Is the Abrikosov model applicable for describing electronic vortices in plasmas?

被引:23
作者
Gordeev, AV [1 ]
Levchenko, SV [1 ]
机构
[1] Russian Sci Ctr, Kurchatov Inst, Moscow 123182, Russia
基金
俄罗斯基础研究基金会;
关键词
52.20.−j;
D O I
10.1134/1.567714
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
A new model of electronic vortices in plasma is studied. The model assumes that the profile of the Lagrangian invariant I, equal to the ratio I = Omega/n of the electronic vorticity to the electron density, is given. The proposed approach takes into account the magnetic Debye scale r(B) similar or equal to B/4 pi en, which leads to breakdown of plasma quasineutrality. It is shown that the Abrikosov singular model cannot be used to describe electron vortices in plasmas because of the fundamental limitation on the electron vorticity on the axis of a vortex in a plasma. Analysis of the equations shows that in the model considered for the electronic vorticity, the total magnetic flux decreases when the size r(0) of the region in which I not equal 0 becomes less than c/omega(pe) (omega(pe) is the electron plasma frequency). For omega(pe)r(0)/c much less than 1, an electronic vortex is formed in which the magnetic flux decreases as r(0)(2) and the inertial component predominates in the electronic vorticity. The structure arising as omega(pe)r(0)/c double right arrow 0 is a narrow "hole" in the electron density, which can be identified from the spectrum of electromagnetic waves in this region. (C) 1998 American Institute of Physics.
引用
收藏
页码:482 / 488
页数:7
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