1972
DOI: 10.1088/0022-3719/5/16/011
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Atomic helium scattering and diffraction from solid surfaces

Abstract: Abstract. It is shown that whether or not diffractive scattering is observed from solid surfaces depends not only on the elastic scattering cross section, ie the normalized Debye-Waller factor, as has been recently suggested by J L Beeby but also on the surface structure or local surface potential of the particular solid.

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Cited by 25 publications
(2 citation statements)
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“…Ainsi le centre diffuseur ne sera-t-il pas un atome isole de la surface mais une cellule en comportant plusieurs, 6~pp reftetera alors les deplacements moyens de 1'ensemble de cette cellule. Cette influence d'un facteur geometrique avait deja ete signalee par Weinberg [16] pour expliquer l'absence de diffraction de 1'helium sur les metaux.…”
Section: En Utilisant Un Faisceau D'atomes Neutres Commeunclassified
“…Ainsi le centre diffuseur ne sera-t-il pas un atome isole de la surface mais une cellule en comportant plusieurs, 6~pp reftetera alors les deplacements moyens de 1'ensemble de cette cellule. Cette influence d'un facteur geometrique avait deja ete signalee par Weinberg [16] pour expliquer l'absence de diffraction de 1'helium sur les metaux.…”
Section: En Utilisant Un Faisceau D'atomes Neutres Commeunclassified
“…When calculated properly the Debye-Waller factor is small for those surfaces where diffraction is not observed but greater than 10% for those surfaces where diffraction is observed. Weinberg (1972) has recently presented more detailed calculations of the Debye-Waller factor.…”
Section: Introductionmentioning
confidence: 99%