Position acceleration to ultrarelativistic energies by an oblique magnetosonic shock wave in an electron-positron-ion plasma

被引：9

作者：

Hasegawa, H ^{[1
]}

Ohsawa, Y

机构：

[1] Natl Inst Fus Sci, Theory & Comp Simulat Ctr, Toki 5095292, Japan

[2] Nagoya Univ, Dept Phys, Nagoya, Aichi 4648602, Japan

来源：

PHYSICS OF PLASMAS | 2005年 / 12卷 / 01期

基金：

日本学术振兴会;

关键词：

D O I：

10.1063/1.1827624

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

Positron acceleration in a shock wave in a plasma consisting of electrons, positrons, and ions is studied with theory and simulations. From the relativistic equation of motion, it is found that an oblique shock wave can accelerate some positrons with the energy increase rate proportional to E (.) B. They move nearly parallel to the external magnetic field, staying in the shock transition region for long periods of time. Then, this acceleration is demonstrated with one-dimensional, relativistic, electromagnetic particle simulations with full particle dynamics. Some positrons have been accelerated to ultrarelativistic energies (gammasimilar to1000) with this mechanism. Parametric study of this acceleration is also made. (C) 2005 American Institute of Physics.

引用

页码：1 / 7

页数：7

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