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Infrared spectral behavior of fine particulate solids

Journal of Physical Chemistry

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DOI: 10.1021/j100552a015

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Abstract

Transmission and emission spectra of clouds and layers of fine particulate samples of quartz, magnesium oxide, and aluminum oxide in the 6.5-35-??m wavelength range are presented. They demonstrate that the behavior of layers of particles constitutes a good analogue for a cloud of particles; that individual micrometer-sized particles emit most where they absorb most; that as the size of the particle is increased, the emission features reverse polarity and the spectrum approaches that of one obtained from a polished plate; and that as the particle layer-thickness increases, radiative interaction becomes increasingly important so that the emission maximum shifts from the strongest to weaker features, or produces a maximum at the Christiansen wavelength.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Infrared spectral behavior of fine particulate solids
Series title:
Journal of Physical Chemistry
DOI:
10.1021/j100552a015
Volume
80
Issue:
11
Year Published:
1976
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
First page:
1195
Last page:
1198
Number of Pages:
4