Techniques for enhancing the performance of high charge state ECR ion sources
- Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California, 94720 (United States)
Electron Cyclotron Resonance ion source (ECRIS), which produces singly to highly charged ions, is widely used in heavy ion accelerators and is finding applications in industry. It has progressed significantly in recent years thanks to a few techniques, such as multiple-frequency plasma heating, higher mirror magnetic fields and a better cold electron donor. These techniques greatly enhance the production of highly charged ions. More than 1 emA of He{sup 2+} and O{sup 6+}, hundreds of e{mu}A of O{sup 7+}, Ne{sup 8+}, Ar{sup 12+}, more than 100 e{mu}A of intermediate heavy ions with charge states up to Ne{sup 9+}, Ar{sup 13+}, Ca{sup 13+}, Fe{sup 13+}, Co{sup 14+} and Kr{sup 18+}, tens of e{mu}A of heavy ions with charge states up to Xe{sup 28+}, Au{sup 35+}, Bi{sup 34+} and U{sup 34+} were produced at cw mode operation. At an intensity of about 1 e{mu}A, the charge states for the heavy ions increased up to Xe{sup 36+}, Au{sup 46+}, Bi{sup 47+} and U{sup 48+}. More than an order of magnitude enhancement of fully stripped argon ions was achieved (I{ge}0.1&hthinsp;e{mu}A). Higher charge state ions up to Kr{sup 35+}, Xe{sup 46+} and U{sup 64+} at low intensities were produced for the first time from an ECRIS. {copyright} {ital 1999 American Institute of Physics.}
- Research Organization:
- Lawrence Berkeley National Laboratory
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC03-76SF00098
- OSTI ID:
- 689919
- Report Number(s):
- CONF-981122--
- Journal Information:
- AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 475; ISSN APCPCS; ISSN 0094-243X
- Country of Publication:
- United States
- Language:
- English
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