文献类型：期刊文献

英文题名：The dynamics of ion with electrostatic waves in a sheared magnetic field

作者：Yu, Limin[1];Zhang, Xianmei[1];Sheng, Zheng-Mao[2]

机构：[1]E China Univ Sci & Technol, Dept Phys, Shanghai 200237, Peoples R China;[2]Zhejiang Univ, Inst Fus Theory & Simulat, Dept Phys, Hangzhou 310027, Zhejiang, Peoples R China

年份：2011

卷号：18

期号：12

外文期刊名：PHYSICS OF PLASMAS

收录：;EI(收录号：20120114665060);WOS:【SCI-EXPANDED(收录号:WOS:000298642600006)】；

基金：One of the authors (L. Yu) would like to thank Professor Liu Chen, Professor Hong Qin, and Professor Zhe Gao for helpful discussions. We also thank the anonymous referee for valuable comments. This work is supported by National ITER plans Program of China No. 2009GB105000.

语种：英文

外文关键词：Magnetic fields - Equations of motion - Numerical methods - Electrostatics - Shear flow

摘要：The interaction between an ion and multiple electrostatic waves propagating perpendicularly to an ambient magnetic field with shear is investigated. Based on the Lie transformation method, with the wave amplitude and the magnetic shear both as the perturbation parameters, the analytical formulas for the reduced Hamiltonian is derived and results are compared with numerical calculations of the complete equations of motion for the case of two on-resonance waves and the case of two off-resonance waves, respectively. It is found that the effect of magnetic shear drastically prevents the acceleration of an ion in both cases. This result will help us to understand the behaviors of ions in a magnetic sheared device, such as tokamak. (C) 2011 American Institute of Physics. [doi:10.1063/1.3662438]