部分电离等离子体中与涡旋形成有关的Anti-ExB流场
Anti-ExB flow field associated with a vortex formation in a partially ionized plasma
摘要：
为了研究部分电离等离子体中的等离子体动力学，对高密度磁化等离子体进行了研究。离子流场已获得实验，并显示与涡流的形成。最显著的结果是旋转方向与ExB漂移方向相反。中性粒子密度分布的测量结果表明，涡旋周围的中性粒子密度梯度很陡，表明中性粒子的向内动量是由密度梯度引起的。动量通过电荷交换碰撞传递给离子，并在离子上产生有效力。实验结果表明，这种有效力可以支配双极电场，驱动离子的反ExB涡旋运动。
英文摘要：
A high-density magnetized plasma has been studied for understanding of plasma dynamics in partially ionized plasmas. Ion flow field has been obtained experimentally, and is shown to be associated with a vortex formation. The most remarkable result is that the direction of rotation is opposite to that of the ExB drift. Measurement of neutral density profile reveals that there is a steep density gradient of the neutrals around the vortex, suggesting that the generation of inward momentum of the neutrals due to the density gradient. The momentum is transfered to ion with charge-exchange collision, and cause effective force on the ion. The present experiment shows that this effective force may dominate the ambipolar-electric field and drive the anti-ExB vortical motion of ions.
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