NON-FRANCK-CONDON ELECTRON-IMPACT DISSOCIATIVE-EXCITATION CROSS-SECTIONS OF MOLECULAR-HYDROGEN PRODUCING H(1S)-1-SIGMA(+)(G)(UPSILON=0)-](B-1-SIGMA(+)(U), B'(1)SIGMA(+)(U), C-1-PI(U))(H(2L) THROUGH X)

Dissociation cross sections of H-2 for high-energy electron impact (10 0-1000 eV) producing H(1s), H(2s), and H(2p) for excitation from the g round vibrational stare (v=0) to the continuum of the B (1) Sigma(u)(), B' (1) Sigma(u)(+), and C (1) Pi(u) states were computed in the fir st Born approximation. Configuration-interaction electronic wave funct ions were used and vibrational degrees of freedom tak:en in account. T he dissociative excitation cross sections as a function of the continu um energy for each final state were presented, and the accuracy of the wave function, including the importance of relaxation effects and the validity of the Franck-Condon approximation, is analyzed in compariso n to available previous theoretical results. The computed dissociation cross sections were compared to experimental results making use of th e separation of the various breakup channels proposed by Ajello, Shema nsky, and James [Astrophys. J. 371, 422 (1991)]. The obtained cross se ctions to produce H(2p)+H(1s) fragments via dissociative excitation to the B and C states have agreed well with the decomposed experimental results within the error bars. The dissociation cross sections to prod uce H(2s)+H(1s) through the B' state were in most cases somewhat large r than the reported experimental error bars. In the most favorable cas e our theoretical B' dissociation cross section was 3.1% within the re ported error bar at 300 eV electron impact energy. A possible experime ntal reason for this discrepancy was raised. [S1050-2947(98)01502-9].