The angle-resolved thermal desorption flux, and time-of-flight spectrum have been computed for Ne-Cu( 111) using a microscopic description of the phonons of Cu( 1 I 1 ), and a realistic gas-solid potential. The angular distribution is narrower than cosine at 5 K, quasi-cosine at 10 K, and distinctly non-cosine at 20 and 30 K with the maximum away from the surface normal. The desorption is driven by long-wavelength phonons, but the precise angular dependence results from the temperature-dependent interplay of statistical and dynamical factors. He desorbing from graphite shows similar features.

Angle-Resolved Thermal Desorption and Time-of-flight spectra:Ne-Cu(111) / Bortolani, Virginio; Brivio, G. P.; Franchini, Anna; Grimley, T. B.; Santoro, Giorgio. - In: CHEMICAL PHYSICS LETTERS. - ISSN 0009-2614. - STAMPA. - 170:(1990), pp. 1-4. [10.1016/0009-2614(90)87079-7]

Angle-Resolved Thermal Desorption and Time-of-flight spectra:Ne-Cu(111)

BORTOLANI, Virginio;FRANCHINI, Anna;SANTORO, Giorgio
1990

Abstract

The angle-resolved thermal desorption flux, and time-of-flight spectrum have been computed for Ne-Cu( 111) using a microscopic description of the phonons of Cu( 1 I 1 ), and a realistic gas-solid potential. The angular distribution is narrower than cosine at 5 K, quasi-cosine at 10 K, and distinctly non-cosine at 20 and 30 K with the maximum away from the surface normal. The desorption is driven by long-wavelength phonons, but the precise angular dependence results from the temperature-dependent interplay of statistical and dynamical factors. He desorbing from graphite shows similar features.
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Angle-Resolved Thermal Desorption and Time-of-flight spectra:Ne-Cu(111) / Bortolani, Virginio; Brivio, G. P.; Franchini, Anna; Grimley, T. B.; Santoro, Giorgio. - In: CHEMICAL PHYSICS LETTERS. - ISSN 0009-2614. - STAMPA. - 170:(1990), pp. 1-4. [10.1016/0009-2614(90)87079-7]
Bortolani, Virginio; Brivio, G. P.; Franchini, Anna; Grimley, T. B.; Santoro, Giorgio
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11380/452134
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