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高能离子束流引起低频电磁波动的特性
Alternative TitleCHARACTERISTICS OF LOW FREQUENCY ELECTROMAGNETICWAVES GENERATED BY HIGH ENERGY ION BEAM
汪学毅; 曹晋滨; 张效信; 周国成; 北京8701信箱
Department空间天气学国家重点实验室
Source Publication地球物理学报
2002
Volume45Issue:1Pages:1-7
ISSN0001-5733
Language中文
Keyword日冕 高能离子束流 低频电磁波 Alfven湍动 数值模拟 太阳风
Abstract理论和数值模拟研究了日冕区高速低密离子束流与等离子体相互作用产生的低频电磁波动特征.结果表明,在线性阶段,系统波动主要表现为短波长的非共振模的激发;在非线性阶段,模占优,短波长波逐渐衰减,此时系统波动表现为具有Alfven波动特征,波的能谱为双幂律谱.这些结果可用来解释太阳风中的Alfven湍动现象.
Other AbstractThis paper studied low frequency electromagnetic waves generated by the ion beams with high speed and low density in the coronal region by computer simulation and analytic method.Results show that in the linear phase , nonresonant mode of short wavelength is excited.In the nonlinear phase ,long wavelength mode dominates ,while short wavelength mode gradually decreases and waves display the features of Alfvén waves.These results can be used to explain the turbulence phenomena in the solar wind.
Indexed ByCSCD
Funding Project中国科学院空间科学与应用研究中心
Citation statistics
Document Type期刊论文
Version出版稿
Identifierhttp://ir.nssc.ac.cn/handle/122/1364
Collection空间科学部
Corresponding Author北京8701信箱
Recommended Citation
GB/T 7714
汪学毅,曹晋滨,张效信,等. 高能离子束流引起低频电磁波动的特性[J]. 地球物理学报,2002,45(1):1-7.
APA 汪学毅,曹晋滨,张效信,周国成,&北京8701信箱.(2002).高能离子束流引起低频电磁波动的特性.地球物理学报,45(1),1-7.
MLA 汪学毅,et al."高能离子束流引起低频电磁波动的特性".地球物理学报 45.1(2002):1-7.
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