Energizing and depletion of neutrals by a collisional plasma
Energizing and depletion of neutrals by a collisional plasma
复制标题
碰撞等离子体对中性子的激发和消耗
DOI：
10.1088/0963-0252/17/2/024016
复制
发表时间：
2008
影响因子：
3.8
通讯作者：
A. Fruchtman
中科院分区：
文献类型：
--
作者：
A. Fruchtman
中性耗尽对低温等离子体的稳态有重要影响。最近的理论分析预测了以前意想不到的中性耗尽碰撞和碰撞制度的影响。在本文中，我们解决的碰撞等离子体的中性气体中的能量沉积的效果。沉积在中性的功率的分数示出为独立的功率的量。我们讨论的第一个案例是热化中性气体。结果表明，低的中性气体的热导率是其次是高的中性温度，导致在一个高的中性耗尽，即使等离子体压力是小的。在第二种情况下，中性粒子通过与离子的电荷交换被加速，导致我们称之为中性泵浦，这相当于无碰撞等离子体中的离子泵浦。中性耗尽被发现在第二种情况下，一个封闭的系统（无净质量流量）和一个开放的系统（有限的质量流量）。采用碰撞等离子体和泵中性的推力器进行了比较，采用无碰撞等离子体之前分析的推力器。
Neutral depletion can significantly affect the steady state of low temperature plasmas. Recent theoretical analyses predicted previously unexpected effects of neutral depletion in both collisional and collisionless regimes. In this paper we address the effect of the energy deposited in the neutral gas by a collisional plasma. The fraction of power deposited in the neutrals is shown to be independent of the amount of power. The first case we address is of a thermalized neutral gas. It is shown that a low heat conductivity of the neutral gas is followed by a high neutral temperature that results in a high neutral depletion even if the plasma pressure is small. In the second case neutrals are accelerated through charge exchange with ions leading to what we call neutral pumping, which is equivalent to ion pumping in a collisionless plasma. Neutral depletion is found in the second case for both a closed system (no net mass flow) and an open system (a finite mass flow). A thruster that employs a collisional plasma and pumped neutrals is compared with the thruster analyzed before that employs collisionless plasma.
通过螺旋天线生产大容量 Helicon 等离子体
DOI：
--
发表时间：
2003
期刊：
Proc.of XXVI International Conference on Phenomenon in Ionized Gases 1
影响因子：
--
作者：
Shunjiro Shinohara;et al.
通讯作者：
et al.