He4 interaction with and scattering from graphite

N. García, William E. Carlos, Milton W. Cole, V. Celli

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Abstract

Calculations are presented of diffraction intensities for the scattering of He4 from graphite basal plane. The potential employed is a corrugated hard wall plus attraction. The choice of parameters is made by modeling a more realistic potential derived by pairwise summation of He-C interactions. These pair interactions are taken to be of either Yukawa-6 or Lennard-Jones 6-12 form, with coefficients derived by comparison with experimental data of Boato et al. (differing in value from those used traditionally). The computed linewidths, positions, and splittings are in good overall agreement with the scattering results. The role of inelastic effects is explored using a complex potential with a constant imaginary part for small atom-surface separation.

Original languageEnglish (US)
Pages (from-to)1636-1646
Number of pages11
JournalPhysical Review B
Volume21
Issue number4
DOIs
StatePublished - 1980

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics

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    García, N., Carlos, W. E., Cole, M. W., & Celli, V. (1980). He4 interaction with and scattering from graphite. Physical Review B, 21(4), 1636-1646. https://doi.org/10.1103/PhysRevB.21.1636