Longrange interactions of metastable helium atoms
Abstract
The electric dipole, quadrupole, and octupole polarizabilities of a helium atom and the associated dispersion coefficients for the interaction of two helium atoms are calculated for the atomic n=2 singlet and triplet states, respectively, He(2 ^{1}S) and He(2 ^{3}S). The calculations utilize highly accurate, variationally determined, wave functions composed of doubled basis sets. The effects of retardation due to the finite speed of light are calculated for the dispersion potentials of two He(2 ^{1}S) or two He(2 ^{3}S) atoms and for the atomsurface interaction potentials of a He(2 ^{1}S) or a He(2 ^{3}S) atom with a perfectly conducting or a dielectric wall.
 Publication:

Physical Review A
 Pub Date:
 August 1998
 DOI:
 10.1103/PhysRevA.58.1247
 arXiv:
 arXiv:physics/9802054
 Bibcode:
 1998PhRvA..58.1247Y
 Keywords:

 34.20.Cf;
 32.10.Dk;
 34.50.Dy;
 Interatomic potentials and forces;
 Electric and magnetic moments polarizability;
 Interactions of atoms and molecules with surfaces;
 photon and electron emission;
 neutralization of ions;
 Atomic Physics;
 Chemical Physics
 EPrint:
 RevTeX, epsf, 4 figs