A New Method for Precision Cold Neutron Polarimetry Using a (3)He Spin Filter.
We present a new method for precision measurement of the capture flux polarization of a polychromatic (white), continuous cold neutron beam, polarized by a (3)He spin filter. This method allows an in situ measurement and does not require knowledge of the neutron beam wavelength distribution. We show that a polarimetry precision of 0.1 % is possible.
Tulane University, New Orleans, LA 70118.
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Wietfeldt
National Institute of Standards and Technology, Gaithersburg, MD 20899.
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Gentile
3He spin filter; cold neutron; polarimetry