Neutron polarimetry using a polarized 3He cell for the aCORN experiment
Neutron polarimetry using a polarized 3He cell for the aCORN experiment
复制标题
使用极化 3He 电池进行 aCORN 实验的中子旋光测定
DOI:
10.1016/j.nima.2020.164862
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发表时间:
2021
期刊:
影响因子:
--
通讯作者:
Wietfeldt, F.E.
中科院分区:
文献类型:
--
作者:
Schafer, B.C.;Byron, W.A.;Chen, W.C.;Collett, B.;Dewey, M.S.;Gentile, T.R.;Hassan, Md.T.;Jones, G.L.;Komives, A.;Wietfeldt, F.E.
The neutron polarization of the NG-C beamline at the NIST Center for Neutron Research was measured as part of the aCORN neutron beta decay experiment. Neutron transmission through a polarized 3 He spin filter cell was recorded while adiabatic fast passage (AFP) nuclear magnetic resonance (NMR) reversed the polarization direction of the 3 He in an eight-step sequence to account for drifts. The dependence of the neutron transmission on the spin filter direction was used to calculate the neutron polarization. The time dependent transmission was fit to a model which included the neutron spectrum, and 3 He polarization losses from spin relaxation and AFP-NMR. The neutron polarization averaged over the spectrum of the NG-C beam was found to be∣ P n∣≤ 4× 1 0− 4 with 90% confidence.
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DOI:
10.1016/j.nima.2018.03.055
发表时间:
2018-07-01
影响因子:
1.4
作者:
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DOI:
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1999
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2011
期刊:
Physica B: Condensed Matter
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2009
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