Enhanced plasma transport due to neutral depletion
Enhanced plasma transport due to neutral depletion
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DOI：
10.1103/physrevlett.95.115002
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发表时间：
2005-09-09
影响因子：
8.6
通讯作者：
Rax, JM
中科院分区：
文献类型：
--
作者：
Fruchtman, A;Makrinich, G;Rax, JM
自洽求解了等离子体和中性气体在压力平衡下的动力学，揭示了中性耗尽的影响。解析关系，确定的电子温度，电离率，和等离子体密度的推导。由于电离和输运的固有耦合，增加电离能量可以非线性地增强输运过程。我们表明，这种增强的等离子体传输由于中性耗尽可能会导致在一个意想不到的减少等离子体密度时，功率增加，尽管产生的等离子体的通量的增加。
The dynamics of plasma and neutral gas in pressure balance are solved self-consistently to reveal the impact of neutral depletion. Analytical relations that determine the electron temperature, the rate of ionization, and the plasma density are derived. Because of the inherent coupling of ionization and transport, an increase of the energy invested in ionization can nonlinearly enhance the transport process. We show that such an enhancement of the plasma transport due to neutral depletion can result in an unexpected decrease of the plasma density when power is increased, despite the increase of the flux of generated plasma.