Laboratory study of the IR spectrum of ion-irradiated frozen benzene

Details Laboratory study of the IR spectrum of ion-irradiated frozen benzene Laboratory study of the IR spectrum of ion-irradiated frozen benzene

Jan 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991a%26a...241..310s&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 241, no. 1, Jan. 1991, p. 310-316. Research supported by ASI.

Astronomy and Astrophysics

Astrophysics

36

Benzene, Infrared Spectra, Interstellar Matter, Spectrum Analysis, Amorphous Materials, Cyclic Hydrocarbons, Reaction Kinetics

Scientific paper

A study is presented of the evolution of the IR spectrum of frozen benzene before, during, and after irradiation with 3keV He ion beams. It is shown that the formation of both more and less volatile species occurs regardless of the purity of the bombarded PAH. The bombarded species can be linked to form a different aromatic mixture. The relative amount of aromatic bonding with respect to linear chains is found to be a decreasing function of the deposited energy. Dehydrogenation takes place and the evolution of the ion produced hydrogenated amorphous carbon is shown to be a function of the ion dose. The results are thought to be noteworthy in astrophysics studies in view of the possible widespread presence of PAHs and their compounds in the Milky Way and other galaxies.

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