Nonlinear stopping power for ions moving in magnetized two-component plasmas

Journal Article · Sun Nov 15 04:00:00 EST 2009 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.3261848· OSTI ID:21274246

Zhanghu, Hu; Yuanhong, Song; Younian, Wang ^[1]; Guiqiu, Wang ^[2]

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1. School of Physics and Optoelectronic Technology, Dalian University of Technology, Dalian 116024 (China)
2. College of Science, Dalian Fisheries University, Dalian 116024 (China)

Energy losses of test particles in magnetized two-component plasmas are investigated by means of particle-in-cell (PIC) simulations, taking into account the dynamic polarization effects of both the plasma ions and electrons. The influences of the magnetic field, the angle between the test particle velocity and magnetic field, and certain plasma parameters on the nonlinear stopping power are studied. Comparisons are made between the PIC simulations and the linearized dielectric theory to show the nonlinear effects on the stopping power. Simulation results show that the dynamic polarization effects of the plasma ions become significant and contribute mainly to the nonlinear stopping power for low particle velocities and strong magnetic field. The nonlinear effects are found to enhance the stopping power in low particle velocity regions.

• OSTI ID: 21274246
• Journal Information: Physics of Plasmas, Journal Name: Physics of Plasmas Journal Issue: 11 Vol. 16; ISSN PHPAEN; ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
DIELECTRIC PROPERTIES
ELECTRONS
ENERGY LOSSES
IONS
MAGNETIC FIELDS
NONLINEAR PROBLEMS
PLASMA
PLASMA SIMULATION
POLARIZATION
STOPPING POWER
VELOCITY