抄録
Vibrational transition processes of H2 molecule in the electronic ground state by H atom impact are investigated theoretically by solving vibrational close coupling equations under the rotational IOS approximation. Integrated cross sections for non-reactive vibrational transitions from the initial vibrational states within 0≤v≤4 to all the energetically accessible final vibrational states are calculated at the impact energy below the dissociation energy of H2 molecule. The cross sections for vibrational multiple quantum transitions have the same order of magnitude as the cross section for a single quantum transition. It is confirmed that the multi-quantum vibrational transitions proceed step by step through the vibrational matrix elements Vv,v±1 of interaction potential. It is found that a dip part of the vibrational matrix elements induces vibrational transitions and a positive part makes little effect to these transitions.
