回转半径
电子
物理
离子
磁场
磁重联
航天器
原子物理学
当前工作表
计算物理学
磁流体力学
核物理学
天文
量子力学
作者
L. M. Zelenyĭ,A. G. Frank,Anton Artemyev,A. A. Petrukovich,R. Nakamura
出处
期刊:Plasma Physics and Controlled Fusion
[IOP Publishing]
日期:2016-04-08
卷期号:58 (5): 054002-054002
被引量:16
标识
DOI:10.1088/0741-3335/58/5/054002
摘要
In this paper we review the results of spacecraft observations of current sheets (CSs) of sub-ion spatial scales in the Earth's magnetotail as well as experiments with these structures in laboratory devices. We demonstrate that such sub-ion CSs having a thickness less than the ion gyroradius are usually formed in the vicinity of the magnetic reconnection region and are supported by strong electron currents flowing along magnetic field lines. The magnetic field configuration of sub-ion CSs is close to the force-free configuration, with a strong shear magnetic field component in the CS central region. Spacecraft observations suggest that parallel electron currents are generated by electron beams (pronounced enhancement of the phase space density for electrons with small pitch angles and energies ∼1–3 keV). We discuss several models describing such force-free sub-ion CSs.
科研通智能强力驱动
Strongly Powered by AbleSci AI