PROBE MEASUREMENTS OF THE ELECTRON CONVECTIVE VELOCITY IN AXISYMMETRIC LOW-TEMPERATURE HELIUM PLASMAS

被引：14

作者：

MEZENTSEV, AP

MUSTAFAEV, AS

FEDOROV, VL

机构：

[1] Plekhanov Mining Inst, Russia

来源：

JOURNAL OF PHYSICS D-APPLIED PHYSICS | 1988年 / 21卷 / 09期

关键词：

Electrons - Helium - Mathematical Techniques--Polynomials - Plasmas--Probes;

D O I：

10.1088/0022-3727/21/9/024

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The electron velocity distribution function has been measured using a flat one-sided probe at the axis of a plasma gap in a helium discharge positive column for the pressure range 0.2-1.0 Torr and discharge currents 50-500 mA. Moments of the electron velocity distribution function and hence the electron convective velocity for different discharge regimes are determined. The convective velocity is shown to be determined according to discharge conditions either by a pair of elastic electron-atom collisions or by collective processes of electron collisions.

引用

页码：1464 / 1466

页数：3