Charged particle behavior in the growth and damping stages of ultralow   frequency waves: Theory and Van Allen Probes observations

doi:10.1002/2016JA022447

CORC > 北京大学 > 地球与空间科学学院

	Charged particle behavior in the growth and damping stages of ultralow frequency waves: Theory and Van Allen Probes observations
	Zhou, Xu-Zhi ; Wang, Zi-Han ; Zong, Qiu-Gang ; Rankin, Robert ; Kivelson, Margaret G. ; Chen, Xing-Ran ; Blake, J. Bernard ; Wygant, John R. ; Kletzing, Craig A.
刊名	JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
	2016
关键词	FIELD-LINE RESONANCES RADIATION BELT SOLAR-WIND ULF WAVES GEOMAGNETIC-PULSATIONS ELECTRON ACCELERATION HYDROMAGNETIC-WAVES THEMIS OBSERVATIONS MAGNETOSPHERE EXCITATION
DOI	10.1002/2016JA022447
英文摘要	Ultralow frequency (ULF) electromagnetic waves in Earth's magnetosphere can accelerate charged particles via a process called drift resonance. In the conventional drift resonance theory, a default assumption is that the wave growth rate is time independent, positive, and extremely small. However, this is not the case for ULF waves in the real magnetosphere. The ULF waves must have experienced an earlier growth stage when their energy was taken from external and/or internal sources, and as time proceeds the waves have to be damped with a negative growth rate. Therefore, a more generalized theory on particle behavior during different stages of ULF wave evolution is required. In this paper, we introduce a time-dependent imaginary wave frequency to accommodate the growth and damping of the waves in the drift resonance theory, so that the wave-particle interactions during the entire wave lifespan can be studied. We then predict from the generalized theory particle signatures during different stages of the wave evolution, which are consistent with observations from Van Allen Probes. The more generalized theory, therefore, provides new insights into ULF wave evolution and wave-particle interactions in the magnetosphere.; NSFC [41421003, 41474140]; Canadian Space Agency; National Science and Engineering Research Council of Canada; SCI(E); ARTICLE; xzzhou@pku.edu.cn; 4; 3254-3263; 121
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/492350]
专题	地球与空间科学学院
推荐引用方式 GB/T 7714	Zhou, Xu-Zhi,Wang, Zi-Han,Zong, Qiu-Gang,et al. Charged particle behavior in the growth and damping stages of ultralow frequency waves: Theory and Van Allen Probes observations[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,2016.
APA	Zhou, Xu-Zhi.,Wang, Zi-Han.,Zong, Qiu-Gang.,Rankin, Robert.,Kivelson, Margaret G..,...&Kletzing, Craig A..(2016).Charged particle behavior in the growth and damping stages of ultralow frequency waves: Theory and Van Allen Probes observations.JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS.
MLA	Zhou, Xu-Zhi,et al."Charged particle behavior in the growth and damping stages of ultralow frequency waves: Theory and Van Allen Probes observations".JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS (2016).