Open AccessProbe characteristics of probes from different materials in glow discharge in helium
Author(s) -
E. I. Prokhorova,
A. A. Platonov,
В. С. Игнахин,
А. И. Назаров
Publication year - 2019
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1370/1/012024
Subject(s) - plasma , glow discharge , helium , plasma diagnostics , electron , materials science , atomic physics , particle (ecology) , plasma parameters , physics , nuclear physics , oceanography , geology
Dust plasma is of particular interest due to the wide technological application and extraordinary properties. Probe method is often used for plasma diagnostics [1, 2]. At the same time, a probe is similar to a dust particle and there are emission streams on its surface, which make corrections to determination of plasma parameters. Despite essential development of the probe theory, when calculating plasma parameters for experimentally received volt-ampere characteristics emission of electrons is not considered, in many respects because of serious complication of the mathematical apparatus. The authors present the probe characteristics of probes from different materials in glow discharge in helium. The analysis of the chemical composition of the probe material is made. It has been shown experimentally that the material of the probes and the state of their surface (degree of roughness) have practically no effect on the results of probe measurements.