Axial long and short range uniformity of plasma in a wall-stabilized arc

作者：Pawelec Ewa^*

来源：Physica Scripta, 2014, T161: 014058.

DOI：10.1088/0031-8949/2014/T161/014058

• plasma diagnostics
• arc plasma
• demixing effect
• plasma uniformity

In this work, an axial uniformity of plasma in a wall-stabilized arc is studied by using the measurements of plasma temperature and electron density. The uniformity is considered both in the long range (as the differences between results of the measurements performed between different arc segments) and in the short range (as the differences between results of the measurements performed in the same gap between segments), but closer or further from the segment wall. The measurements were performed in argon, nitrogen and in argon-helium mixture and are compared to the theoretical model of the arc (calculations were performed for the pure argon plasma). The results and their differences between the cases of pure gases and in the mixtures are discussed.

• 出版日期2014-5