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Raman properties of various carbonaceous materials and their astrophysical implicationsIt is well known that a large number of celestial objects exhibit, in the range 3 to 12 micron, a family of emission features called unidentified infrared bands (UIR). They usually appear together and are associated with UV sources. Recently various authors have suggested that these features could be attributed to solid carbonaceous materials. Following this interest, a systematic analysis was performed of various types of amorphous carbon grains and polycyclic aromatic hydrocarbons (PAH), produced in lab. Updating results of Raman measurements performed on several carbonaceous materials, chosen according to their astrophysical interest, are presented. The measurements were made by means of a Jobin-Yvon monochromator HG2S and standard DC electronic. The line at 5145 A of an Ar+ laser was used as excitation source.
Document ID
19910005620
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Blanco, A. (Lecce Univ. (Italy). Naples (Italy)., United States)
Borghesi, A. (Lecce Univ. (Italy). ESTEC, Noordwijk (Netherlands)., United States)
Bussoletti, E. (Istituto Universitario Navale)
Colangeli, Luigi (European Space Agency. European Space Research and Technology Center)
Fonti, Sergio (Lecce Univ. (Italy).)
Lugara, M. (Bari Univ. (Italy).)
Orofino, Vincenso (Lecce Univ. (Italy).)
Scamarcio, G. (Bari Univ.)
Date Acquired
September 6, 2013
Publication Date
December 1, 1989
Publication Information
Publication: NASA, Ames Research Center, Interstellar Dust: Contributed Papers
Subject Category
Space Radiation
Accession Number
91N14933
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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