Dissociative electron attachment to electronically excited CS2

Rangwala, S. A. ; Kumar, S. V. K. ; Krishnakumar, E. (2001) Dissociative electron attachment to electronically excited CS2 Physical Review A, 64 (1). 012707_1-012707_5. ISSN 1050-2947

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Official URL: http://pra.aps.org/abstract/PRA/v64/i1/e012707

Related URL: http://dx.doi.org/10.1103/PhysRevA.64.012707

Abstract

Dissociative attachment of low-energy electrons to the electronically excited and bent 1B2 state of CS2 is studied. The measurements are carried out in a crossed three-beam geometry in which a laser beam is used to prepare the excited molecules. The absolute cross sections for the formation of S and CS by dissociative attachment to the 1B2 excited state are determined by a measurement of the relative number density in the excited state. Based on the earlier observation of the formation of S2from the linear symmetric ground state of CS2, an increase in the S2 cross section was expected from the bent excited state. However, S2is found to be absent from this state. Possible mechanisms are proposed to explain this counterintuitive result.

Item Type:Article
Source:Copyright of this article belongs to American Physical Society.
ID Code:18059
Deposited On:17 Nov 2010 13:15
Last Modified:03 Jun 2011 12:23

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