Plasma parameters of microarcs towards minuscule discharge gap
Plasma parameters of microarcs towards minuscule discharge gap
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DOI：
10.1002/ctpp.202000033
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发表时间：
2020-06
影响因子：
1.6
通讯作者：
M. Baeva;D. Loffhagen;M. Becker;E. Siewert;D. Uhrlandt
中科院分区：
文献类型：
--
作者：
M. Baeva;D. Loffhagen;M. Becker;E. Siewert;D. Uhrlandt
本文用一维统一非平衡模型描述了在间隙长度为15 ~ 200 μm，电流密度为2 × 105 ~ 106 a /m2时，在冷却的铜阳极和硫化钨阴极之间产生的微弧等离子体参数的行为。结果表明，在给定的电流密度下，当间隙长度减小到几十微米时，微等离子体中的准中性体逐渐缩小并完全消失。间隙长度的减小进一步导致放电电压和电子温度的升高，气体的受热率略有降低。
This paper describes the behaviour of the plasma parameters of microarcs generated between a cooled copper anode and a ceriated tungsten cathode by means of a one‐dimensional unified non‐equilibrium model for gap lengths between 15 and 200 μm and current densities from 2 × 105 up to 106 A/m2. The results obtained show that the decrease of the gap length to a few tens of micrometres for a given current density results in a progressive shrinking of the quasi‐neutral bulk in the microplasma and its complete disappearance. The decrease of the gap length further leads to an increase of the discharge voltage and the electron temperature and to slightly less heating of the gas.