Models of the ejecta indicate that metals are highly ionized due to radioactive decay of 56Co, but charge transfer with H tends to keep them singly ionized. Charge transfer is also important in chemical models which attempt to reproduce observed molecular abundances. Fusion plasma impurity diagnostics which use neutral beam injection techniques require state-dependent charge transfer cross sections to extract impurity densities. Charge transfer and charge transfer isotope effects may also be important in the edge region of tokamak devices. Only semiclassical Landau-Zener calculations, which are of limited quality, are available for the majority of collision systems of interest.
Manuscripts are currently in preparation.
The calculations were used to model the expansion of the early universe and abundances of these molecules during the postrecombination epoch. We are also investigating the effect of the cosmic background radiation field on molecule formation through stimulated radiative association. The results will be useful for modeling the silicon chemistry of interstellar clouds. Photodissociation of neutral hydrides may provide an opacity source for missing flux in the blue region of cool giant stars. The former may be important for atmospheric modeling while the latter are of interest to studies of cyrogenic masers and Bose-Einstein Condensation in dilute atomic gases.