低频Alfvén波多波相干加热粒子模拟

计算物理 ›› 2016, Vol. 33 ›› Issue (4): 441-446.

低频Alfvén波多波相干加热粒子模拟

李芙屹, 向东, 龚学余, 路兴强

南华大学核科学技术学院, 湖南衡阳 421001

收稿日期:2015-06-18 修回日期:2015-12-07 出版日期:2016-07-25 发布日期:2016-07-25
通讯作者: 龚学余,E-mail:gongxueyu@126.com
作者简介:李芙屹(1989-),男,汉族,衡阳,硕士生,从事核聚变与等离子体物理的研究
基金资助:
国家自然科学基金（11375085），国际热核聚变实验堆（ITER）计划专项（2014GB108002），湖南省自然科学基金（2015JJ2121）及湖南省核聚变与等离子体物理创新团队建设项目（NHXTD03）资助

Particle Simulation on Mutiple Wave Heating of Ions with Low-frequency Alfvén Waves

LI Fuyi, XIANG Dong, GONG Xueyu, LU Xingqiang

School of Nuclear Science and Technolodge, University of South China, Hengyang 421001, China

Received:2015-06-18 Revised:2015-12-07 Online:2016-07-25 Published:2016-07-25

摘要/Abstract

摘要： 采用粒子模拟方法，考察多支沿背景磁场方向传播的低频Alfvén波对磁化等离子体的加热过程，研究不同频率的多支低频Alfvén波相干加热.结果表明可以通过调整波的频率比实现对非共振加热过程和随机加热过程这两个阶段的强化.符合相干共振条件的多波加热会强化低频Alfvén波对粒子拾取，进而强化非共振加热，明显提高加热效率.在多波加热的过程中，如果多支波之间的频率差足够小，则多波在调制过程中会形成波包.波包的出现标志着粒子各向异性的强化，从而提升随机加热效率.

关键词: 粒子模拟, 低频Alfvén波, 多波相干加热

Abstract: Heating of magnetized plasma through one towards mutiple shear Alfvén waves with low frequency propagating along background magnetic field is studied with test particle simulation.It shows that mutiple waves whose frequencies match resonance condition lead to significantly efficiency heating by strengthen non-resononce process. With evolution of heating, mutiple waves turn to modulation wave. As frequencis of mutiple waves are close wave packets are created in transverse direction. A great ion temperature anisotrophy is produced and after that randomization process is stengthened either. Efficiency of stochastic heating process is also enhanced.It can be used in controling non-resonance and stochastic heating process by changing frequencise of mutiple low frequency waves.

Key words: particle simulation, low-frequency Alfvén wave, mutiple wave heating

中图分类号:

李芙屹, 向东, 龚学余, 路兴强. 低频Alfvén波多波相干加热粒子模拟[J]. 计算物理, 2016, 33(4): 441-446.

LI Fuyi, XIANG Dong, GONG Xueyu, LU Xingqiang. Particle Simulation on Mutiple Wave Heating of Ions with Low-frequency Alfvén Waves[J]. CHINESE JOURNAL OF COMPUTATIONAL PHYSICS, 2016, 33(4): 441-446.

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