Electronic transport of Lorentz plasma with collision and magnetic field effects
Electronic transport of Lorentz plasma with collision and magnetic field effects
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DOI：
10.1088/1674-1056/25/10/105201
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发表时间：
2016-08
影响因子：
1.7
通讯作者：
C. Lv;F. Wan;M. Jia;Zi-Liang Li;H. Sang;B. Xie
中科院分区：
文献类型：
--
作者：
C. Lv;F. Wan;M. Jia;Zi-Liang Li;H. Sang;B. Xie
通过求解不同电子密度分布的玻尔兹曼方程，研究了碰撞和磁场作用下洛伦兹等离子体的电子横向输运。对于麦克斯韦分布，输运系数随Ω的增大而减小，Ω为电子磁回旋频率与等离子体碰撞频率之比。这意味着电子有可能在强磁场的作用下高度准直。对于不同宽度的准单能分布，输运系数随着系数的减小而减小。特别是当宽度趋近于零时，横向输运系数几乎不受磁场的影响，得到最小的输运系数。结果表明，强磁场和准单能分布都有利于减少电子横向输运。该研究也有助于理解惯性约束聚变背景下等离子体输运的相关问题。
The electronic transverse transport of Lorentz plasma with collision and magnetic field effects is studied by solving the Boltzmann equation for different electron density distributions. For the Maxwellian distribution, it is shown that transport coefficients decrease as Ω increases, Ω is the ratio of an electron’s magneto-cyclotron frequency to plasma collision frequency. It means that the electrons are possible to be highly collimated by a strong magnetic field. For the quasi-monoenergetic distribution with different widths, it is found that the transport coefficients decrease greatly as ɛ̄ decreases. In particular when the width approaches to zero the transverse transport coefficients are hardly affected by the magnetic field and the minimal one is obtained. Results imply that the strong magnetic field and quasi-monoenergetic distribution are both beneficial to reduce the electronic transverse transport. This study is also helpful to understand the relevant problems of plasma transport in the background of the inertial confinement fusion.