Ion produced Hydrogenated Amorphous Carbon by irradiation of frozen benzene

1 September 1991

journal article
research article
Published by Taylor & Francis in Radiation Effects and Defects in Solids

Vol. 117 (4) , 299-305
https://doi.org/10.1080/10420159108220747

Abstract

KeV ion irradiation of frozen benzene layers (∼ 1 μm thick) gives rise to carbonaceous materials. The evolution of atomic structure of benzene leading to the arrangement of graphitic cluster inside the so called “Ion Produced Hydrogenated Amorphous Carbon” films (IPHAC) is discussed. UV-visible, infrared spectroscopy and Elastic Recoil Detection Analysis (ERDA) are used to distinguish the aliphatic and aromatic contribution in the amorphous structure. Application of these results to astrophysics lies in the possibility to explain the observed extended red emission and near-infrared continuum emission in several astronomical objects. Ion irradiation appears also to be able in producing, starting from simple hydrocarbon, compact polycyclic aromatic hydrocarbon molecules presently believed to be abundant constituents in our as well as in other Galaxies.

Keywords

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