PMO OpenIR  > 太阳和太阳系等离子体研究团组
Selective acceleration in impulsive solar flares
Wang, DY
2001-09-01
Source PublicationCHINESE PHYSICS LETTERS
ISSN0256-307X
Volume18Issue:9Pages:1291-1293
AbstractA plasma acceleration mechanism is proposed to explain the dramatic enhancement in the ratio of He-3/He-4, (enhancement factor 10(2)-10(3)) observed in solar He-3-rich Bares. Considering that coronal plasma is mainly composed of hydrogen and helium ions, the hydrogen ion-helium ion hybrid waves and quasi-perpendicular waves can be excited by energetic electron beam during the impulsive solar Bares. The frequencies of these waves are close to the He-3(++) ion gyrofrequency, but far from the He-4(++) ion gyrofrequency. Most of these waves are selectively absorbed by He-3 ions. These preheated 3He ions can be successively stochastic accelerated by Alfven turbulence, when their velocities are larger than the local Alfven velocity. It makes the ratio of He-3/He-4 dramatically enhanced and the acceleration energy spectrum of He-3 ions forms a power-law distribution during the impulsive solar Bares.
KeywordIon-acceleration
Subject AreaPhysics
WOS HeadingsScience & Technology ; Physical Sciences
WOS KeywordION-ACCELERATION
Indexed BySCI
Language英语
WOS Research AreaPhysics
WOS SubjectPhysics, Multidisciplinary
WOS IDWOS:000171669500045
Citation statistics
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/8199
Collection太阳和太阳系等离子体研究团组
Affiliation1.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Peoples R China
2.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China
Recommended Citation
GB/T 7714
Wang, DY. Selective acceleration in impulsive solar flares[J]. CHINESE PHYSICS LETTERS,2001,18(9):1291-1293.
APA Wang, DY.(2001).Selective acceleration in impulsive solar flares.CHINESE PHYSICS LETTERS,18(9),1291-1293.
MLA Wang, DY."Selective acceleration in impulsive solar flares".CHINESE PHYSICS LETTERS 18.9(2001):1291-1293.
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