Article Title

Applications of He-3 neutron spin filters at the NCNR

Type of Work

Article

Date

9-1-2009

Journal Title

Physica B: Condensed Matter

Journal ISSN

0921-4526

Journal Volume

404

Journal Issue

17

First Page

2663

Last Page

2666

DOI

10.1016/j.physb.2009.06.040

Abstract

At the NIST Center for Neutron Research (NCNR), we have applied He-3 neutron spin filters (NSFs) to the instruments where He-3 NSFs are advantageous, such as thermal triple-axis spectrometry, small-angle neutron scattering, and diffuse reflectometry. We present the status of our development and application of this method, including polarized gas production by spin-exchange optical pumping, magnetostatic cavities for storage of the polarized gas on the beam line, and nuclear magnetic resonance (NMR)-based, on-line monitoring and reversal of the He-3 polarization. We present the status of developing user-friendly interfaces incorporated into the instrument software to handle these He-3 neutron spin filters while taking data and performing data analysis. Finally we discuss the status of development of a polarization capability on the multi-axis crystal spectrometer, which requires polarization analysis over a 220 degrees angular range. (C) 2009 Elsevier B.V. All rights reserved.

Notes

Article:
"Applications of He-3 neutron spin filters at the NCNR," Physica B-Condensed Matter 404, 2663-2666 (2009). doi: 10.1016/j.physb.2009.06.040.

Authors:
W.C. Chen, R. Erwin, J.W. McIver III, S. Watson, C.B. Fu, T.R. Gentile, J.A. Borchers, J.W. Lynn, G.L. Jones

Hamilton Areas of Study

Physics