Pseudostate calculation of the Bethe logarithm for H2+

摘要

The Bethe logarithm is calculated for the hydrogen molecular ion H_2~+ in the states of the rotational quantum number L = 0 and the vibrational quantum number v = 0-1 by using the Drake-Goldman method. The precision that is achieved for these two states is a few parts in 10~9, which demonstrates the feasibility of the Drake-Goldman method for simple molecular systems. Comparison with the best published results is made.