Development of 3He polarized neutron spin filters at KEK

Development of 3He polarized neutron spin filters at KEK

Development of neutron spin filters based on polarized gaseous 3He is underway at KEK. Spin-exchange optical pumping is employed to polarized 3He nuclei. Quartz glass cells and sapphire cells are studied as 3He containers. Spin relaxation times of more than 200 h have been observed for quartz glass...

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Veröffentlicht in:Physica. B, Condensed matter Condensed matter, 2005-02, Vol.356 (1), p.109-113
Hauptverfasser: Ino, Takashi, Muto, Suguru, Masuda, Yasuhiro, Kim, Guinyun, Skoy, Vadim R.
Format: Artikel
Sprache:eng
Schlagworte:
Neutron spin filter
Polarized 3He
Polarized neutron
Spin-exchange optical pumping
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Zusammenfassung:Development of neutron spin filters based on polarized gaseous 3He is underway at KEK. Spin-exchange optical pumping is employed to polarized 3He nuclei. Quartz glass cells and sapphire cells are studied as 3He containers. Spin relaxation times of more than 200 h have been observed for quartz glass cells with 3He pressures of 3 atm. Using a pulsed neutron beam, polarizations of 3He were measured for a quartz glass cell and a sapphire cell with 3He pressures of 3 atm to be 54±2% and 63±1%, respectively.
ISSN:0921-4526
DOI:10.1016/j.physb.2004.10.058