THE CALIBRATION OF SLOW-NEUTRON POLARIZED BEAM INSTRUMENTS

A new procedure for calibrating the efficiencies of the polarisation sensitive components in slow neutron polarised beam instruments is described. The measurement of one "flipping ratio" and two "shim ratios" allows the effective polarisation, the spin flipping efficiency, and a...

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Bibliographic Details
Main Authors: Felici, R, Penfold, J, Ward, R, Williams, W
Format: Journal article
Language:English
Published: 1987
Description
Summary:A new procedure for calibrating the efficiencies of the polarisation sensitive components in slow neutron polarised beam instruments is described. The measurement of one "flipping ratio" and two "shim ratios" allows the effective polarisation, the spin flipping efficiency, and a depolarising shim efficiency to be determined unambiguously. Results of its application to the calibration of a neutron time-of-flight polarised beam reflectometer are presented. © 1987.