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Quantum reflection model for ionization rate coefficients in cold metastable helium collisions

Lookup NU author(s): Professor Alan Dickinson

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Abstract

A simple, quantum-reflection based, model is presented for describing ionization in collisions of cold metastable helium atoms (He*). This model employs only the van der Waals coefficient and the reduced mass. For atoms reaching short distances an ionization probability of 100% is assumed. The ionization rate coefficient can be written in closed form. Good agreement with more elaborate calculations for collisions of 3He* and 4He* is obtained for temperatures up to a few mK. © 2007 IOP Publishing Ltd.

Publication metadata

Author(s): Dickinson AS

Publication type: Article

Publication status: Published

Journal: Journal of Physics B: Atomic, Molecular and Optical Physics

Year: 2007

Volume: 40

Issue: 16

Pages: F237-F240

Date deposited: 19/07/2010

ISSN (print): 0953-4075

ISSN (electronic): 1361-6455

Publisher: Institute of Physics Publishing Ltd.

URL: http://dx.doi.org/10.1088/0953-4075/40/16/F02

DOI: 10.1088/0953-4075/40/16/F02

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