Flow characteristics of a cold helium arc‐jet plasma along open field lines
Flow characteristics of a cold helium arc‐jet plasma along open field lines
复制标题
冷氦电弧喷射等离子体沿开放场线的流动特性
DOI：
10.1002/tee.20425
复制
发表时间：
2009
影响因子：
1
通讯作者：
H. Akatsuka
中科院分区：
文献类型：
--
作者：
Kazuyuki Yoshida;T. Kanuma;H. Ichii;A. Nezu;H. Matsuura;H. Akatsuka
实验研究了电子温度小于1 eV、沿着开放场线流动的膨胀冷氦等离子体射流的等离子体参数，包括离子声学马赫数。实验发现，离子马赫数从1增加到3，等离子体势降低约1V。我们基于准一维流动模型讨论了实验结果，其中等离子体被假定为准中性的，处于热力学平衡状态。我们的模型描述了离子加速，轴向分布的电位降，和电子的温度/密度。该模型还表明，氦离子被电场和跨音速流横截面积的增加加速。离子加速后，离子马赫数降低，电子温度升高。这些现象进行了讨论的冲击波。值得注意的是，即使在冲击波中，电子密度也会降低。这是讨论的快速复合，因为电子温度低。Copyright © 2009日本电气工程师协会。由John Wiley & Sons公司出版
We experimentally study plasma parameters including ion acoustic Mach number of expanding cold helium plasma jet with an electron temperature of less than 1 eV flowing along open field lines. It is experimentally found that the ion Mach number increases from 1 to 3, and that the plasma potential decreases by about 1 V. We discuss the experimental results based on a quasi one‐dimensional flow model in which the plasma is assumed to be quasi‐neutral and in a state of thermodynamic equilibrium. Our model describes the ion acceleration, the axial profiles of the potential drop, and the electron temperature/density. The model also shows that the helium ions are accelerated both by the electric field and by the increasing cross‐sectional area of the transonic flow. After the ion acceleration, the ion Mach number decreases and the electron temperature increases. These phenomena are discussed in terms of a shock wave. It is noted that the electron density decreases even in the shock wave. This is discussed in terms of rapid recombination because of the low electron temperature. Copyright © 2009 Institute of Electrical Engineers of Japan. Published by John Wiley & Sons, Inc.
DOI：
10.1585/jspf.78.1352
发表时间：
2002-12
期刊：
Journal of Plasma and Fusion Research
影响因子：
--
作者：
M. Inutake;A. Ando;K. Hattori;H. Tobari;T. Yagai
通讯作者：
M. Inutake;A. Ando;K. Hattori;H. Tobari;T. Yagai
阿尔文马赫探针在快速流动等离子体中的评估
DOI：
--
发表时间：
2008
期刊：
影响因子：
--
作者：
Shingo JO;et.al.
通讯作者：
et.al.