K. Nobusada et K. Sakimoto, 3-DIMENSIONAL CALCULATIONS OF COLLISION-INDUCED DISSOCIATION IN HE-ORDER-SUDDEN APPROXIMATION(H2 USING INFINITE), The Journal of chemical physics, 106(22), 1997, pp. 9078-9083
Quantum mechanical calculations of three-dimensional dissociative He+H
-2 collisions are made using an infinite-order-sudden approximation. V
ibrational and dissociative motions are treated accurately in the dire
ct numerical method of Sakimoto and Onda [J. Chem. Phys. 100, 1171 (19
94)]. The dissociation cross sections for all the initial vibrational
states (v=0-14) are presented at the total energy E=8 eV. The dissocia
tion cross section becomes much larger for higher v. The dissociation
mechanism is different depending on the collision configuration. Two m
odes of dissociation are found to be important: The dissociation occur
s (1) through the compressive action on the vibrational motion of H-2
and (2) through the expansive action on the vibrational motion. (C) 19
97 American Institute of Physics.