Non-local electron energy probability function in a plasma expanding along a magnetic nozzle

被引：32

作者：

Boswell, Rod W. ^{[1
]}

Takahashi, Kazunori ^{[2
]}

Charles, Christine ^{[1
]}

Kaganovich, Igor D. ^{[3
]}

机构：

[1] Australian Natl Univ, Res Sch Phys & Engn, Space Plasma Power & Prop Lab, Bldg 60,Mills Rd, Canberra, ACT 2601, Australia

[2] Tohoku Univ, Dept Elect Engn, Sendai, Miyagi, Japan

[3] Princeton Univ, Princeton Plasma Phys Lab, Princeton, NJ 08543 USA

来源：

FRONTIERS IN PHYSICS | 2015年 / 3卷 / MAR期

关键词：

low-temperature plasmas; plasma expansion; electron energy probability function; non-local effect;

D O I：

10.3389/fphy.2015.00014

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Electron energy probability functions (eepfs) have been measured along the axis of a low pressure plasma expanding in a magnetic nozzle. The eepf at the maximum magnetic field of the nozzle shows a depleted tail commencing at an energy corresponding to the measured potential drop in the magnetic nozzle. The eepfs measured along the axis demonstrate that the sum of potential and kinetic energies of the electrons is conserved thus confirming the validity of non-local approach to kinetics of the electron dynamics of a low-pressure plasma expanding in a magnetic nozzle.

引用

页数：5

共 14 条

[1] Ambipolar acceleration of ions in a magnetic nozzle [J].