Production of highly charged ion beams from electron cyclotron resonance ion sources (invited)
- Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, California 94720 (United States)
Electron cyclotron resonance ion source (ECRIS) development has progressed with multiple-frequency plasma heating, higher mirror magnetic fields, and better technique to provide extra cold electrons. Such techniques greatly enhance the production of highly charged ions from ECRISs. So far at continuous wave (CW) mode operation, up to 300 e{mu}A of O{sup 7+} and 1.15 emA of O{sup 6+}, more than 100 e{mu}A of intermediate heavy ions for charge states up to Ar{sup 13+}, Ca{sup 13+}, Fe{sup 13+}, Co{sup 14+}, and Kr{sup 18+}, and tens of e{mu}A of heavy ions with charge states to Kr{sup 26+}, Xe{sup 28+}, Au{sup 35+}, Bi{sup 34+}, and U{sup 34+} were produced from ECRISs. At an intensity of at least 1 e{mu}A, the maximum charge state available for the heavy ions are Xe{sup 36+}, Au{sup 46+}, Bi{sup 47+}, and U{sup 48+}. An order of magnitude enhancement for fully stripped argon ions (I{ge}60enA) were also achieved. This article will review the ECR ion source progress and discuss key requirement for ECRISs to produce the highly charged ion beams. {copyright} {ital 1998 American Institute of Physics.}
- OSTI ID:
- 591866
- Report Number(s):
- CONF-980145-; ISSN 0034-6748; TRN: 98:004843
- Journal Information:
- Review of Scientific Instruments, Vol. 69, Issue 2; Conference: 7. international conference on ion sources, Shirahama (Japan), 26-27 Jan 1998; Other Information: PBD: Feb 1998
- Country of Publication:
- United States
- Language:
- English
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