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Start Over Author "Richards PL" Publisher american physical society (aps)
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1. Heat capacity and sticking probability measurements ofHe4submonolayers adsorbed on evaporated Ag films: Bose statistics in two dimensions

Author

Richards Pl and Kenny Tw

Subjects
Materials science, Helium-4, Condensed matter physics, Bose gas, Monolayer, General Physics and Astronomy, Substrate (electronics), Sticking probability, Thin film, Isotopes of helium, Molecular physics, Heat capacity
Abstract

We have measured the heat capacity of submonolayers of {sup 4}He adsorbed on Ag films between 1.7 and 3.3 K. Good fits to the results are obtained with a model of a noninteracting two-dimensional Bose gas. The sticking probability for room-temperature {sup 4}He atoms on cold Ag has been measured as a function of substrate temperature and {sup 4}He coverage. The sticking probability is 4% at low coverage, and abruptly drops to 1% for coverages above 0.5 monolayer.

Published
1990
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