Progress in Polarized 3He Ion Source at RCNP
- Department of Clinical Technology, Kobe Tokiwa College, Ohtani-cho 2-6-2, Nagata-ku, Kobe 653-0083 (Japan)
- Department of Physics, Graduate School of Science, Osaka University, 1-1, Machikaneyama, Toyonaka, Osaka 560-0043 (Japan)
- Department of Physics, Tokyo Institute of Technology, O-okayama 2-12-1, Tokyo 152-8551 (Japan)
- Research Center for Nuclear Physics, Osaka University, Mihogaoka 10-1, Ibaraki, Osaka 567-0047 (Japan)
- Department of Chemistry, Niigata University, Nino-cho 8050, Niigata 950-2181 (Japan)
- Joint Institute for Nuclear Research, Dubna, RU-141980, Moscow region (Russian Federation)
A long history on the polarized 3He ion source developed at RCNP is presented. We started with an 'OPPIS' (Optical Pumping Polarized Ion Source) and later found the fundamental difficulties in the OPPIS. To overcome them an 'EPPIS' (Electron Pumping Polarized Ion Source) was proposed and its validity was experimentally proven. However, a serious technical disadvantage was also found in the EPPIS. To avoid this disadvantage we proposed a new concept, 'SEPIS' (Spin Exchange Polarized Ion Source), which uses an enhanced spin-exchange cross section theoretically expected at low 3He+ incident energies in the 3He+ + Rb system. Next, we describe the present status of the SEPIS development: construction of a bench test device allowing the measurements of not only the spin-exchange cross sections {sigma}se but also the electron capture cross sections {sigma}ec for the 3He+ + Rb system. The latest experimental data on {sigma}ec are presented and compared with other previous experimental data and the theoretical calculations.Finally, a design study of the SEPIS for practical use in nuclear (cyclotron) and particle physics (synchrotron) is shortly mentioned.
- OSTI ID:
- 21061849
- Journal Information:
- AIP Conference Proceedings, Vol. 915, Issue 1; Conference: 17. international spin physics symposium, Kyoto (Japan), 2-7 Oct 2006; Other Information: DOI: 10.1063/1.2750944; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
- Country of Publication:
- United States
- Language:
- English
Similar Records
RCNP Project on Polarized {sup 3}He Ion Sources - From Optical Pumping to Cryogenic Method
RCNP polarized {sup 3}He ion source