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Monte Carlo modeling of gas phase ion transport under thermal gradients and external fields

Published online by Cambridge University Press:  07 April 2004

S. Longo  and
P. Diomede
S. Longo
Affiliation:
Dipartimento di Chimica dell'Università di Bari and CNR/IMIP, Bari section, Via Orabona 4, 70126 Bari, Italy
P. Diomede*
Affiliation:
Dipartimento di Chimica dell'Università di Bari and CNR/IMIP, Bari section, Via Orabona 4, 70126 Bari, Italy
*
s.longo@chimica.uniba.itdiomede@chimica.uniba.it
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Abstract

A null collision Monte Carlo method is proposed to calculate the transport kinetics of charged particles in a non equilibrium background of atoms or molecules. The method is an implementation of the null collision Monte Carlo method of Skullerud, extended in order to include the translational distribution of neutrals, also in non uniform cases. As such, it delivers an exact solution of the linear Boltzmann equation. Two equivalent formulations of the method are proposed: an inductive one based on physical considerations, and a more formal one in which the method is deduced from the appropriate transport equation. As a test case, the method is applied to the thermal diffusion of H3+ ions diluted in H2 under an isobaric thermal gradient and with a transversal electric field.

Keywords

Type
Research Article
Information
The European Physical Journal - Applied Physics , Volume 26 , Issue 3: 14th International Colloquium on Plasma Processes (CIP 2003) , June 2004 , pp. 177 - 185
Copyright
© EDP Sciences, 2004

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