Dorschner et al. (1995) paper's page
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)
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
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
Refractive index vs wavelength (0.20 - 500 micron) is given with the step of
about 10% in lambda (within the bands about 2%).
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Last modified: 11/10/98, V.I.