Measurement of the Polarization of Thermal Neutron Beams of Mixed Velocities

Abstract
We have tried three methods of measuring the polarizations of beams of thermal neutrons reflected from magnetized mirrors. These methods were based on (a) depolarizers, (b) a current‐carrying foil (Dabbs foil), and (c) a Stern‐Gerlach magnet. The Stern‐Gerlach method appears to be the most reliable; with reasonable care it is accurate to ±1%.