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Дата изменения: Fri Nov 19 13:08:39 2010
Дата индексирования: Mon Oct 1 22:23:38 2012
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Поисковые слова: asteroid
Jaeger et al. (1994) paper's page
Source: Jäger C., Mutschke H., Begemann B., Dorschner J., and Henning Th. (1994) Steps toward interstellar silicate mineralogy.
I. Laboratory results of a silicate glass of mean cosmic composition.
Astron. Astrophys., v. 292, pp. 641 - 655.
Some details:
Several samples of pyroxenes were prepared by quenching melts.
In the samples Mg, Fe, Al, Ca were placed in the proportions
that approximately agreed with the photospheric abundances of the Sun
and cometary abundances.
Deternimation of the optical constants was made as follows:
(i) reflectance of the polished samples was measured in the range
1 - 500 micron and the refractive index in the infrared region
was estimated by mean of Kramers-Kronig analysis;
(ii) in the region 0.25 - 0.9 micron the real
part of the refractive index was obtained from spectroscopic ellipsometry;
(iii) transmittance of a self-supporting splat
was measured in the range 0.4 - 8 micron.
