In situ SEOP polarised 3He neutron spin filter for incident beam polarisation and polarisation analysis on neutron scattering instruments

被引：34

作者：

Boag, S. ^{[1
]}

Babcock, E. ^{[2
,3
]}

Andersen, K. H. ^{[2
]}

Becker, M. ^{[2
]}

Charlton, T. R. ^{[1
]}

Chen, W. C. ^{[4
]}

Dalgliesh, R. M. ^{[1
]}

Elmore, S. D. ^{[1
]}

Frost, C. D. ^{[1
]}

Gentile, T. R. ^{[4
]}

Lopez Anton, R. ^{[1
,5
]}

Parnell, S. R. ^{[6
]}

Petoukhov, A. K. ^{[2
]}

Skoda, M. W. A. ^{[1
]}

Soldner, T. ^{[2
]}

机构：

[1] Rutherford Appleton Lab, ISIS, Didcot OX11 0QX, Oxon, England

[2] Inst Max Von Laue Paul Langevin, F-38042 Grenoble 9, France

[3] Julich Ctr Neutron Sci FRM II, D-85747 Garching, Germany

[4] NIST, Gaithersburg, MD 20899 USA

[5] Univ Zaragoza, CSIC, ICMA, E-50009 Zaragoza, Spain

[6] Univ Sheffield, Acad Unit Radiol, Sheffield S10 2JF, S Yorkshire, England

来源：

PHYSICA B-CONDENSED MATTER | 2009年 / 404卷 / 17期

基金：

英国科学技术设施理事会;

关键词：

Polarised neutrons; Neutron spin filter; In situ pumping; CELLS;

D O I：

10.1016/j.physb.2009.06.039

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We discuss the development and characterisation of a new in situ spin exchange optical pumping (SEOP) based He-3 neutron spin filter polarisation device. We present results from a recent test of the prototype system developed with the Institut Laue-Langevin. The polariser was installed on the polarised reflectometer CRISP at ISIS in the analyser position. The He-3 was pumped continuously in situ on the beamline. The system also integrated a He-3 adiabatic fast passage spin flipper that allowed reversal of the He-3 and therefore neutron polarisation state, allowing for measurement of all four polarisation cross-sections. The system was run for a number of days reaching a He-3 polarisation of 63%. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：2659 / 2662

页数：4

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