2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/87484Polarizabilities, dispersion coefficients, and long-range atom-surface interaction potentials are calculated for the n=2 triplet and singlet states of helium using highly accurate, variationally determined, wave functions.RevTeX, epsf, 4 figsAtomic PhysicsChemical Physicstext