Atom–surface interaction potential for 4He–NaCl(001) system: a modified pairwise close-coupling calculation

In the framework of the microscopic pairwise theory, a new process of parameter selection for the atom–surface interaction potential of 4He–NaCl(001) system is proposed. The resulting interaction potential shows a strong theoretical support to the recent experimental evidence for a deep bound-state level at −7.07 meV [Benedek et al., Surf. Sci. 381 (1997) L540].