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arXiv 0911.2108physics.plasm-ph
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涡环对尘埃粒子的加速作用

Acceleration of dust particles by vortex ring

Zahida Ehsan, N. L. Tsintsadze, J. Vranjes, M. Coppins, R. Khan, S. Poedts, J. E. Allen

摘要:

结果表明,大振幅圆极化电磁波与尘埃等离子体的非线性相互作用产生了一种非定常有质动力,这种有质动力又产生了涡旋环和磁场。然后在泵浦波传播方向上产生的涡环可以加速最初处于静止状态的微米级尘埃颗粒,并最终形成非相对论性尘埃射流。这种效应是完全不稳定的,不像线性漩涡,尘埃粒子在这里不旋转。特别指出,涡环或闭合暗条可以成为托卡马克等离子体中尘埃加速的潜在候选者。

英文摘要:

It is shown that nonlinear interaction between large amplitude circularly polarized EM wave and dusty plasma leads to a nonstationary ponderomotive force which in turn produces a vortex ring, and magnetic field. Then the ensuing vortex ring in the direction of propagation of the pump wave can accelerate the micron-size dust particles which are initially at rest and eventually form a non relativistic dust jet. This effect is purely nonstationary and unlike linear vortices, dust particles do not rotate here. Specifically, it is pointed out that the vortex ring or closed filament can become potential candidate for the acceleration of dust in tokamak plasmas.

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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