Influence of a strong laser field on Coulomb explosion and stopping power of energetic H{sub 3}{sup +} clusters in plasmas

Journal Article · Sat Sep 15 04:00:00 EDT 2012 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.4752417· OSTI ID:22086169

Guiqiu, Wang; Hong, Gao; Yaochuan, Wang; Li, Yao; Haiyang, Zhong; Lihong, Cheng; Kun, Yang; Wei, Liu ^[1]; Peng, E; Dianguo, Xu ^[2]; Younian, Wang; Zhanghu, Hu ^[3]

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1. Department of Physics, Dalian Maritime University, Dalian 116026 (China)
2. Department of Electrical Engineering, Harbin Institute of Technology, Harbin 150001 (China)
3. School of Physics and Optoelectronic Technology, Dalian University of Technology, Dalian 116023 (China)

The influence of a high-intensity laser field on the Coulomb explosion and stopping power for a swift H{sub 3}{sup +} 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{sub 3}{sup +} cluster is higher than the situation of dicluster of H{sub 2}{sup +} due to the vicinage effect in the cluster.

• OSTI ID: 22086169
• Journal Information: Physics of Plasmas, Journal Name: Physics of Plasmas Journal Issue: 9 Vol. 19; ISSN PHPAEN; ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
COULOMB ENERGY
DIELECTRIC MATERIALS
EQUATIONS OF MOTION
EXCITATION
HYDROGEN IONS 2 PLUS
HYDROGEN IONS 3 PLUS
INTERACTIONS
ION PAIRS
LASER RADIATION
MOLECULAR DYNAMICS METHOD
NUMERICAL SOLUTION
PLASMA
POISSON EQUATION
POTENTIALS
STOPPING POWER