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Committee 3: Collision Cross Sections and Line Broadening

Published online by Cambridge University Press:  25 April 2016

M. J. Seaton

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Two review articles have been published (1,2).

1.1. Collision broadening by neutral atoms. The continued study of widths and shifts produced by neutral atom impacts at low densities has shown that the Van der Waals interaction ( — C6r−6) as used, for example, in (3), is an inadequate representation of the interatomic potential. The classical theory for a Leonard-Jones potential (C12r−12 — C6r−6) has been developed (4) and subjected to experimental test (5). Further improvements result from introducing a term C8r−8 in the potential (6) and from allowance for quasi-static effects (7). Applications to broadening by H—atom impact are discussed in (8).

Type
Research Article
Information
Transactions of the International Astronomical Union , Volume 14 , Issue 1 , 1970 , pp. 128 - 133
Copyright
Copyright © Reidel 1970

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