Nonmonotonic radial distribution of excited atoms in a positive column of pulsed direct currect discharges in helium

被引：8

作者：

Barnat, E. V. ^{[1
]}

Kolobov, V. I. ^{[2
]}

机构：

[1] Sandia Natl Labs, Albuquerque, NM 87185 USA

[2] CFD Res Corp, Huntsville, AL 35805 USA

来源：

APPLIED PHYSICS LETTERS | 2013年 / 102卷 / 03期

关键词：

SIMULATION;

D O I：

10.1063/1.4788689

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Nonmonotonic radial distributions of excited helium atoms have been experimentally observed in a positive column of pulsed helium discharges using planar laser induced fluorescence. Computational analysis of the discharge dynamics with a fluid plasma model confirms the experimental observations over a range of pressures and currents. The observed effect is attributed to the peculiarities of electron population-depopulation of the excited states during the "dynamic discharge" conditions with strong modulations of the electric field maintaining the plasma. (C) 2013 American Institute of Physics. [http://dx.doi.org/10.1063/1.4788689]

引用

页数：4

共 6 条

[1] Nonmonotonic excitation rates in argon positive column [J].