Near-threshold electron impact dissociation of H2 within the adiabatic nuclei approximation

Details Near-threshold electron impact dissociation of H2 within the adiabatic nuclei approximation Near-threshold electron impact dissociation of H2 within the adiabatic nuclei approximation

Dec 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998njph....1....2s&link_type=abstract

New Journal of Physics, Volume 1, Issue 1, pp. 2 (1998).

Physics

8

Scientific paper

At low energies, the major pathway for the electron-impact dissociation of H2(e + H (2 to) H(1s) + H(1s) + e) is through excitation to the dissociative state. We present ab initio calculations of the rate of dissociation as a function of initial vibrational level. The calculations employ an extension to the adiabatic nuclei approximation, balancing the energy between the electrons and the nuclei, for excitation to a dissociation continuum. We find that near-threshold rates show so strong a dependence on the initial H2 vibrational level that the common practice of approximating the total dissociation rate to the v = 0 rate is invalid in many situations.

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