太阳风中离子束流与电磁离子回旋波的相互作用  

Interaction between Ion Beams and Electromagnetic Ion-Cyclotron Waves in the Solar Wind

作　　者：向梁 吴德金[1] XIANG Liang(Purple Mountain Observatory,Chinese Academy of Sciences,Nanjing 210023)

机构地区：[1]中国科学院紫金山天文台,南京210023

出　　处：《天文学报》2021年第4期143-145,共3页Acta Astronomica Sinica

摘　　要：电磁离子回旋波是指频率低于或者接近离子回旋频率的电磁波,其存在左旋和右旋两种偏振状态.通过回旋共振相互作用,电磁离子回旋波能直接与粒子发生能量交换,对太阳风等离子体加热和加速等能化现象起着重要作用.然而,太阳风中电磁离子回旋波的激发机制及其波粒相互作用尚未完全清楚.本学位论文深入、系统地研究了太阳风等离子体环境下离子束流对电磁离子回旋波激发机制的影响及其波粒相互作用,为进一步理解与解释太阳风中微观等离子体物理过程、扰动的物理本质以及粒子能化现象等物理问题提供良好的理论依据.Electromagnetic ion cyclotron wave(EMICW)is a kind of electromagnetic wave whose frequency is lower than or close to the ion cyclotron frequency,and it has two polarization states of left-handed and right-handed.Due to the ion cyclotron resonance,EMICWs can exchange energy with particles directly,which is believed to play an important role in the energization of plasma particles in the solar wind.However,the excitation mechanism of EMICWs and its wave-particle interaction in the solar wind have not fully been understood.

关 键 词：学位论文 激发机制 等离子体加热 等离子体物理 偏振状态 回旋频率 回旋共振 物理本质 

分 类 号：P353.8[天文地球—空间物理学]