A wide angle neutron spin filter system using polarized 3He

被引：17
|
作者：
Fu, C. B. [1 ,2 ]
Gentile, T. R. [1 ]
Jones, G. L. [3 ]
Chen, W. C. [1 ,5 ]
Erwin, R. [1 ]
Watson, S. [1 ]
Broholm, C. [1 ,4 ]
Rodriguez-Rivera, J. A. [1 ,5 ]
Scherschligt, J. [1 ]
机构：
[1] Natl Inst Stand & Technol, Gaithersburg, MD 20899 USA
[2] Indiana Univ, Bloomington, IN 47408 USA
[3] Hamilton Coll, Dept Phys, Clinton, NY 13323 USA
[4] Johns Hopkins Univ, Baltimore, MD 21218 USA
[5] Univ Maryland, College Pk, MD 20742 USA
来源：
PHYSICA B-CONDENSED MATTER | 2011年 / 406卷 / 12期
关键词：
Polarized He-3; He-3 neutron spin filter; Wide angle He-3 cell; RELAXATION; PRESSURES;
D O I：
10.1016/j.physb.2010.10.002
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
Polarized He-3 neutron spin filters can operate over a wide neutron energy range and provide a large angular acceptance. A compact He-3 neutron spin filter system has been developed for the Multi-Axis Crystal Spectrometer at the National Institute of Standards and Technology (NIST) Center for Neutron Research. Sealed He-3 cells, polarized by spin-exchange optical pumping, are used as polarizer and analyzer. The polarization of the neutrons incident on the sample is inverted by flipping the polarization of the He-3 gas in the polarizer, with only a small effect on the analyzer cells. The cell fabrication process, He-3 spin flipper, and the holding magnetic field are discussed and we present the results of a first on-line test. (C) 2010 Elsevier B.V. All rights reserved.
引用
收藏
页码：2419 / 2423
页数：5
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