IGGCAS OpenIR  > 地球与行星物理院重点实验室
Effect of Charge accumulation on Magnetic Rayleigh-Taylor Instability
Liu, Kangkang1,2
2019-07-29
Source PublicationSCIENTIFIC REPORTS
ISSN2045-2322
Volume9Pages:5
AbstractThe intuitive physical description of magnetic Rayleigh-Taylor instability in some textbooks is generally considered to be: a small perturbation causes current discontinuity, which produce charge accumulation, the electric field produced by the accumulated charge amplify the initial perturbation. However, in calculating the linear growth rate of magnetic Rayleigh-Taylor instability (MRTI), the displacement current term in the Maxwell's equations is ignored, which means the contribution of charge accumulation to the growth of MRTI is totally ignored. In this article, we calculated the linear growth rate of MRTI with the displacement current term in Maxwell's equations retained. We show that the contribution of charge accumulation to the growth of MRTI is negligible only when the nominal Alfven speed is much smaller than the light speed. For space plasma whose nominal Alfven speed is generally much smaller than the light speed, the linear growth rate previous calculated is right but the intuitive physical description of MRTI is wrong. For laboratory plasma whose nominal Alfven speed maybe comparable to light speed, the intuitive physical description of MRTI is also inaccurate and the linear growth rate of MRTI is undervalued.
DOI10.1038/s41598-019-47550-5
WOS KeywordCURRENTS ; PHYSICS ; FIELDS
Language英语
WOS Research AreaScience & Technology - Other Topics
WOS SubjectMultidisciplinary Sciences
WOS IDWOS:000477701800066
PublisherNATURE PUBLISHING GROUP
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/92952
Collection地球与行星物理院重点实验室
Corresponding AuthorLiu, Kangkang
Affiliation1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earth & Planetary Phys, Beijing, Peoples R China
2.Univ Chinese Acad Sci, Beijing, Peoples R China
First Author AffilicationKey Laboratory of Earth and Planetary Physics, Chinese Academy of Sciences
Corresponding Author AffilicationKey Laboratory of Earth and Planetary Physics, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Liu, Kangkang. Effect of Charge accumulation on Magnetic Rayleigh-Taylor Instability[J]. SCIENTIFIC REPORTS,2019,9:5.
APA Liu, Kangkang.(2019).Effect of Charge accumulation on Magnetic Rayleigh-Taylor Instability.SCIENTIFIC REPORTS,9,5.
MLA Liu, Kangkang."Effect of Charge accumulation on Magnetic Rayleigh-Taylor Instability".SCIENTIFIC REPORTS 9(2019):5.
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