PMO OpenIR  > 太阳活动的多波段观测研究团组
Beam-plasma instability excited by non-thermal electrons with arbitrary distribution function and comparison with electron-cyclotron master instability
Huang, GL; Wang, DY; Mao, DY
1996-04-01
Source PublicationJOURNAL OF PLASMA PHYSICS
ISSN0022-3778
Volume55Pages:195-207
AbstractAn equation is derived for the growth rates of the beam-plasma instability excited by non-thermal electrons with arbitrary distribution function, and it is shown that the reactive instability does not depend on the assumption of a monoenergetic distribution. Hence the properties of electromagnetic waves are calculated for the hollow beam and loss-cone distribution functions. The general characteristics and structures of the growth rates are similar to the results for the monoenergetic distribution, but there are still some differences in the relation between the growth rates and the relevant parameters, such as the ambient parameter omega(pe)/Omega e, the angle of propagation theta and the pitch angle alpha. The main purpose of this paper is to compare the properties of the beam-plasma instability (reactive) and the electron-cyclotron maser instability (kinetic) under similar ambient conditions. The calculations show that both kinds of instabilities are easily excited at larger angles of propagation with respect to the ambient magnetic field, which means that both depend mainly on the free energy of the non-thermal electrons perpendicular to the magnetic field. The magnitudes of the growth rates of the two kinds of instabilities are comparable under the same ambient conditions. However, because the non-resonant wave-particle interaction is taken into consideration for the beam-plasma instability, which makes the resonant peaks broaden and connect with each other, the spectra of the beam-plasma instability are also more complicated than that of the maser instability, and the range of the angle of propagation of the growing waves in the non-resonant case is also larger than that in the resonant case.
Subject AreaAstronomy & Astrophysics
WOS HeadingsScience & Technology ; Physical Sciences
WOS KeywordRADIO-EMISSION PROCESSES ; AMPLIFICATION
Indexed BySCI
Language英语
WOS Research AreaPhysics
WOS SubjectPhysics, Fluids & Plasmas
WOS IDWOS:A1996UM67000004
Citation statistics
Cited Times:6[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/8440
Collection太阳活动的多波段观测研究团组
Affiliation1.PURPLE MT OBSERV,NANJING 210008,PEOPLES R CHINA
2.HEHAI UNIV,NANJING 210008,PEOPLES R CHINA
Recommended Citation
GB/T 7714
Huang, GL,Wang, DY,Mao, DY. Beam-plasma instability excited by non-thermal electrons with arbitrary distribution function and comparison with electron-cyclotron master instability[J]. JOURNAL OF PLASMA PHYSICS,1996,55:195-207.
APA Huang, GL,Wang, DY,&Mao, DY.(1996).Beam-plasma instability excited by non-thermal electrons with arbitrary distribution function and comparison with electron-cyclotron master instability.JOURNAL OF PLASMA PHYSICS,55,195-207.
MLA Huang, GL,et al."Beam-plasma instability excited by non-thermal electrons with arbitrary distribution function and comparison with electron-cyclotron master instability".JOURNAL OF PLASMA PHYSICS 55(1996):195-207.
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