% ***********************************************************************
% basalt_k.m
% ***********************************************************************
%
% Data description:
% refractive index (imaginary part) of limonite (185-2600nm), 
% Chimney Rock, New Jersey Sample
%
% Prepared by: Gladimir V. G. Baranoski on October 2013
%
% ***********************************************************************
%
% Original data source:
% 
% Chapter V: Optical Complex Index of Refraction Between
% 0.185 and 2.5 um, Table V-16, page 107
% in
%
% Egan, W.G. and Hilgeman, T.W., "Optical Properties of Inhomogeneous
% Materials:  Applications to Geology, Astronomy, Chemistry, and
% Engineering", Academic Press, 1979
%
% ***********************************************************************
clear all;

wave = [185, 190, 200, 210, 220, 233, 260, 280, 300, 325, 355, 370, ...
    400, 433, 466, 500, 533, 566, 600, 633, 666, 700, 817, 907, ...
    1000, 1105, 1200, 1300, 1400, 1500, 1600, 1700, 1800, 1900, ...
    2000, 2100, 2200, 2300, 2400, 2500];


data = 10 .^ [...
    -2.65, -2.58, -2.50, -2.55, -2.56, -2.49, -2.57, -2.51, -2.57, ...
    -2.59, -2.62, -2.67, -2.65, -2.69, -2.70, -2.71, -2.75, -2.77, ...
    -2.76, -2.77, -2.77, -2.76, -2.71, -2.61, -2.52, -2.47, -2.48, ...
    -2.51, -2.46, -2.61, -2.53, -2.61, -2.46, -2.48, -2.48, -2.31, ...
    -2.16, -2.40, -2.29, -2.14];

fid = fopen('ecBas.txt', 'wb');
for i = 1:length(data)
	fprintf(fid, '%d  %3.4g \n', wave(i), data(i));
end;
fclose(fid);

plot(wave, data, 'b-', 'linewidth', 3);
axis([185 2500 0 0.01]);
set(gca, 'FontSize', 14);
grid on;
title('Basalt', 'FontSize', 14);
ylabel('extinction coefficient', 'FontSize', 14);
xlabel('wavelength (nm)', 'FontSize', 14);
set(gcf,'PaperUnits','inches','PaperPosition',[0 0 6 5]);
pause;
print('-dpng', '-r100', 'basalt_k.png');
close;

