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Indexed by:期刊论文

Date of Publication:2012-09-01

Journal:PHYSICS OF PLASMAS

Included Journals:SCIE、EI、Scopus

Volume:19

Issue:9

ISSN No.:1070-664X

Abstract:The influence of a high-intensity laser field on the Coulomb explosion and stopping power for a swift H-3(+) cluster ion in a plasma target is studied by means of the molecular dynamic (MD) method based on the linearized Vlasov-Poisson theory. Excitations of the plasma are described by the classical plasma dielectric function. In the presence of the laser field, the general expressions for the induced potential in the target and the interaction force among the ions within the cluster are derived. Based on the numerical solution of the equations of motion for the constituent ions, the Coulomb explosion patterns and the cluster's stopping power are discussed for a range of laser parameters. Numerical results show that the laser field affects the correlation between the ions and contributes to weaken the wake effect and the stopping power as compared to the laser-free case. On the other hand, the stopping power ratio of H-3(+) cluster is higher than the situation of dicluster of H-2(+) due to the vicinage effect in the cluster. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4752417]