Article Title

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

Type of Work

Article

Date

4-1-2002

Journal Title

Nuclear Instruments & Methods in Physics Research Section A: Accelerators Spectrometers Detectors and Associated Equipment

Journal ISSN

0168-9002

Journal Volume

481

Journal Issue

1-3

First Page

431

Last Page

453

DOI

10.1016/S0168-9002(01)01331-6

Abstract

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.

Notes

Article:
"A measurement of the absolute neutron beam polarization produced by an optically pumped He-3 neutron spin filter," Nuclear Instruments & Methods in Physics Research Section A-Accelerators Spectrometers Detectors and Associated Equipment 481, 431-453 (2002). doi: 10.1016/S0168-9002(01)01331-6.

Authors:
D.R. Rich, J.D. Bowman, B.E. Crawford, P.P.J. Delhej, M.A. Espy, T. Haseyama, G. Jones, C.D. Keith, J. Knudson, M.B. Leuschner, A. Masaike, Y. Masuda, Y. Matsuda, S.I. Penttilä, V.R. Pomeroy, D.A. Smith, W.M. Snow, J.J. Szymanski, S.L. Stephenson, A.K. Thompson, V. Yuan

Hamilton Areas of Study

Physics