PMO OpenIR
Effects of ion thermal pressure on wave properties of electromagnetic ion cyclotron waves in a H+-He+-O+ plasma
Tang, Ying1,2; Zhao, Jinsong2; Sun, Heyu2; Lu, Jianyong1; Wang, Ming1
2017-05-01
Source PublicationPHYSICS OF PLASMAS
ISSN1070-664X
Volume24Issue:5Pages:9
Abstract

Electromagnetic ion cyclotron (EMIC) waves in the H+, He+, and O+ bands are frequently observed in the magnetosphere. This study examines the effects of the thermal pressure of heavy He+ and O+ ions on EMIC wave properties. It illustrates that hot and isotropic heavy ions may completely suppress the growth of He+ band EMIC waves, whereas H+ band waves are growing irrespective of whether the heavy ions are cool or hot. At large O+ ion concentration, O+ band waves grow considerably as hot protons, and heavy ions are anisotropic. Results from the hot fluid model show that anisotropic thermal pressures of heavy ions result in the resonance frequency of EMIC waves larger than that from the cold fluid model, and therefore, narrowing the corresponding stop bands. Furthermore, the anisotropic ion thermal pressures lead to the minimum resonant energy of electrons interacting with EMIC waves at higher frequencies than that predicted by the cold fluid model. Published by AIP Publishing.

DOI10.1063/1.4983622
WOS KeywordPITCH-ANGLE SCATTERING ; EMIC WAVES ; RELATIVISTIC ELECTRONS ; PROTON PRECIPITATION ; GEOMAGNETIC STORMS ; MAGNETOSPHERE ; GENERATION ; EVOLUTION ; GROWTH
Indexed BySCI
Language英语
WOS Research AreaPhysics
WOS SubjectPhysics, Fluids & Plasmas
WOS IDWOS:000400817900024
PublisherAMER INST PHYSICS
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/23043
Collection中国科学院紫金山天文台
Corresponding AuthorZhao, Jinsong
Affiliation1.Nanjing Univ Informat Sci & Technol, Inst Space Weather, Sch Math & Stat, Nanjing 210044, Jiangsu, Peoples R China
2.Chinese Acad Sci, Key Lab Planetary Sci, Purple Mt Observ, Nanjing 210008, Peoples R China
Recommended Citation
GB/T 7714
Tang, Ying,Zhao, Jinsong,Sun, Heyu,et al. Effects of ion thermal pressure on wave properties of electromagnetic ion cyclotron waves in a H+-He+-O+ plasma[J]. PHYSICS OF PLASMAS,2017,24(5):9.
APA Tang, Ying,Zhao, Jinsong,Sun, Heyu,Lu, Jianyong,&Wang, Ming.(2017).Effects of ion thermal pressure on wave properties of electromagnetic ion cyclotron waves in a H+-He+-O+ plasma.PHYSICS OF PLASMAS,24(5),9.
MLA Tang, Ying,et al."Effects of ion thermal pressure on wave properties of electromagnetic ion cyclotron waves in a H+-He+-O+ plasma".PHYSICS OF PLASMAS 24.5(2017):9.
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