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A proposed mechanism for resonances in H+H2 collisions

✍ Scribed by J.G. Muga; R.D. Levine

Publisher: Elsevier Science
Year: 1989
Tongue: English
Weight: 506 KB
Volume: 162
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(89)85057-2

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✦ Synopsis

H +Hz collisions at higher impact parameters can result in the trajectory being deflected towards a collinear Ha configuration by the long range barrier to the insertion mechanism. When the H2 molecule is stretched, this trajectory will be temporarily trapped within a well about the collinear configuration. Samples of 3-D classical trajectories computed on the SLTH potential provide examples of collisions with long delay times which result from this trapping. The higher-b mechanism may be responsible for the resonances seen in the Nieh and Valentini experiment. If so, these resonances are primarily sensitive to the details of the H, potential at longer range (RH_n2 > 3.5 au) for a stretched Hz molecule (rnl > 2 au) and sideways approach.

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