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On the laterally averaged interaction potential between He atoms and the (0001) surface of graphite

✍ Scribed by J.C. Ruiz; G. Scoles; H. Jonsson

Publisher
Elsevier Science
Year
1986
Tongue
English
Weight
446 KB
Volume
129
Category
Article
ISSN
0009-2614

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✦ Synopsis

Very low energy scattering of He atoms from the (0001) face of graphite has been used to determine the bound state energies of the laterally averaged He-graphite potential These results disagree with the existing literature, but agree with new measurements by Chung, Kara and FrankI. Their implications with respect to both the need for three-body terms in the interaction of an atom with a physisorbed overlayer, and the value of the long-range He-graphite Cs coefficient, are discussed.

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## Abstract Un examen critique des données expérimentales relatives à I'énergie différentielle d'interaction (Δ__q__) à I'énergie intégrale d'interaction (ΔQ) et au potentiel de surface (ν) de quelques films d'hydrogène, conduit à trois relations empiriques entre ces grandeurs: Δ__q__=__e__ν (__a_