Ion charge state distribution in vacuum arc plasmas for composite Sn-Pb cathodes
Ion charge state distribution in vacuum arc plasmas for composite Sn-Pb cathodes
复制标题
DOI：
10.1109/deiv.2016.7748738
复制
发表时间：
2016-09
期刊：
影响因子：
--
通讯作者：
V. Frolova;A. Nikolaev;E. Oks;G. Yushkov
中科院分区：
文献类型：
--
作者：
V. Frolova;A. Nikolaev;E. Oks;G. Yushkov
本文报道了用不同原子组成的锡铅复合阴极制备真空电弧等离子体的实验结果。等离子体是在Mevva-V上产生的。钌源。用飞行时间谱仪研究了等离子体的质量电荷状态。并与纯锡、纯铅阴极的等离子体参数进行了比较。结果表明，等离子体中各阴极组分的离子分数与其在正极材料中的原子分数相对应。两组分离子的电荷状态由阴极点等离子体中的平均电子温度决定。纯Sn-Pb复合阴极的平均电荷态高于纯Sn-Pb复合阴极。讨论了观测到的效应的物理性质。
The report presents experimental results on the parameters of vacuum arc plasmas produced with composite Sn-Pb cathodes differing in atomic composition. The plasma was generated on a Mevva-V.Ru ion source. The mass-charge state of the plasma was studied using a time-of-flight spectrometer. The plasma parameters were compared with those for pure Sn and Pb cathodes. It is shown that the ion fraction of each cathode component in the plasma corresponds to its atomic fraction in the cathode material. The charge state of ions of both components is determined by the average electron temperature in the cathode spot plasma. The mean ion charge state for pure cathodes is higher than that for composite Sn-Pb cathodes. The physics of the observed effects is discussed.