Applications of He-3 neutron spin filters at the NCNR
Type of Work
Physica B: Condensed Matter
At the NIST Center for Neutron Research (NCNR), we have applied He-3 neutron spin filters (NSFs) to the instruments where He-3 NSFs are advantageous, such as thermal triple-axis spectrometry, small-angle neutron scattering, and diffuse reflectometry. We present the status of our development and application of this method, including polarized gas production by spin-exchange optical pumping, magnetostatic cavities for storage of the polarized gas on the beam line, and nuclear magnetic resonance (NMR)-based, on-line monitoring and reversal of the He-3 polarization. We present the status of developing user-friendly interfaces incorporated into the instrument software to handle these He-3 neutron spin filters while taking data and performing data analysis. Finally we discuss the status of development of a polarization capability on the multi-axis crystal spectrometer, which requires polarization analysis over a 220 degrees angular range. (C) 2009 Elsevier B.V. All rights reserved.
Chen, W. C.; Erwin, R.; McIver III, J. W.; Watson, S.; Fu, C. B.; Gentile, T. R.; Borchers, J. A.; Lynn, J. W.; and Jones, Gordon L., "Applications of He-3 neutron spin filters at the NCNR" (2009). Hamilton Digital Commons.
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