Probe Contamination in a Hydrogen Plasma†
- 1 November 1963
- journal article
- electronics section
- Published by Taylor & Francis in Journal of Electronics and Control
- Vol. 15 (5) , 437-445
- https://doi.org/10.1080/00207216308937594
Abstract
By making use of operational differentiation, the method of time differentiation has been applied successfully to obtain second derivatives of Langmuir probe i-V characteristics in a hydrogen plasma. It is demonstrated that under certain conditions contamination of the probe by cathode material may result in an additional peak in the electron energy distribution. This is most pronounced when a well-defined group of fast electrons (>6ev) is present and may be attributed to the ionization of barium in the vicinity of the probe surface.Keywords
This publication has 4 references indexed in Scilit:
- Spectroscopic Detection of the Onset of Plasma Oscillations in a Gas DischargeProceedings of the Physical Society, 1962
- Pulse Technique for Probe Measurements in Gas DischargesJournal of Applied Physics, 1959
- Reliability of Probe Measurements in Hot Cathode Gas DiodesJournal of Applied Physics, 1952
- The Use of Radioactive Isotopes in a Study of Evaporation from Thermionic CathodesJournal of Applied Physics, 1952