Astronomy and Astrophysics – Astrophysics
Scientific paper
May 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988infph..28..183s&link_type=abstract
Infrared Physics (ISSN 0020-0891), vol. 28, May 1988, p. 183-188.
Astronomy and Astrophysics
Astrophysics
5
Infrared Spectroscopy, Interstellar Matter, Ion Irradiation, Molecular Structure, Organic Materials, Amorphous Materials, Astrophysics
Scientific paper
Infrared spectra of organic molecules, including frozen gases, aliphatic and aromatic polymers, complex molecules, and biological compounds are presented, and their changes due to fast ion bombardment are described. It is found that (1) the targets lose hydrogen preferentially and the stoichiometric H/C decreases; (2) the materials become more absorbing and their color changes from white to black as the ion dose increases; (3) the crystallinity, if present initially, is destroyed, and bombarded material is amorphous although microcrystallinity cannot be ruled out; (4) the skeletal vibrations are changed, indicating the occurrence of cross-lining and the formation of tridimensional networks. The astrophysical and space mission implications of these findings are addressed.
Calcagno L.
Foti A. M.
Massimino P.
Spinella Francesco
Strazzulla Giovanni
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