Correlation forces in rare gas crystals

The potential energy of a lattice with atoms displaced from their sites is treated. Besides the repulsion energy calculated earlier by the spatial restriction method, the van der Waals correlation energy, binding the atoms to form a crystal, is calculated. An atomic model giving quantiative agreement with a large set of experimental data is used to find the leading terms of the asymptotic expansion of the correlation energy, taking account of the many-body interaction of atoms and their multipole moments. The lattice potential energy is represented as a sum of pair energies extracted from the many-body interaction.

Hali tarjima qilinmagan