Rapid loss of the plasma sheet energetic electrons associated with the growth of whistler mode waves inside the bursty bulk flows

	Rapid loss of the plasma sheet energetic electrons associated with the growth of whistler mode waves inside the bursty bulk flows
	Li, L. Y.; Yu, J.; Cao, J. B.; Zhang, D.; Wei, X. H.; Rong, Z. J.; Yang, J. Y.; Fu, H. S.
刊名	JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
	2013
卷号	118 期号:11 页码:7200-7210
关键词	plasma sheet bursty bulk flow energetic electron loss anisotropy of electron temperature whistler mode wave growth pitch angle scattering
ISSN号	2169-9380
通讯作者	Li, LY (reprint author), Beihang Univ, Sch Astronaut, XueYuan Rd 37, Beijing 100191, Peoples R China.
英文摘要	During the interval similar to 07:45:36-07:54:24UT on 24 August 2005, Cluster satellites (C1 and C3) observed an obvious loss of energetic electrons (similar to 3.2-95keV) associated with the growth of whistler mode waves inside some bursty bulk flows (BBFs) in the midtail plasma sheet (X-GSM similar to-17.25 R-E). However, the fluxes of the higher-energy electrons (128keV) and energetic ions (10-160keV) were relatively stable in the BBF-impacted regions. The energy-dependent electron loss inside the BBFs is mainly due to the energy-selective pitch angle scatterings by whistler mode waves within the time scales from several seconds to several minutes, and the electron scatterings in different pitch angle distributions are different in the wave growth regions. The plasma sheet energetic electrons have mainly a quasi-perpendicular pitch angle distribution (30 degrees<<150 degrees) during the expansion-to-recovery development of a substorm (AE index decreases from 1677nT to 1271nT), and their loss can occur at almost all pitch angles in the wave growth regions inside the BBFs. Unlike the energetic electrons, the low-energy electrons (similar to 0.073-2.1keV) have initially a field-aligned pitch angle distribution (0 degrees 30 degrees and 150 degrees 180 degrees) in the absence of whistler mode waves, and their loss in field-aligned directions is accompanied by their increase in quasi-perpendicular directions in the wave growth regions, but the loss of the low-energy electrons inside the BBFs is not obvious in the presence of their large background fluxes. These observations indicate that the resonant electrons in an anisotropic pitch angle distribution mainly undergo the rapid pitch angle scattering loss during the wave-particle resonances.
收录类别	SCI
语种	英语
内容类型	期刊论文
源URL	[http://ir.nssc.ac.cn/handle/122/4975]
专题	国家空间科学中心_空间科学部
推荐引用方式 GB/T 7714	Li, L. Y.,Yu, J.,Cao, J. B.,et al. Rapid loss of the plasma sheet energetic electrons associated with the growth of whistler mode waves inside the bursty bulk flows[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,2013,118(11):7200-7210.
APA	Li, L. Y..,Yu, J..,Cao, J. B..,Zhang, D..,Wei, X. H..,...&Fu, H. S..(2013).Rapid loss of the plasma sheet energetic electrons associated with the growth of whistler mode waves inside the bursty bulk flows.JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,118(11),7200-7210.
MLA	Li, L. Y.,et al."Rapid loss of the plasma sheet energetic electrons associated with the growth of whistler mode waves inside the bursty bulk flows".JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS 118.11(2013):7200-7210.