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Spectral Observation of Defects in Space Using Polymer Chain Irradiated by Oxygen Ion Beam

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Abstract:

We discuss some effects of oxygen ions on a polymer, on the basis of spectroscopic data analysis related to the study of the effect of the space medium in the lower earth orbit (LEO). Oxygen and UV light have an influence upon the surface of spacecraft in LEO. The light transmittance of polymers decreases with time during oxygen ion beam irradiation. The signals of CO2 and C=O in the ATR spectra indicate that the surface of the polymer is oxidized and the chain of the polyimide partially cut. When the oxygen ion beam hits the aluminum coated on the polymer, the mass loss of aluminum can be clearly detected by measuring the change of the transmittance.

Keywords: ATR spectra; Irradiation of oxygen ion; Mass loss; Polymer; Space medium; Transmittance

Document Type: Research Article

DOI: http://dx.doi.org/10.1366/0003702944027697

Affiliations: 1: Faculty of General Education, Department of Physics, Ehime University, Bunkyo-cho 3, Matsuyama, Ehime 790, Japan 2: The Institute of Space and Astronautical Science, Sagamihara-shi, Yoshinodai 3-1-1, Kanagawa 229, Japan 3: Faculty of Engineering, Tokyo Metropolitan University, Hachioji-shi, Minami-Osawa 1-1, Tokyo 192-03, Japan 4: Department of Communications and Systems, The University of Electro-Communications, Chofu-shi, Chofugaoka 1-5-1, Tokyo 182, Japan

Publication date: January 1, 1994

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