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Published April 1, 1984 | Published
Journal Article Open

Scattering of low-energy helium atoms from a low-temperature solid surface

Abstract

The first measurements are presented of the scattering of low-energy (≾2 meV) He atoms from a solid surface at low temperature (T_s=3.6K). The results are consistent with calculations which assume that all incident atoms either stick with probability α or are scattered elastically and specularly. As the mean incident angle with respect to the surface normal decreases from 45° to 14°, α increases from 0.77 to 0.94.

Additional Information

© 1984 The American Physical Society. Received 28 September 1983. We thank our colleagues G. Vidali and R. Maboudian for helpful comments, and we thank R. Movshovich for technical help. This research was supported in part by the Office of Naval Research under Contract No. N0014-80- C-0447 and by the National Science Foundation under Grants Nos. DMR81-13262 and PHY77-27084, supplemented by funds from the National Aeronautics and Space Administration.

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August 19, 2023
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