取决于毛羽厚度的 W 型毛羽阴极电弧的工作电压和电弧等离子体的质量/电荷成分

IF 2.3 2区物理与天体物理 Q1 NUCLEAR SCIENCE & TECHNOLOGY

Nuclear Materials and Energy Pub Date : 2024-09-01 DOI:10.1016/j.nme.2024.101727

S.A. Barengolts , Yu.A. Zemskov , D.L. Shmelev , D. Hwangbo , S. Kajita

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引用次数: 0

摘要

在不同的电弧脉冲数下，测量了不同模糊厚度的 W-fuzz 样品的电弧工作电压和电弧等离子体的质量/电荷成分。结果发现，在最初几个电弧脉冲内，模糊结构的形成导致电弧工作电压显著下降。随着脉冲数的增加，电弧等离子体中的工作电压和钨离子的平均电荷增加到传统钨阴极的特征值。我们使用经验内聚能法则和阴极等离子体射流中发生的电离过程的磁流体力学模型对所获得的实验数据进行了理论分析。

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Operating voltage of a W-fuzz cathode arc and the mass/charge composition of the arc plasma depending on the fuzz thickness

The arc operating voltage and the mass/charge composition of the arc plasma were measured for W-fuzz samples with different fuzz thicknesses at different numbers of arc pulses. It was found that the formation of a fuzz structure led to a significant decrease in the arc operating voltage within the first few arc pulses. With an increase in the number of pulses, the operating voltage and the mean charge of tungsten ions in the arc plasma increased to values characteristic of conventional tungsten cathodes. The obtained experimental data were analyzed theoretically using an empirical cohesive energy rule and a magnetohydrodynamic model of the ionization processes occurring in a cathode plasma jet.

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来源期刊

Nuclear Materials and Energy Materials Science-Materials Science (miscellaneous)

CiteScore

3.70

自引率

15.40%

发文量

175

审稿时长

20 weeks

期刊介绍： The open-access journal Nuclear Materials and Energy is devoted to the growing field of research for material application in the production of nuclear energy. Nuclear Materials and Energy publishes original research articles of up to 6 pages in length.