D. Proulx et al., MULTIPHOTON DETACHMENT, IONIZATION, AND SIMULTANEOUS EXCITATION OF 2-ELECTRON SYSTEMS, Physical review. A, 49(2), 1994, pp. 1208-1213
We present results of calculations of perturbative rates for two- and
three-photon detachment and ionization of H- and He, and for simultane
ous excitation of H-, by linearly polarized light over a range of freq
uencies extending into the ''excess-photon detachment and ionization''
region, a region replete with resonances. Simultaneous excitation of
H is more probable than not in the case of two-photon detachment of H-
.