Effective reduced mass calculated in a non-minimal basis set within a non-adiabatic formulation of the ground state hydrogen atoms interaction problem

摘要

The variation with the internuclear distance R of the effective reduced mass for the relative motion of two ground state hydrogen atoms is determined in the general frame of the resonating group method (RGM) using a larger basis set than in our previous work. Stabilised values with respect to the basis length are displayed for R >= 3.6 a_0 for X~1#SIGMA#_g~+ state and for R >= 4.5 a_0 for the a X~3#SIGMA#_u~+ state i.e. in the range of R accessible in the collisions of cold hydrogen atoms.