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arXiv 0811.4730physics.plasm-phphysics.flu-dyn
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具有各向异性压力的二维等离子体展开

Two-dimension plasma expansions with anisotropic pressure

Yongsheng Huang, Yuanjie Bi, Xiaojiao Duan, Naiyan Wang, Xiuzhang Tang, Zhe Gao

摘要:

提出了一个二维各向异性压力下等离子体膨胀的自相似解。利用该解,等离子体锋由一部分双曲线(或平面)和一部分椭圆中心的小尖投影组成,这取决于等离子体纵、横向温度比$κ^2$与电子离子质量比$μ$的关系。Zhang和同事的实验(PRL,99,167602(2007))支持我们对$κ^2\in(τ,1]$的结果。对于$κ^2\leqτ$,由于纵向库仑爆炸,在$90^{\text{o}}$附近的角度处存在异常的高能等离子体发射。

英文摘要:

A two-dimension self-similar solution is proposed for a plasma expansion with anisotropic pressure. With the solution, it depends on the relationship between the ratio of the longitudinal and the transverse temperature of the plasma, $κ^2$ and the electron-ion mass ratio, $μ$, that the plasma front is composed by a part of hyperbolic (or a plane) and a small pointed projection at the center or a part of an ellipse. Zhang and coworkers's experiments (PRL, 99, 167602 (2007))support our results for $κ^2\in(τ,1]$. For $κ^2\leqτ$, there is an anomalous high-energy plasma emission at the angle of near $90^{\text{o}}$ due to longitudinal Coulomb explosion.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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