The potential-energy curves of the low-lying 2SIGMA+ and 2PI states of
the cation NHe2+ are calculated and it is shown that the lowest state
of each symmetry has a potential well inside a repulsive Coulomb barr
ier that contains several long-lived vibrational levels. Estimates are
made of the cross sections of the charge-transfer processes N2+ + He-
->N+ + He+ which occur through transitions at avoided crossings of the
molecular states.