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论文类型：期刊论文

发表时间：2002-06-01

发表刊物：Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms

收录刊物：Scopus、EI

卷号：193

期号：1-4

页面范围：204-208

ISSN号：0168583X

摘要：Dielectric-response formalism is used to obtain the dynamical interaction potential among the ions in a fast molecule as a sum of a radially symmetric screened Coulomb potential and an asymmetric wake potential. The influence of the wake-potential asymmetry on the electrons bound at each constituent ion in the molecule is described within the Brandt-Kitagawa theoretical framework, and it is found that the charge state of the leading ion may be significantly different from that of the trailing ion. The effects of such ion-charge asymmetry on the Coulomb explosions dynamics of the molecular ion are studied by solving the equations of motion for the constituent ions. ? 2002 Elsevier Science B.V. All rights reserved.