Open AccessDYNAMIC INTERACTING FORCE AND EVOLUTION OF COULOMB EXPLOSION PATTERNS FOR SWIFT H+2 PENETRATING THROUGH SOLIDS
Author(s) -
YouNian Wang
Publication year - 1999
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.48.11118
Subject(s) - coulomb explosion , coulomb , physics , ion , coulomb's law , dielectric , molecular dynamics , beam (structure) , atomic physics , classical mechanics , force dynamics , fictitious force , mechanics , quantum mechanics , optics , electron , ionization , mechanical engineering , engineering
We simulate the Coulomb explosion patterns for swift H+2 ions penetrating through solids by solving the equations of motion. The forces acting on individual fragments are given by the stopping force and the dynamic interacting force. With the plasmon-pole approximation dielectric function, the linear-response dielectric theory is used to determine the dynamic interacting force. The initial directions of the molecular axis with respect to the beam direction are assumed to be random. It is found that due to the dynamic-interaction effects, the molecular axes tend to align to the beam direction and the energy losses of the trailing ions are larger than that of the leading ions.