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Polarized 3He spin filters in neutron scattering

被引：44
作者：
Gentile, TR
Babcock, E
Borchers, JA
Chen, WC
Hussey, D
Jones, GL
Lee, WT
Majkzrak, CF
O'Donovan, KV
Snow, WM
Tong, X
Velthuis, SGET
Walker, TG
Yan, H
机构：
[1] Natl Inst Stand & Technol, Gaithersburg, MD 20899 USA
[2] Univ Wisconsin, Madison, WI 53706 USA
[3] Indiana Univ, Bloomington, IN 47408 USA
[4] Hamilton Coll, Clinton, NY 13323 USA
[5] Spallat Neutron Source, Oak Ridge, TN USA
[6] Univ Maryland, College Pk, MD 20742 USA
[7] Argonne Natl Lab, Argonne, IL 60439 USA
来源：
PHYSICA B-CONDENSED MATTER | 2005年 / 356卷 / 1-4期
关键词：
helium; neutron; optical pumping; polarization; spin filter; NUCLEAR-POLARIZATION; GAS; REFLECTOMETRY; EXCHANGE;
D O I：
10.1016/j.physb.2004.10.056
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
We report progress in the development and application of neutron spin filters based on transmission through polarized He-3 gas. Tests and application of these devices are underway at the National Institute of Standards and Technology (NIST) Center for Neutron Research (NCNR) and the Intense Pulsed Neutron Source (IPNS). The results of application to polarization analysis for diffuse reflectometry is discussed, along with an example of the issues in choosing the flipping ratio for such applications. The status of our development of polarized gas production using both spin-exchange (SEOP) and metastability-exchange (MEOP) optical pumping will be presented. For SEOP, we currently obtain 70-75% He-3 polarization in cells up to 500cm(3) in volume. (C) 2004 Elsevier B.V. All rights reserved.
引用
收藏
页码：96 / 102
页数：7
相关论文
共 34 条
[1]   Hybrid spin-exchange optical pumping of 3He -: art. no. 123003 [J].
Babcock, E ;
Nelson, I ;
Kadlecek, S ;
Driehuys, B ;
Anderson, LW ;
Hersman, FW ;
Walker, TG .
PHYSICAL REVIEW LETTERS, 2003, 91 (12)
[2]   Polarization of 3He by spin exchange with optically pumped Rb and K vapors [J].
Baranga, ABA ;
Appelt, S ;
Romalis, MV ;
Erickson, CJ ;
Young, AR ;
Cates, GD ;
Happer, W .
PHYSICAL REVIEW LETTERS, 1998, 80 (13) :2801-2804
[3]   Spin-exchange and spin-destruction rates for the 3He-Na system -: art. no. 062705 [J].
Borel, PI ;
Sogaard, LV ;
Svendsen, WE ;
Andersen, N .
PHYSICAL REVIEW A, 2003, 67 (06)
[4]   NUCLEAR POLARIZATION IN HE-3 GAS INDUCED BY OPTICAL PUMPING AND DIPOLAR EXCHANGE [J].
BOUCHIAT, MA ;
CARVER, TR ;
VARNUM, CM .
PHYSICAL REVIEW LETTERS, 1960, 5 (08) :373-375
[5]   Frequency-narrowed external-cavity diode-laser-array bar [J].
Chann, B ;
Nelson, I ;
Walker, TG .
OPTICS LETTERS, 2000, 25 (18) :1352-1354
[6]   Measurements of 3He spin-exchange rates -: art. no. 032703 [J].
Chann, B ;
Babcock, E ;
Anderson, LW ;
Walker, TG .
PHYSICAL REVIEW A, 2002, 66 (03)
[7]   Production of highly polarized 3He using spectrally narrowed diode laser array bars [J].
Chann, B ;
Babcock, E ;
Anderson, LW ;
Walker, TG ;
Chen, WC ;
Smith, TB ;
Thompson, AK ;
Gentile, TR .
JOURNAL OF APPLIED PHYSICS, 2003, 94 (10) :6908-6914
[8]   Polarized neutron reflectometry of a patterned magnetic film with a 3He analyzer and a position-sensitive detector [J].
Chen, WC ;
Gentile, TR ;
O'Donovan, KV ;
Borchers, JA ;
Majkrzak, CF .
REVIEW OF SCIENTIFIC INSTRUMENTS, 2004, 75 (10) :3256-3263
[9]   Polarized 3He analyzers for neutron reflectometry [J].
Chen, WC ;
Bailey, C ;
Borchers, JA ;
Farrow, RFC ;
Gentile, TR ;
Hussey, D ;
Majkrzak, CF ;
O'Donovan, KV ;
Remmes, N ;
Snow, WM ;
Thompson, AK .
PHYSICA B-CONDENSED MATTER, 2003, 335 (1-4) :196-200
[10]   ENHANCEMENT OF FERROMAGNETIC SHIELDING AGAINST LOW-FREQUENCY MAGNETIC FIELDS [J].
COHEN, D .
APPLIED PHYSICS LETTERS, 1967, 10 (03) :67-&
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