Comprehensive optical and collision data for radiation action. I. H2

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Abstract
We apply a multistep program of Platzman to construct a complete set of inelastic cross sections for electron scattering at all incident energies. The initial step constructs a complete spectrum of optical oscillator strengths from photoabsorption and other optical data subjected to the constraint of sum rules. Measured cross sections for nonionizing collisions are then adjusted to fit Bethe’s formula. Experimental differential ionization cross sections are analyzed by a new method of Kim’s. The resulting set of all inelastic cross sections is subjected to the Inokuti−Kim−Platzman sum rule. The value of W, the mean energy per ion pair, is calculated from the adopted cross sections and compared with experiment, taking into account dissociation and recombination processes.