Hostname: page-component-669899f699-b58lm Total loading time: 0 Render date: 2025-04-28T10:02:34.127Z Has data issue: false hasContentIssue false
  • English
  • Français

The Thermal Accommodation Coefficient of Graphite

Published online by Cambridge University Press:  14 August 2015

Kenrick L. Day
Kenrick L. Day*
Affiliation:
Astronomy Dept., The Ohio State University, Columbus, Ohio 43210, U.S.A.cor1corresp
∗

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

An experiment has been performed to determine the thermal accommodation coefficients for the gases hydrogen, oxygen, methane, and carbon dioxide on graphite, in the temperature range 273–77 K. The experimental results are compared to those indirectly predicted in a theoretical paper by Hollenbach and Salpeter, and agreement is found to be satisfactory. A sticking coefficient for atomic hydrogen on a graphite grain is derived which would support the conclusion that recombination of hydrogen on grain surfaces could be a significant process. The very high measured thermal accommodation coefficients for the heavier gases supports the popular assumption that retention of such gases on grain surfaces should be considered extremely likely.

Type
Part VI Physical Processes, Theory and Experiment
Information
Symposium - International Astronomical Union , Volume 52: Interstellar Dust and Related Topics , 1973 , pp. 311 - 315
Copyright
Copyright © Reidel 1973 

References

Augason, G. C.: 1970, Astrophys. J. 162, 463.Google Scholar
Field, G. B.: 1969, Monthly Notices Roy. Astron. Soc. 144, 411.CrossRefGoogle Scholar
Hollenbach, D. and Salpater, E. E.: 1970, J. Chem. Phys. 53, 79.Google Scholar
Ross, S. and Oliver, J. P.: 1964, On Physical Adsorption , Interscience Publishers, New York, p. 236.Google Scholar
Thomas, L. B.: 1967, in Saltsburg, et al. (eds.), Fundamentals of Gas-Surface Reactions , Academic Press, New York, p. 346.Google Scholar
Thomas, L. B. and Olmer, F. G.: 1943, J. Am. Chem. Soc. 65, 1036.CrossRefGoogle Scholar
Van de Hulst, H. C.: 1949, Recherches Astronomiques de l'Observatoire d'Urecht XI, Part 2, 1.Google Scholar
Wachman, H. Y.: 1962, J. Am. Rocket Soc. 32, 2.Google Scholar
Williams, D. A.: 1968, Astrophys. J. 151, 935.CrossRefGoogle Scholar