Development of 3He polarized neutron spin filters at KEK

被引：14

作者：

Ino, T

Muto, S

Masuda, Y

Kim, G

Skoy, VR

机构：

[1] KEK, High Energy Accelerator Res Org, Inst Mat Struct Sci, Neutron Sci Lab, Tsukuba, Ibaraki 3050801, Japan

[2] Kyungpook Natl Univ, Dept Phys, Taegu 702701, South Korea

[3] Joint Inst Nucl Res, Frank Lab Neutron Phys, Dubna 141980, Moscow Region, Russia

来源：

PHYSICA B-CONDENSED MATTER | 2005年 / 356卷 / 1-4期

关键词：

polarized neutron; polarized He-3; neutron spin filter; spin-exchange optical pumping;

D O I：

10.1016/j.physb.2004.10.058

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Development of neutron spin filters based on polarized gaseous He-3 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 200h have been observed for quartz glass cells with 3He pressures of 3atm. Using a pulsed neutron beam, polarizations of He-3 were measured for a quartz glass cell and a sapphire cell with He-3 pressures of 3 atm to be 54+/-2 % and 63+/-1 %, respectively. (C) 2004 Published by Elsevier B.V.

引用

页码：109 / 113

页数：5

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