Liquid crystal polarimetry for metastability exchange optical pumping of [superscript 3]He
Name
Milner_Liquid crystal.pdf
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1.74 MB
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Adobe PDF
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02615e7e84f194addec158efe7178901
Author(s)
Maxwell, James D
Epstein, Charles S.
Milner, Richard G
Alternative Title
Liquid crystal polarimetry for metastability exchange optical pumping of 3He
Date Issued
August 2014
Journal
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Publisher
Elsevier
Citation
Maxwell, J.D., C.S. Epstein, and R.G. Milner. “Liquid Crystal Polarimetry for Metastability Exchange Optical Pumping of [superscript 3]He.” Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 764 (2014): 215–219.
Version
Original manuscript
Abstract
We detail the design and operation of a compact, discharge light polarimeter for metastability exchange optical pumping of [superscript 3]He gas near 1 torr under a low magnetic field. The nuclear polarization of [superscript 3]He can be discerned from its electron polarization, measured via the circular polarization of 668 nm discharge light from an RF excitation. This apparatus measures the circular polarization of this very dim discharge light using a nematic liquid crystal wave retarder (LCR) and a high-gain, transimpedance amplified Si photodiode. We outline corrections required in such a measurement and discuss contributions to its systematic error.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Laboratory for Nuclear Science
Terms of Use
Creative Commons Attribution-NonCommercial-NoDerivs License
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DOI of Published Version
https://doi.org/10.1016/j.nima.2014.07.049
