文献类型：期刊文献

中文题名：The dynamics of an ion acting on two monochromatic obliquely propagating Alfvén waves

英文题名：The dynamics of an ion acting on two monochromatic obliquely propagating Alfvén waves

作者：Yu, Limin[1]; Sheng, Zhengmao[2]; Zhang, Xianmei[1]; Xue, Erbing[1]

机构：[1] Department of Physics, East China University of Science and Technology, Shanghai, 200237, China; [2] Department of Physics, Institute for Fusion Theory and Simulation, Zhejiang University, Hangzhou, 310027, China

年份：2017

卷号：19

期号：7

起止页码：12

中文期刊名：Plasma Science and Technology

外文期刊名：Plasma Science and Technology

收录：EI(收录号：20172303751953);Scopus;CSCD:【CSCD2017_2018】；

基金：supported by National Natural Science Foundation of China under Grant Nos. 11075140, 11205060 and 11405058;the National Magnetic Confinement Fusion Science Program of China under Grant Nos. 2013GB106002 and 2015GB110005

语种：英文

中文关键词：Alfven waves;Lie transformation;Poincare section;stochastic heating

外文关键词：Shear flow - Wave propagation - Stochastic systems

摘要：The interaction between a magnetized ion and two monochromatic shear Alfvtn waves propagating obliquely to an ambient magnetic field is investigated both analytically and numerically. According to the Hamiltonian of this system, the invariant of motion at the lowest order and the half-island widths at the corresponding resonances are obtained analytically using the Lie transformation method. It is shown that these theoretical results agree with the numerical ones from the Poincare surface of section. The regular motions from the invariant and the transition to stochasticity due to resonance overlapping are demonstrated. Compared to the case of a single wave, there may be a lower stochastic threshold in the multiple-wave problem.
The interaction between a magnetized ion and two monochromatic shear Alfvén waves propagating obliquely to an ambient magnetic field is investigated both analytically and numerically. According to the Hamiltonian of this system, the invariant of motion at the lowest order and the half-island widths at the corresponding resonances are obtained analytically using the Lie transformation method. It is shown that these theoretical results agree with the numerical ones from the Poincaré surface of section. The regular motions from the invariant and the transition to stochasticity due to resonance overlapping are demonstrated. Compared to the case of a single wave, there may be a lower stochastic threshold in the multiple-wave problem. ? 2017 Hefei Institutes of Physical Science, Chinese Academy of Sciences and IOP Publishing.