We report the results of an investigation of the interaction of low energy oxygen ions with pyrolytic graphite and Kapton surfaces. CO molecules emitted from the surface as a result of the ion bombardment were detected by a mass spectrometer. Because the ion‐induced signals were small compared to that arising from the CO background pressure in our vacuum system, the ion beam was modulated and the modulated component of the CO signal measured with a lock‐in amplifier. The quantum yield (CO molecules emitted per incident oxygen ion) for graphite rose from 1.9 at 4.5 eV ion energy to 6.6 at 465 eV. Comparable yields were obtained for Kapton. The large size of our yields suggests contributions to the reaction process from the background O2 molecules in our vacuum system.
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Research Article|
May 01 1986
Carbon monoxide production in low energy oxygen ion bombardment of pyrolytic graphite and Kapton surfaces
C. C. Horton;
C. C. Horton
Department of Physics, Case Western Reserve University, Cleveland, Ohio 44106
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T. G. Eck;
T. G. Eck
Department of Physics, Case Western Reserve University, Cleveland, Ohio 44106
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R. W. Hoffman
R. W. Hoffman
Department of Physics, Case Western Reserve University, Cleveland, Ohio 44106
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J. Vac. Sci. Technol. A 4, 1236–1239 (1986)
Article history
Received:
September 23 1985
Accepted:
November 22 1985
Citation
C. C. Horton, T. G. Eck, R. W. Hoffman; Carbon monoxide production in low energy oxygen ion bombardment of pyrolytic graphite and Kapton surfaces. J. Vac. Sci. Technol. A 1 May 1986; 4 (3): 1236–1239. https://doi.org/10.1116/1.573405
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