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Dorschner et al. (1995) paper's page
Source:
Dorschner J., Begemann B., Henning Th. et al. (1995) Steps toward interstellar silicate mineralogy.
II. Study of Mg-Fe-silicate glasses of variable composition.
Astron. Astrophys., v. 300, pp. 503 - 519.
(click on the authors' names for an ADS abstract of the paper)
Some details:
Samples were prepared by quenching melts. Quenching was rapid
to freeze the amorphous state of the melts. This state
was confirmed by X-ray diffraction measurements of powders and
bulk sample material. The homogeneity of the glass samples was controlled
by electron microscopy. The actual composition was determined by wet-chemical
methods.
Deternimation of optical constants was made in two ways:
(i) measurements of
reflectance of the polished samples (0.19 - 500 micron) with following
Kramers-Kronig analysis in 8 - 80 micron region and
Lorentz oscillator fit outside the region;
(ii) measurements of
transmittance of the "raw" samples (with accounting for the reflected
and scattered light contribution) in visual (<8 micron) and far infrared
(>100 micron).
Refractive index vs wavelength (0.20 - 500 micron) is given with the step of
about 10% in lambda (within the bands about 2%).
Related paper(s):
Jaeger C., Mutschke H., Begemann B. et al. (1994) Steps toward interstellar silicate mineralogy.
I. Laboratory results of a silicate glass of mean cosmic composition.
Astron. Astrophys., v. 292, pp. 641 - 655.
