Magnetic reconnection: from MHD to QED

被引：22

作者：

Bulanov, S. V. ^{[1
,2
]}

机构：

[1] Natl Inst Quantum & Radiol Sci & Technol QST, Kansai Photon Sci Inst, 8-1-7 Umemidai, Kyoto 6190215, Japan

[2] Russian Acad Sci, AM Prokhorov Inst Gen Phys, Vavilov St 38, Moscow 119991, Russia

来源：

PLASMA PHYSICS AND CONTROLLED FUSION | 2017年 / 59卷 / 01期

关键词：

magnetic reconnection; acceleration of charged particles; relativistic laser plasmas; GAMMA-RAY FLARES; FIELD LINE RECONNECTION; PARTICLE-ACCELERATION; CRAB-NEBULA; RELATIVISTIC RECONNECTION; CHARGED-PARTICLES; CURRENT SHEETS; ELECTRON MAGNETOHYDRODYNAMICS; NEUTRAL SURFACE; HIGH-INTENSITY;

D O I：

10.1088/0741-3335/59/1/014029

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

The paper examines the prospects of using laser plasmas for studying novel regimes of the magnetic field line reconnection and charged particle acceleration. Basic features of plasma dynamics in the three-dimensional configurations relevant to the formation of current sheets in a plasma are addressed by analyzing exact self-similar solutions of the magneto-hydrodynamics and electron magneto-hydrodynamics equations. Then the magnetic field annihilation in the ultrarelativistic limit is considered, when the opposite polarity magnetic field is generated in collisionless plasma by multiple laser pulses, in the regime with a dominant contribution of the displacement current exciting a strong large-scale electric field. This field leads to the conversion of the magnetic energy into the kinetic energy of accelerated particles inside a thin current sheet. Charged particle acceleration during magnetic field reconnection is discussed when radiation friction and quantum electrodynamics effects become dominant.

引用

页数：14

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