Kinetic study of transverse electron-scale interface instability in relativistic shear flows
Interfacial magnetic field structures induced by transverse electron-scale shear instability (mushroom instability) are found to be strongly associated with electron and ion dynamics, which in turn will influence the development of the instability itself. We find that high-frequency electron oscilla...
| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
AIP Publishing LLC
2020-09-01
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| Series: | Matter and Radiation at Extremes |
| Online Access: | http://dx.doi.org/10.1063/5.0017962 |
| _version_ | 1811222514586615808 |
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| author | Peilin Yao Hongbo Cai Xinxin Yan Wenshuai Zhang Bao Du Jianmin Tian Enhao Zhang Xuewu Wang Shaoping Zhu |
| author_facet | Peilin Yao Hongbo Cai Xinxin Yan Wenshuai Zhang Bao Du Jianmin Tian Enhao Zhang Xuewu Wang Shaoping Zhu |
| author_sort | Peilin Yao |
| collection | DOAJ |
| description | Interfacial magnetic field structures induced by transverse electron-scale shear instability (mushroom instability) are found to be strongly associated with electron and ion dynamics, which in turn will influence the development of the instability itself. We find that high-frequency electron oscillations are excited normal to the shear interface. Also, on a larger time scale, the bulk of the ions are gradually separated under the influence of local magnetic fields, eventually reaching an equilibrium related to the initial shear conditions. We present a theoretical model of this behavior. Such separation on the scale of the electron skin depth will prevent different ions from mixing and will thereafter restrain the growth of higher-order instabilities. We also analyze the role of electron thermal motion in the generation of the magnetic field, and we find an increase in the instability growth rate with increasing plasma temperature. These results have potential for providing a more realistic description of relativistic plasma flows. |
| first_indexed | 2024-04-12T08:17:11Z |
| format | Article |
| id | doaj.art-f1308b10e44b4c94ba56254242448483 |
| institution | Directory Open Access Journal |
| issn | 2468-080X |
| language | English |
| last_indexed | 2024-04-12T08:17:11Z |
| publishDate | 2020-09-01 |
| publisher | AIP Publishing LLC |
| record_format | Article |
| series | Matter and Radiation at Extremes |
| spelling | doaj.art-f1308b10e44b4c94ba562542424484832022-12-22T03:40:45ZengAIP Publishing LLCMatter and Radiation at Extremes2468-080X2020-09-0155054403054403-810.1063/5.0017962Kinetic study of transverse electron-scale interface instability in relativistic shear flowsPeilin Yao0Hongbo Cai1Xinxin Yan2Wenshuai Zhang3Bao Du4Jianmin Tian5Enhao Zhang6Xuewu Wang7Shaoping Zhu8Department of Engineering Physics, Tsinghua University, Beijing 100084, ChinaInstitute of Applied Physics and Computational Mathematics, Beijing 100094, ChinaCenter for Applied Physics and Technology, HEDPS, School of Physics, and College of Engineering, Peking University, Beijing 100871, ChinaInstitute of Applied Physics and Computational Mathematics, Beijing 100094, ChinaInstitute of Applied Physics and Computational Mathematics, Beijing 100094, ChinaGraduate School, China Academy of Engineering Physics, Beijing 100088, ChinaGraduate School, China Academy of Engineering Physics, Beijing 100088, ChinaDepartment of Engineering Physics, Tsinghua University, Beijing 100084, ChinaInstitute of Applied Physics and Computational Mathematics, Beijing 100094, ChinaInterfacial magnetic field structures induced by transverse electron-scale shear instability (mushroom instability) are found to be strongly associated with electron and ion dynamics, which in turn will influence the development of the instability itself. We find that high-frequency electron oscillations are excited normal to the shear interface. Also, on a larger time scale, the bulk of the ions are gradually separated under the influence of local magnetic fields, eventually reaching an equilibrium related to the initial shear conditions. We present a theoretical model of this behavior. Such separation on the scale of the electron skin depth will prevent different ions from mixing and will thereafter restrain the growth of higher-order instabilities. We also analyze the role of electron thermal motion in the generation of the magnetic field, and we find an increase in the instability growth rate with increasing plasma temperature. These results have potential for providing a more realistic description of relativistic plasma flows.http://dx.doi.org/10.1063/5.0017962 |
| spellingShingle | Peilin Yao Hongbo Cai Xinxin Yan Wenshuai Zhang Bao Du Jianmin Tian Enhao Zhang Xuewu Wang Shaoping Zhu Kinetic study of transverse electron-scale interface instability in relativistic shear flows Matter and Radiation at Extremes |
| title | Kinetic study of transverse electron-scale interface instability in relativistic shear flows |
| title_full | Kinetic study of transverse electron-scale interface instability in relativistic shear flows |
| title_fullStr | Kinetic study of transverse electron-scale interface instability in relativistic shear flows |
| title_full_unstemmed | Kinetic study of transverse electron-scale interface instability in relativistic shear flows |
| title_short | Kinetic study of transverse electron-scale interface instability in relativistic shear flows |
| title_sort | kinetic study of transverse electron scale interface instability in relativistic shear flows |
| url | http://dx.doi.org/10.1063/5.0017962 |
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