Recent scattering data are employed to study the interaction V(r→) between a He atom and a graphite surface. Assuming V(r→) can be written as a sum of He-C interactions U(r→-R→i), it is found that none of a variety of central potentials U(|r→-R→i|) considered is consistent with the data. In contrast, an anisotropic pair potential agrees with scattering and thermodynamic data, and with estimates derived from the electronic properties of graphite.
All Science Journal Classification (ASJC) codes
- General Physics and Astronomy