Abstract
The absorption coefficient of dusty plasma is deduced on the basis of considering the influence of dust particles electric potential, and its absorption characteristic in the near infrared region is discussed. The involved results manifest that the absorption coefficient of dusty plasma with the dust particles potential is considered is obviously bigger than that of not considered in the given temperature, pressure and frequency ranges, which proves the influence of dust particles potential can not be omitted. Besides, the results also indicate that the maximal absorption ability of the dusty plasma does not occur where the maximal electron number density (plasma resonance frequency) appears. Consequently, two conditions, which determine where the maximal absorption appears, are presented by a series of theoretical deduction.
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