Pressure Dependent Characteristics of an Ork Ridge Type Duoplasmatron Ion Source I. Discharge Characteristics
- 1 June 1967
- journal article
- Published by IOP Publishing in Japanese Journal of Applied Physics
- Vol. 6 (6)
- https://doi.org/10.1143/jjap.6.758
Abstract
The pressure dependence of discharge characteristics of an Ork Ridge type duoplasmatron ion source was studied with a Langmuir probe. It was found that the pressure dependent characteristics relate to the radial component of the magnetic field near the tip of the intermediate electrode. A fire ball of dense plasma is built up at the neck of the intermediate electrode and there a potential difference between the fire ball and anode. It was observed that the potential difference varied from 17 V to 50 V with variation in hydrogen gas pressure. The mean energy of electrons emerging from the anode aperture was measured by an A-C thermocouple. It amounts to 51 eV at a gas pressure of 0.06 Torr. The mean energy of electrons corresponds to the potential difference between the fire ball and anode.Keywords
This publication has 5 references indexed in Scilit:
- Mean Electron Energy of a Plasma Emerging from a Duoplasmatron Ion SourceJapanese Journal of Applied Physics, 1966
- Some plasma-physical aspects of mono- and duo-plasmatron ion sourcesNuclear Instruments and Methods, 1965
- Enhancement of Plasma Density in an Arc DischargeJournal of Applied Physics, 1965
- Duoplasmatron as a Vacuum Ultraviolet Light SourceReview of Scientific Instruments, 1962
- A source for the production of large dc ion currentsNuclear Instruments and Methods, 1961