A measurement of the absolute neutron beam polarization produced by an optically pumped 3He neutron spin filter

被引：27

作者：

Rich, DR ^{[1
]}

Bowman, JD

Crawford, BE

Delheij, PPJ

Espy, MA

Haseyama, T

Jones, G

Keith, CD

Knudson, J

Leuschner, MB

Masaike, A

Masuda, Y

Matsuda, Y

Penttilä, SI

Pomeroy, VR

Smith, DA

Snow, WM

Szymanski, JJ

Stephenson, SL

Thompson, AK

Yuan, V

机构：

[1] Wabash Coll, Dept Phys, Crawfordsville, IN 47933 USA

[2] Indiana Univ, Bloomington, IN 47405 USA

[3] Los Alamos Natl Lab, Los Alamos, NM 87545 USA

[4] Duke Univ, Durham, NC 27708 USA

[5] Triangle Univ Nucl Lab, Durham, NC 27708 USA

[6] TRIUMF, Vancouver, BC V6T 2A3, Canada

[7] Univ Minnesota, Minneapolis, MN 55455 USA

[8] Kyoto Univ, Kyoto 60601, Japan

[9] NIST, Gaithersburg, MD 20899 USA

[10] Univ New Hampshire, Durham, NH 03824 USA

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2002年 / 481卷 / 1-3期

关键词：

neutron polarization; polarized He-3; neutron decay;

D O I：

10.1016/S0168-9002(01)01331-6

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

The capability of performing accurate absolute measurements of neutron beam polarization opens a number of exciting opportunities in fundamental neutron physics and in neutron scattering. At the LANSCE pulsed neutron source we have measured the neutron beam polarization with an absolute accuracy of 0.3% in the neutron energy range from 40 meV to 10 eV using an optically pumped polarized He-3 spin filter and a relative transmission measurement technique. He-3 was polarized using the Rb spin-exchange method. We describe the measurement technique, present our results, and discuss some of the systematic effects associated with the method. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：431 / 453

页数：23

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