In-situ polarized 3 He-based neutron polarization analyzer for SNS magnetism reflectometer

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dc.contributor.authorLee, WTen_AU
dc.contributor.authorTong, Xen_AU
dc.contributor.authorPierce, Jen_AU
dc.contributor.authorFleenor, Men_AU
dc.contributor.authorIsmaili, Aen_AU
dc.contributor.authorRobertson, JLen_AU
dc.contributor.authorChen, WCen_AU
dc.contributor.authorGentile, TRen_AU
dc.contributor.authorHailemariam, Aen_AU
dc.contributor.authorGoyette, Ren_AU
dc.contributor.authorParizzi, Aen_AU
dc.contributor.authorLauter, Ven_AU
dc.contributor.authorKlose, Fen_AU
dc.contributor.authorKaiser, Hen_AU
dc.contributor.authorLavelle, Cen_AU
dc.contributor.authorBaxter, DVen_AU
dc.contributor.authorJones, GLen_AU
dc.contributor.authorWexler, Jen_AU
dc.contributor.authorMcCollum, Len_AU
dc.date.accessioned2011-09-22T05:09:30Zen_AU
dc.date.available2011-09-22T05:09:30Zen_AU
dc.date.issued2010-12-16en_AU
dc.date.statistics2011-09-22en_AU
dc.description.abstractWe report here the construction and neutron transmission test results of an in-situ polarized 3 He-based neutron polarization analyzer system for the Magnetism Reflectometer at the Spallation Neutron Source, Oak Ridge National Laboratory. The analyzer uses the Spin-Exchange Optical Pumping method to polarize the 3 He nuclei of a cell of 3 He gas. Polarized neutrons scattered from the sample are intercepted by the polarized 3 He gas which strongly absorbs neutrons in one spin-state while allowing most neutrons in the other spin-state to pass through. To maintain a stable analyzing efficiency during an experiment, the 3 He gas is continuously polarized in - situ on the instrument. Neutron transmission measurements showed that 73% 3 He polarization was reached in this setup. © 2010, Insitute of Physics.en_AU
dc.identifier.articlenumber012086en_AU
dc.identifier.citationLee, W. T., Tong, X., Pierce, J., Fleenor, M., Ismaili, A., Robertson, J. L., Chen, W. C., Gentile, T. R., Hailemariam, A., Goyette, T. R., Parizzi, A., Lauter, V., Klose F., Kaiser, H., Lavelle, C., Baxter, D. V., Jones, G. L., Wexler J., & McCollum L. (2010). In-situ polarized 3 He-based neutron polarization analyzer for SNS magnetism reflectometer. Paper presented to the International Conference on Neutron Scattering 2009, 3th–7th May 2009. Knoxville, Tennessee, USA. In Journal of Physics: Conference Series, 251(1), 012086. doi:10.1088/1742-6596/251/1/012086en_AU
dc.identifier.conferenceenddate7 May 2009en_AU
dc.identifier.conferencenameInternational Conference on Neutron Scattering 2009en_AU
dc.identifier.conferenceplaceKnoxville, Tennesseeen_AU
dc.identifier.conferencestartdate3 May 2009en_AU
dc.identifier.govdoc3451en_AU
dc.identifier.issn1742-6596en_AU
dc.identifier.journaltitleJournal of Physics: Conference Seriesen_AU
dc.identifier.urihttp://dx.doi.org/10.1088/1742-6596/251/1/012086en_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/3769en_AU
dc.identifier.volume251en_AU
dc.language.isoenen_AU
dc.publisherInsitute of Physicsen_AU
dc.subjectPolarizationen_AU
dc.subjectMagnetismen_AU
dc.subjectNeutron sourcesen_AU
dc.subjectTransmissionen_AU
dc.subjectMeasuring instrumentsen_AU
dc.subjectOptical pumpingen_AU
dc.titleIn-situ polarized 3 He-based neutron polarization analyzer for SNS magnetism reflectometeren_AU
dc.typeConference Paperen_AU
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