Energy Conversion and Partition in Plasma Turbulence Driven by Magnetotail Reconnection
文献类型：期刊论文
| 作者 | Li,Xinmin3,4,5; Wang,Rongsheng3,4,5; Huang,Can2; Lu,Quanming3,4,5; Lu,San3,4,5; Burch,J. L.1; Wang,Shui3,4,5 |
| 刊名 | The Astrophysical Journal
 |
| 出版日期 | 2022-08-29 |
| 卷号 | 936期号:1 |
| ISSN号 | 0004-637X |
| DOI | 10.3847/1538-4357/ac84d7 |
| 英文摘要 | Abstract A long-outstanding issue in fundamental plasma physics is how magnetic energy is finally dissipated in kinetic scale in the turbulent plasma. Based on the Magnetospheric Multiscale mission data in the plasma turbulence driven by magnetotail reconnection, we establish the quantitative relation between energy conversion ( J ? E ; J is current density and E is electric field) and current density (J). The results show that the magnetic energy is primarily released in the perpendicular directions (up to 90%), in the region with current density less than 2.3 J rms, where J rms is the rms value of the total current density ∣ J ∣. In the relatively weak current region (<1.0 J rms), the ions get most of the released energy while the largely negative energy conversion rate of the electrons means a dynamo action. In the strong currents (>1.0 J rms), the ion energization was negligible and the electrons are significantly energized. Moreover, a linearly increasing relationship was established between ∣ J ? E ∣ and J . The observations indicate that ions overall dominate energy conversion in turbulence, but the electron dynamics are crucial for energy conversion in intense currents and the turbulence evolution. |
| 语种 | 英语 |
| WOS记录号 | IOP:APJ_936_1_34 |
| 出版者 | The American Astronomical Society |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/110541]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Wang,Rongsheng |
| 作者单位 | 1.Southwest Research Institute, San Antonio, TX, USA 2.Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, People's Republic of China 3.Anhui Mengcheng Geophysics National Observation and Research Station, University of Science and Technology of China, Mengcheng 233500 Anhui, People's Republic of China 4.CAS Center for Excellence in Comparative Planetology, Hefei 230026, People's Republic of China 5.CAS Key Laboratory of Geospace Environment, Department of Geophysics and Planetary Science, School of Earth and Space Sciences, University of Science and Technology of China, Hefei 230026, People's Republic of China; rswan@ustc.edu.cn |
| 推荐引用方式 GB/T 7714 | Li,Xinmin,Wang,Rongsheng,Huang,Can,et al. Energy Conversion and Partition in Plasma Turbulence Driven by Magnetotail Reconnection[J]. The Astrophysical Journal,2022,936(1). |
| APA | Li,Xinmin.,Wang,Rongsheng.,Huang,Can.,Lu,Quanming.,Lu,San.,...&Wang,Shui.(2022).Energy Conversion and Partition in Plasma Turbulence Driven by Magnetotail Reconnection.The Astrophysical Journal,936(1). |
| MLA | Li,Xinmin,et al."Energy Conversion and Partition in Plasma Turbulence Driven by Magnetotail Reconnection".The Astrophysical Journal 936.1(2022). |
入库方式： OAI收割
来源：地质与地球物理研究所
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