Measurement of polarization of He-3 with mobile polarized He-3 neutron spin filter

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A mobile polarized He-3 neutron spin filter was developed for both optical pumping and transportation, and the polarization of He-3 was measured with cold neutrons of HANARO in KAERI. The progress of polarization build-up during the optical pumping of the He-3 cell was observed by adiabatic fast-passage NMR system. The He-3 cell was made of an alumino-silicate glass GE-180 with a cylindrical shape of 40 mm in diameter and 60 mm in length from KEK. A cell contained 5.74 bar.cm of He-3 gas. The whole installation after 8 h pumping was transported to the general-purpose test station of the HANARO research reactor and the polarization of He-3 was measured with cold neutrons. The measured polarization of He-3 was 0.18 +/- 0.01 by measuring the neutron transmission through the He-3 cell.
Publisher
ELSEVIER SCIENCE BV
Issue Date
2014-03
Language
English
Article Type
Article
Keywords

EXCHANGE; GAS

Citation

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, v.323, pp.87 - 90

ISSN
0168-583X
DOI
10.1016/j.nimb.2014.01.018
URI
http://hdl.handle.net/10203/188952
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