Jr. Mohallem, MASS SCALING IN THE MOLECULAR APPROACH - DIRECT CORRELATION AMONG VIBRATIONAL H-2(-LEVELS() AND ELECTRONIC HE ENERGY), Journal of physics. B, Atomic molecular and optical physics, 30(10), 1997, pp. 349-352
The molecular approach to ABA Coulomb systems is successfully extended
to atomic systems. Adiabatic and nonadiabatic energies of some low-ly
ing J = 0 bound states of the helium atom are calculated. These energy
levels are directly related to vibrational levels of the hydrogen mol
ecular ion in a correlation diagram, a procedure that is equivalent to
mass scaling, relative to the mass ratio lambda = m(A)/m(B), of the a
diabatic and nonadiabatic wavefunction, that has the same analytical f
orm for all lambda.