RCNP Project on Polarized [sup 3]He Ion Sourcese—From Optical Pumping to Cryogenic Method
Autor: | M. Tanaka, T. Inomata, Y. Takahashi, M. Fujiwara, T. Shimoda, M. Yosoi, K. Takahisa, H. Kohri, T. Ohta, C. Morisaki, T. Kunimatsu, Yu. A. Plis, G. Frossati, J. P. Didelez, Donald G. Crabb, Yelena Prok, Matt Poelker, Simonetta Liuti, Donal B. Day, Xiaochao Zheng |
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Přispěvatelé: | Institut de Physique Nucléaire d'Orsay (IPNO), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS) |
Rok vydání: | 2009 |
Předmět: |
Physics
020206 networking & telecommunications Particle accelerator 02 engineering and technology Electron [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex] Polarization (waves) 7. Clean energy Ion source Magnetic field Ion law.invention Optical pumping law 0202 electrical engineering electronic engineering information engineering 020201 artificial intelligence & image processing Atomic physics Beam (structure) |
Zdroj: | AIP Conference Proceedings The 18th International Symposium on Spin Physics (SPIN2008) The 18th International Symposium on Spin Physics (SPIN2008), Oct 2008, Charlottesville, United States. pp.859-862, ⟨10.1063/1.3215779⟩ |
DOI: | 10.1063/1.3215779 |
Popis: | International audience; A polarized 3He ion source has been developed at RCNP for intermediate and high energy spin physics. Though we started with an OPPIS (Optical Pumping Polarized Ion Source), it could not provide highly polarized 3He beam because of fundamental difficulties. Subsequently to this unhappy result, we examined novel types of the polarized 3He ion source, i.e., EPPIS (Electron Pumping Polarized Ion Source), and ECRPIS (ECR Polarized Ion Source) experimentally or theoretically, respectively. However, attainable 3He polarization degrees and beam intensities were still insufficient for practical use. A few years later, we proposed a new idea for the polarized 3He ion source, SEPIS (Spin Exchange Polarized Ion Source) which is based on enhanced spin-exchange cross sections at low incident energies for 3He++Rb, and its feasibility was experimentally examined.Recently, we started a project on polarized 3He gas generated by the brute force method with low temperature (~4 mK) and strong magnetic field (~17 T), and rapid melting of highly polarized solid 3He followed by gasification. When this project will be successful, highly polarized 3He gas will hopefully be used for a new type of the polarized 3He ion source. |
Databáze: | OpenAIRE |
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