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Applied Optics

Applied Optics


  • Vol. 10, Iss. 1 — Jan. 1, 1971
  • pp: 51–57

Spectral Absorption Characteristics of the Major Components of Dust Clouds

D. F. Flanigan and H. P. DeLong  »View Author Affiliations

Applied Optics, Vol. 10, Issue 1, pp. 51-57 (1971)

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It is well known that dust clouds selectively absorb radiation in the 700–1300 cm−1 atmospheric window region. Studies have shown that dust clouds are composed of the same minerals as surface soils, although in different proportion. We have examined seventy soil samples from a number of locations around the world to determine their compositions and spectral characteristics. The results indicate that there are five major components which selectively absorb radiation in the 700–1300 cm−1 region. These are three clay minerals, silica, and calcium carbonate. Absorptivity coefficient spectra of representative soil samples are given.

© 1971 Optical Society of America

Original Manuscript: April 30, 1970
Published: January 1, 1971

D. F. Flanigan and H. P. DeLong, "Spectral Absorption Characteristics of the Major Components of Dust Clouds," Appl. Opt. 10, 51-57 (1971)

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