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

Sinvani, M. and Goodstein, D. L. and Cole, M. W. (1984) Scattering of low-energy helium atoms from a low-temperature solid surface. Physical Review B, 29 (7). pp. 3905-3907. ISSN 1098-0121.

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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.

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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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Office of Naval Research (ONR)N0014-80-C-0447
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ID Code:32236
Deposited By: Aucoeur Ngo
Deposited On:02 Jul 2012 21:03
Last Modified:26 Dec 2012 15:27

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