Spectral Absorption of Excited Molecules in Iron Aerosols

Details Spectral Absorption of Excited Molecules in Iron Aerosols Spectral Absorption of Excited Molecules in Iron Aerosols

Mar 1968

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1968natur.217..934j&link_type=abstract

Nature, Volume 217, Issue 5132, pp. 934-935 (1968).

Computer Science

Scientific paper

THE existence of interstellar absorption bands of unknown origin has drawn our attention to absorption by finely dispersed aerosols of solids. We have in particular investigated iron aerosols obtained by thermal decomposition of Fe(CO)5 at concentrations of less than ten parts per million in various carrier gases. The iron particles resulting from this treatment were between 30 and 200 Å in size. These yield an absorption curve which, between 3500 and 6000 Å, agrees well with the theory developed by Mie if the optical constants of bulk iron and the real size of the particles were taken into account. With a particular size distribution of the particles the absorption was found to be inversely proportional to the wavelength, as observed in interstellar absorption.

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