Kinematic Mechanism of Plasma Electron Hole Transverse Instability

被引：15
作者：
Hutchinson, I. H. [1 ]
机构：
[1] MIT, Plasma Sci & Fus Ctr, 77 Massachusetts Ave, Cambridge, MA 02139 USA
来源：
PHYSICAL REVIEW LETTERS | 2018年 / 120卷 / 20期
关键词：
PHASE-SPACE HOLES; SOLITARY WAVES; MAGNETIZED PLASMA; SOLAR-WIND; STABILITY; MAGNETOTAIL; SIMULATION; EVOLUTION; GEOTAIL;
D O I：
10.1103/PhysRevLett.120.205101
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
It is shown through multidimensional particle-in-cell simulations that at least in Maxwellian background plasmas the long-wavelength transverse instability of plasma electron holes is caused not by the previously proposed focusing of trapped particles but instead by kinematic jetting of marginally passing electrons. The mechanism is explained and heuristic analytic estimates obtained which agree with the growth rates and transverse wave numbers observed in the simulations.
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页数：5
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