A comparison of 3He polarization determined by neutron scattering and NMR methods

L. J. Chang, Chih Hao Lee, Hui Chia Su, A. Ioffe, K. Bussmann, S. R. Parnell, S. Boag

Research output: Contribution to journalArticlepeer-review

Abstract

3He was polarized by the spin-exchange optical pumping (SEOP) method. The 3He polarization measured by neutrons was compared to the value obtained by cross calibration with a thermal water signal via nuclear magnetic resonance (NMR). The neutron scattering experiments were performed at a three-dimensional neutron depolarization spectrometer (NDS) based on the design of the instrument labeled LAP-ND of FRJ-2, Germany, constructed and commissioned at the W-3 port of the Tsing Hua Open-Pool Reactor (THOR), Taiwan. The two methods show a reasonable consistency regarding the 3He polarization. This suggests that the NMR method is convenient and reliable for testing the 3He polarization before neutron scattering experiments are performed.

Original languageEnglish
Pages (from-to)159-165
Number of pages7
JournalChinese Journal of Physics
Volume47
Issue number2
Publication statusPublished - 2009 Apr

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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