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Observation of the orbiting backward peak in the differential cross section for Na(2P)-Hg collisions

✍ Scribed by R. Düren; H.O. Hoppe; H. Tischer

Publisher: Elsevier Science
Year: 1979
Tongue: English
Weight: 214 KB
Volume: 64
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(79)80531-x

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✦ Synopsis

A typical feature of collisions governed by attractive and repulsive forces is the orbiting phenomenon. Most clearly these wLIisions are vi.siiIe as a backward peak in the differential cross section. In this work we report the first observation of this backward peak in the interaction of neutral atoms, specifically for Na<*P) interacting with Hz_

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The quenching cross-sections for collision of Hg( 6 'PI ) with HZ or D2 are measured in the temperature range 300 < T< 700 K. They show a minimum at Tz400 K, suggesting the occurrence of two processes, which may be interpreted using calculated HgH, potential energy curves. These processes depend on