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

Frontiers in Physics

Takahashi, Kazunori¹  Kaganovich, Igor D.²  Charles, Christine³  Boswell, Rod W.³ 

[1] Department of Electrical Engineering, Tohoku University, Sendai, Japan;Princeton Plasma Physics Laboratory, Princeton University, Princeton, NJ, USA;Space Plasma, Power and Propulsion Laboratory, Research School of Physics and Engineering, The Australian National University, Canberra, ACT, Australia

关键词: low-temperature plasmas;    Plasma expansion;    Electron energy probability function;    Non-local effect;    double layers;   

DOI  :  10.3389/fphy.2015.00014

学科分类：物理（综合）

来源: Frontiers

【 摘 要 】

Electron energy probability functions (eepfs) have been measured along the axis of 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 potential and kinetic energies of the electrons are conserved and confirm the non-local collisionless kinetics of the electron dynamics.

【 授权许可】

CC BY