Light ion heating in electron cyclotron resonance ion sources
- Experimentalphysik insbes. Gaselektronik, Ruhr-Universitaet Bochum, D-44780 Bochum (Germany)
The experiments described here were performed at a 5 GHz electron-cyclotron-resonance ion source with a magnetic hexapole. The discharge was run in argon. By launching a fast magnetoacoustic wave from the high-field side (end on) we heated hydrogen ions{emdash}present in traces from the residual gas{emdash}at their fundamental ion cyclotron resonance (ICR) frequency of 2.2 MHz with 5 W only. As a consequence the currents of Ar{sup {ital q}+} ions extracted from the source were significantly increased for {ital q}{ge}5 while the currents of lower charged argon ions were decreased, indicating an enhanced plasma confinement. However, a reduction of the hydrogen content in the residual gas resulted in a reversal of the effect of ICR heating. {copyright} {ital 1996 American Institute of Physics.}
- OSTI ID:
- 279261
- Report Number(s):
- CONF-9509125-; ISSN 0034-6748; TRN: 96:021432
- Journal Information:
- Review of Scientific Instruments, Vol. 67, Issue 3; Conference: 6. international conference on ion sources, Whistler (Canada), 10-16 Sep 1995; Other Information: PBD: Mar 1996
- Country of Publication:
- United States
- Language:
- English
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