%0 Journal Article
%T A measurement of the absolute neutron beam polarization produced by an optically-pumped 3He spin filter
%A D. R. Rich
%A J. D. Bowman
%A B. E. Crawford
%A P. P. J. Delheij
%A M. A. Espy
%A T. Haseyama
%A G. Jones
%A C. D. Keith
%A J. Knudson
%A M. B. Leuschner
%A A. Masaike
%A Y. Masuda
%A Y. Matsuda
%A S. I. Penttila
%A V. R. Pomeroy
%A D. A. Smith
%A W. M. Snow
%A S. L. Stephenson
%A A. K. Thompson
%A V. Yuan
%J Physics
%D 1999
%I arXiv
%X The capability of performing accurate 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 absolute accuracy of 0.3% in the neutron energy range from 40 meV to 10 eV using an optically-pumped polarized 3He spin filter and a relative transmission measurement technique. 3He 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.
%U http://arxiv.org/abs/physics/9908050v1