Classical-trajectory calculations of the electronic stopping cross-section for low-energy H and H+ projectiles by H^sub 2^-molecules

A model that enables the classical-trajectory simulation of the interaction between an atomic particle and a target containing one or more electrons is devised. It makes use of the so-called Gaussian kernel approximation and ad-hoc potentials. In this way, the most relevant quantum properties of the...

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Bibliographic Details
Published inRadiation effects and defects in solids Vol. 169; no. 2; p. 93
Main Authors Rodríguez-Aguirre, JM, Jakas, MM
Format Journal Article
LanguageEnglish
Published Abingdon Taylor & Francis Ltd 01.02.2014
Subjects
Approximation
Electrons
Hydrogen
Normal distribution
Protons
Simulation
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Summary:A model that enables the classical-trajectory simulation of the interaction between an atomic particle and a target containing one or more electrons is devised. It makes use of the so-called Gaussian kernel approximation and ad-hoc potentials. In this way, the most relevant quantum properties of the electron can be preserved and, at the same time, still using classical mechanics to solve the response of the electronic system to the presence of a moving, heavy charge. As a first step to assessing the proposed model we calculate the electronic stopping cross-section for 1-20 keV Protons and Hydrogen impinging upon atomic and molecular Hydrogen targets. The results show a fairly good agreement between experiments and previous theoretical calculations over the entire bombarding energy studied in this paper. [PUBLICATION ABSTRACT]
ISSN:1042-0150
1029-4953