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

W. T. Lee; X. Tong; J. Pierce; M. Fleenor; A. Ismaili; J. L. Robertson; W. C. Chen; T. R. Gentile; A. Hailemariam; R. Goyette; A. Parizzi; V. Lauter; F. Klose; H. Kaiser; C. Lavelle; D. V. Baxter; G. L. Jones; J. Wexler; L. McCollum

doi:10.1088/1742-6596/251/1/012086

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

W. T. Lee
, X. Tong
, J. Pierce
, M. Fleenor
, A. Ismaili
, J. L. Robertson
, W. C. Chen
, T. R. Gentile
, A. Hailemariam
, R. Goyette
, A. Parizzi
, V. Lauter
, F. Klose
, H. Kaiser
, C. Lavelle
, D. V. Baxter
, G. L. Jones
, J. Wexler
, L. McCollum

Research output: Contribution to journal › Article › peer-review

6 Scopus citations

Abstract

We report here the construction and neutron transmission test results of an in-situ polarized ³He-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 ³He nuclei of a cell of ³He gas. Polarized neutrons scattered from the sample are intercepted by the polarized ³He 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 ³He gas is continuously polarized in-situ on the instrument. Neutron transmission measurements showed that 73% ³He polarization was reached in this setup.

Original language	English
Article number	012086
Journal	Journal of Physics: Conference Series
Volume	251
Issue number	1
DOIs	https://doi.org/10.1088/1742-6596/251/1/012086
State	Published - 2010

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Lee, W. T., Tong, X., Pierce, J., Fleenor, M., Ismaili, A., Robertson, J. L., Chen, W. C., Gentile, T. R., Hailemariam, A., Goyette, 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 ³He-based neutron polarization analyzer for SNS magnetism reflectometer. Journal of Physics: Conference Series, 251(1), Article 012086. https://doi.org/10.1088/1742-6596/251/1/012086

@article{2598e63fc36e4930b3bdb41f42813ac2,

title = "In-situ polarized 3He-based neutron polarization analyzer for SNS magnetism reflectometer",

abstract = "We report here the construction and neutron transmission test results of an in-situ polarized 3He-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 3He nuclei of a cell of 3He gas. Polarized neutrons scattered from the sample are intercepted by the polarized 3He 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 3He gas is continuously polarized in-situ on the instrument. Neutron transmission measurements showed that 73\% 3He polarization was reached in this setup.",

author = "Lee, \{W. T.\} and X. Tong and J. Pierce and M. Fleenor and A. Ismaili and Robertson, \{J. L.\} and Chen, \{W. C.\} and Gentile, \{T. R.\} and A. Hailemariam and R. Goyette and A. Parizzi and V. Lauter and F. Klose and H. Kaiser and C. Lavelle and Baxter, \{D. V.\} and Jones, \{G. L.\} and J. Wexler and L. McCollum",

year = "2010",

doi = "10.1088/1742-6596/251/1/012086",

language = "English",

volume = "251",

journal = "Journal of Physics: Conference Series",

issn = "1742-6588",

number = "1",

}

Lee, WT, Tong, X, Pierce, J, Fleenor, M, Ismaili, A, Robertson, JL, Chen, WC, Gentile, TR, Hailemariam, A, Goyette, R, Parizzi, A , Lauter, V, Klose, F, Kaiser, H, Lavelle, C, Baxter, DV, Jones, GL, Wexler, J & McCollum, L 2010, 'In-situ polarized ³He-based neutron polarization analyzer for SNS magnetism reflectometer', Journal of Physics: Conference Series, vol. 251, no. 1, 012086. https://doi.org/10.1088/1742-6596/251/1/012086

TY - JOUR

T1 - In-situ polarized 3He-based neutron polarization analyzer for SNS magnetism reflectometer

AU - Lee, W. T.

AU - Tong, X.

AU - Pierce, J.

AU - Fleenor, M.

AU - Ismaili, A.

AU - Robertson, J. L.

AU - Chen, W. C.

AU - Gentile, T. R.

AU - Hailemariam, A.

AU - Goyette, R.

AU - Parizzi, A.

AU - Lauter, V.

AU - Klose, F.

AU - Kaiser, H.

AU - Lavelle, C.

AU - Baxter, D. V.

AU - Jones, G. L.

AU - Wexler, J.

AU - McCollum, L.

PY - 2010

Y1 - 2010

N2 - We report here the construction and neutron transmission test results of an in-situ polarized 3He-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 3He nuclei of a cell of 3He gas. Polarized neutrons scattered from the sample are intercepted by the polarized 3He 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 3He gas is continuously polarized in-situ on the instrument. Neutron transmission measurements showed that 73% 3He polarization was reached in this setup.

AB - We report here the construction and neutron transmission test results of an in-situ polarized 3He-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 3He nuclei of a cell of 3He gas. Polarized neutrons scattered from the sample are intercepted by the polarized 3He 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 3He gas is continuously polarized in-situ on the instrument. Neutron transmission measurements showed that 73% 3He polarization was reached in this setup.

UR - https://www.scopus.com/pages/publications/79953758352

U2 - 10.1088/1742-6596/251/1/012086

DO - 10.1088/1742-6596/251/1/012086

M3 - Article

AN - SCOPUS:79953758352

SN - 1742-6588

VL - 251

JO - Journal of Physics: Conference Series

JF - Journal of Physics: Conference Series

IS - 1

M1 - 012086

ER -

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

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