\n"; |
|---|
| 636 | printf "\@print to \"%s.eps\"\n\@print\n", $plotfile; |
|---|
| 637 | } |
|---|
| 638 | } |
|---|
| 639 | |
|---|
| 640 | sub gnuplotout { |
|---|
| 641 | my($dos, $base, $bwidth, $plotfile, $psflag, $xlabel, $ylabel, $title, $fermi, $fexptl ) = @_; |
|---|
| 642 | my($i, $setnum); |
|---|
| 643 | my($xmax, $ymax, $n, $sign); |
|---|
| 644 | |
|---|
| 645 | $| = 1; |
|---|
| 646 | $xmax = $base+$bwidth*$#{$dos->[0]}; |
|---|
| 647 | $xmax = $fermi + 1 if ($fermi ne "" && $fermi + 1 > $xmax) ; |
|---|
| 648 | |
|---|
| 649 | if( $psflag == 1){ |
|---|
| 650 | print "set terminal postscript landscape color solid\n"; |
|---|
| 651 | printf "set output \"%s.ps\"\n", $plotfile; |
|---|
| 652 | } |
|---|
| 653 | if( $psflag == 2){ |
|---|
| 654 | print "set terminal postscript eps color solid\n"; |
|---|
| 655 | printf "set output \"%s.eps\"\n", $plotfile; |
|---|
| 656 | } |
|---|
| 657 | print "set data style lines\n"; |
|---|
| 658 | print "set termoption enhanced\n"; |
|---|
| 659 | print "set title \"",$title,"\"\n"; |
|---|
| 660 | print "set xlabel \"$xlabel\"\n"; |
|---|
| 661 | print "set ylabel \"$ylabel\"\n"; |
|---|
| 662 | print "set xrange [$base:$xmax]\n"; |
|---|
| 663 | |
|---|
| 664 | if( $#{$dos->[1]} > 0 ) { |
|---|
| 665 | print "plot '-' title '{/Symbol a}', '-' title '{/Symbol b}' lt 3" ; |
|---|
| 666 | |
|---|
| 667 | if( $opt_mirror ){ |
|---|
| 668 | print ", '-' title '' lt 1 lc 'black'"; |
|---|
| 669 | } |
|---|
| 670 | } else { |
|---|
| 671 | print "plot '-' title '$ylabel' lt 1 lc 'black'" ; |
|---|
| 672 | } |
|---|
| 673 | if( $fermi ne "" ) { |
|---|
| 674 | print ", '-' title '{/Symbol e}_{/*0.5 F}' lt 0 lc 'black'" ; |
|---|
| 675 | } |
|---|
| 676 | print "\n"; |
|---|
| 677 | # |
|---|
| 678 | # Write datasets |
|---|
| 679 | # |
|---|
| 680 | $ymax = 0; |
|---|
| 681 | foreach $n (0..$#{$dos->[0]}) { |
|---|
| 682 | printf "%15.6f %15.6f\n", $n*$bwidth+$base, ${$dos->[0]}[$n]; |
|---|
| 683 | $ymax = ${$dos->[0]}[$n] if ${$dos->[0]}[$n] > $ymax; |
|---|
| 684 | } |
|---|
| 685 | print "end\n"; |
|---|
| 686 | if( $#{$dos->[1]} > 0 ) { |
|---|
| 687 | $sign = 1; |
|---|
| 688 | $sign = -1.0 if( $opt_mirror ); |
|---|
| 689 | |
|---|
| 690 | foreach $n (0..$#{$dos->[1]}) { |
|---|
| 691 | printf "%15.6f %15.6f\n", $n*$bwidth+$base, $sign*${$dos->[1]}[$n]; |
|---|
| 692 | $ymax = ${$dos->[1]}[$n] if ${$dos->[1]}[$n] > $ymax; |
|---|
| 693 | } |
|---|
| 694 | print "end\n"; |
|---|
| 695 | } |
|---|
| 696 | # |
|---|
| 697 | # Data for fermi level indicator |
|---|
| 698 | # |
|---|
| 699 | if( $fermi ne "" ) { |
|---|
| 700 | if( $opt_mirror ) { |
|---|
| 701 | printf "%15.6f %15.6f\n",$base, 0; |
|---|
| 702 | printf "%15.6f %15.6f\n",$xmax, 0; |
|---|
| 703 | print "end\n"; |
|---|
| 704 | |
|---|
| 705 | printf "%15.6f %15.6f\n",$fermi,-$ymax; |
|---|
| 706 | } else { |
|---|
| 707 | printf "%15.6f %15.6f\n",$fermi,0; |
|---|
| 708 | } |
|---|
| 709 | printf "%15.6f %15.6f\n",$fermi,$ymax; |
|---|
| 710 | } |
|---|
| 711 | print "end\n"; |
|---|
| 712 | |
|---|
| 713 | print "\npause -1\n"; |
|---|
| 714 | |
|---|
| 715 | } |
|---|
| 716 | |
|---|
| 717 | |
|---|
| 718 | sub write_data { |
|---|
| 719 | my($plotfd, $freqs, $qpts, $qflg) = @_; |
|---|
| 720 | my($n,$q,$freqk); |
|---|
| 721 | $n = 0; |
|---|
| 722 | for $q (0 .. $#$freqs) { |
|---|
| 723 | if( $qflg ) { |
|---|
| 724 | printf $plotfd "%8d %8.4f %8.4f %8.4f ",$q,$$qpts[$q][0],$$qpts[$q][1],$$qpts[$q][2]; |
|---|
| 725 | } else { |
|---|
| 726 | printf $plotfd "%5d",$n++; |
|---|
| 727 | } |
|---|
| 728 | |
|---|
| 729 | for $freqk (@{$$freqs[$q]}) { |
|---|
| 730 | printf $plotfd " %12.6f", $freqk; |
|---|
| 731 | } |
|---|
| 732 | printf $plotfd "\n"; |
|---|
| 733 | } |
|---|
| 734 | } |
|---|
| 735 | |
|---|
| 736 | #sub dot_product { |
|---|
| 737 | # my ($a, $b) = @_; |
|---|
| 738 | # |
|---|
| 739 | # ${$a}[0]*${$b}[0]+${$a}[1]*${$b}[1]+${$a}[2]*${$b}[2]; |
|---|
| 740 | #} |
|---|
| 741 | |
|---|
| 742 | sub dot_product { |
|---|
| 743 | my ($a, $b) = @_; |
|---|
| 744 | my ($i,$n,$sum); |
|---|
| 745 | |
|---|
| 746 | $n = $#{$a}; |
|---|
| 747 | for $i (0..$n) { |
|---|
| 748 | $sum += ${$a}[$i]*${$b}[$i]; |
|---|
| 749 | } |
|---|
| 750 | $sum; |
|---|
| 751 | } |
|---|
| 752 | |
|---|
| 753 | |
|---|
| 754 | sub read_exptl { |
|---|
| 755 | my ($file) = @_; |
|---|
| 756 | my (@expdata, @thisline, @qpoint, @dataset); |
|---|
| 757 | my ($f, $nsets); |
|---|
| 758 | |
|---|
| 759 | open EXPT, "<$file" or die "Failed to open experimental data file $file"; |
|---|
| 760 | |
|---|
| 761 | $nsets = 0; |
|---|
| 762 | $expdata[0] = [0,0,0,0]; |
|---|
| 763 | while (<EXPT>) { |
|---|
| 764 | @thisline = split; |
|---|
| 765 | if( $#thisline < 0 ) { |
|---|
| 766 | $nsets++; |
|---|
| 767 | @dataset = (); |
|---|
| 768 | } elsif( $#thisline < 3 ) { |
|---|
| 769 | die "Need at least 4 items on line (qx,qy,qz,f)\n@thisline"; |
|---|
| 770 | } |
|---|
| 771 | @qpoint = splice @thisline,0, 3; |
|---|
| 772 | while ( $f = shift @thisline) { |
|---|
| 773 | unshift @dataset, [@qpoint, $f] if ($f =~ /$number/); |
|---|
| 774 | } |
|---|
| 775 | $expdata[$nsets] = [@dataset]; |
|---|
| 776 | } |
|---|
| 777 | close EXPT; |
|---|
| 778 | [@expdata]; |
|---|
| 779 | } |
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| 780 | |
|---|
| 781 | sub compute_zpe { |
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| 782 | my ($freqs, $weights) = @_; |
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| 783 | my ($nq, $mode); |
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| 784 | my $zpe = 0.0; |
|---|
| 785 | my $cm_to_eV = 1.239842e-4; |
|---|
| 786 | |
|---|
| 787 | for $nq (0..$#{$freqs}) { |
|---|
| 788 | # printf STDERR "Q-pt %d weight %f\n",$nq+1,$$weights[$nq]; |
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| 789 | for $mode (0..$#{$$freqs[$nq]}) { |
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| 790 | $freq = ${$freqs}[$nq]->[$mode]; |
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| 791 | # printf STDERR "Mode %d freq %f\n",$mode+1,$freq; |
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| 792 | $zpe += $freq*$$weights[$nq]; |
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| 793 | } |
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| 794 | } |
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| 795 | |
|---|
| 796 | $zpe *= 0.5*$cm_to_eV; |
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| 797 | $zpe; |
|---|
| 798 | } |
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| 799 | |
|---|
| 800 | sub compute_dos { |
|---|
| 801 | my ($freqs, $weights, $dos, $bwidth, $gwidth, $baseptr, $intensities) = @_; |
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| 802 | |
|---|
| 803 | my ($nq, $q, $mode, $freq, $bin, $base, $g,$h, $ngauss, $nlorentz, $intensity,$gammaby2,$sigma); |
|---|
| 804 | my (@hist); |
|---|
| 805 | |
|---|
| 806 | if ( $$baseptr > 1.0e20 ) { |
|---|
| 807 | $base = $$baseptr; |
|---|
| 808 | |
|---|
| 809 | for $nq (0..$#{$freqs}) { |
|---|
| 810 | for $mode (0..$#{$$freqs[$nq]}) { |
|---|
| 811 | $freq = ${$freqs}[$nq][$mode]; |
|---|
| 812 | $base = $freq if $freq < $base; |
|---|
| 813 | } |
|---|
| 814 | } |
|---|
| 815 | $$baseptr = $base; |
|---|
| 816 | } else { |
|---|
| 817 | $base = $$baseptr; |
|---|
| 818 | } |
|---|
| 819 | |
|---|
| 820 | for $nq (0..$#{$freqs}) { |
|---|
| 821 | for $mode (0..$#{$$freqs[$nq]}) { |
|---|
| 822 | $freq = ${$freqs}[$nq]->[$mode]; |
|---|
| 823 | $bin = ($freq-$base)/$bwidth; |
|---|
| 824 | $intensity = 1.0; |
|---|
| 825 | $intensity = 0.0 if abs($freq) < $fzerotol; |
|---|
| 826 | $intensity = ${$intensities}[$nq]->[$mode] if ref $intensities ne ""; |
|---|
| 827 | $hist[$bin] += $$weights[$nq]*$intensity; |
|---|
| 828 | } |
|---|
| 829 | } |
|---|
| 830 | |
|---|
| 831 | $ngauss = 3.0*$gwidth/$bwidth; # 3 sd should do |
|---|
| 832 | $nlorentz = 25.0*$gwidth/$bwidth; # 5 widths? |
|---|
| 833 | |
|---|
| 834 | $gammaby2 = $gwidth/2; |
|---|
| 835 | $sigma = $gwidth/2.354; |
|---|
| 836 | |
|---|
| 837 | for $h (0..$#hist) { |
|---|
| 838 | if( $lorentzian ) { |
|---|
| 839 | for $g (-$nlorentz..$nlorentz) { |
|---|
| 840 | $$dos[$h+$g] += $hist[$h]*$gammaby2/($g**2+$gammaby2**2)/$pi if ($h+$g >= 0); |
|---|
| 841 | } |
|---|
| 842 | } else { |
|---|
| 843 | for $g (-$ngauss..$ngauss) { |
|---|
| 844 | $$dos[$h+$g] += $hist[$h]*exp( - ($g*$bwidth)**2/(2*$sigma**2))/ (sqrt(2*$pi)*$sigma) if ($h+$g >= 0); |
|---|
| 845 | } |
|---|
| 846 | } |
|---|
| 847 | } |
|---|
| 848 | |
|---|
| 849 | if ( $verbose ) { |
|---|
| 850 | for $b (0..$#$dos) { |
|---|
| 851 | printf "%d %4d %12.4f\n", $b, $hist[$b], $$dos[$b]; |
|---|
| 852 | } |
|---|
| 853 | } |
|---|
| 854 | } |
|---|
| 855 | |
|---|
| 856 | sub compute_raman { |
|---|
| 857 | my ($freqs, $weights, $dos, $bwidth, $gwidth, $baseptr, $intensities) = @_; |
|---|
| 858 | |
|---|
| 859 | my $c = 299792458; |
|---|
| 860 | my $laser_wavelength = 514.5e-9; # Ar at 514.5 nm |
|---|
| 861 | my $planck = 6.6260755e-34; |
|---|
| 862 | my $cm1k = 1.438769; # cm(-1) => K conversion |
|---|
| 863 | my ($n,$freq,$mode, $factor, $bose_occ, $cross_section, @cross_secs); |
|---|
| 864 | |
|---|
| 865 | $factor = pow(2*$pi/$laser_wavelength,4)*$planck/(8*$pi**2*45)*1e12; |
|---|
| 866 | |
|---|
| 867 | # print STDERR "MULT=$factor\n"; |
|---|
| 868 | |
|---|
| 869 | @cross_secs = (); |
|---|
| 870 | $n=$#{$$freqs[0]}; |
|---|
| 871 | for $mode (0..$n) { |
|---|
| 872 | $freq = ${$freqs}[0][$mode]; |
|---|
| 873 | $bose_occ = 1.0/(exp($cm1k*$freq/$temperature)-1); |
|---|
| 874 | if( $freq > $fzerotol ){ |
|---|
| 875 | $cross_section = $factor/$freq * (1 + $bose_occ)*$$intensities[0][$mode]; |
|---|
| 876 | } else { |
|---|
| 877 | $cross_section = 0; |
|---|
| 878 | } |
|---|
| 879 | push @cross_secs, $cross_section; |
|---|
| 880 | # print STDERR "f=$freq; occ=$bose_occ; act=$$intensities[0][$mode]; ds/dO= $cross_section\n"; |
|---|
| 881 | } |
|---|
| 882 | compute_dos($freqs, $weights, $dos, $bwidth, $gwidth, $baseptr, [[@cross_secs]]); |
|---|
| 883 | |
|---|
| 884 | } |
|---|