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Semiclassical vibration-rotation transition probabilities for motion in molecular state averaged potentials. (1971)

Stallcop, J. R.

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Publication Date: 2011-08-16

Description: Collision-induced vibration-rotation transition probabilities are calculated from a semiclassical three-dimensional model, in which the collision trajectory is determined by the classical motion in the interaction potential that is averaged over the molecular rotational state, and compared with those for which the motion is governed by a spherically averaged potential. For molecules that are in highly excited rotational states, thus dominating the vibrational relaxation rate at high temperature, it is found that the transition probability for rotational state averaging is smaller than that for spherical averaging. For typical collisions, the transition cross section is decreased by a factor of about 1.5 to 2.

Keywords: PHYSICS, ATOMIC, MOLECULAR, AND NUCLEAR

Type: Chemical Physics Letters; 12; Dec. 1

Format: text

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