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《Plasma Science and Technology》 2014年06期
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Ray Tracing Study of Electromagnetic Ion Cyclotron Waves Associated with Bi-Ion Frequencies

周庆华  杨昶  贺艺华  刘斯  周晓萍  唐立军  肖伏良  
【摘要】:Ray tracing study of electromagnetic ion cyclotron(EMIC)waves is conducted based on a realistic plasma density model.The simulation result shows that EMIC waves propagate away from the equatorial source region to higher latitudes basically along geomagnetic field lines,and are reflected at the region where their frequency matches the local bi-ion frequency.H+band suffers H+-He+bi-ion frequency reflection at lower latitudes,whereas He+band suffers He+-O+bi-ion frequency reflection at higher latitudes.Moreover,the concentration of heavy ions slightly affects the bi-ion frequencies and then slightly determines the reflection location of ray paths of EMIC waves.The current results present the first detailed study on the propagation characteristics of EMIC waves associated with bi-ion frequencies.

【共引文献】
中国期刊全文数据库 前1条
1 张振霞;王辰宇;李强;吴书贵;;准线性扩散系数与空间高能电子特征物理量的关系研究[J];物理学报;2014年07期
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