Neutron Polarization Measurements Using the Pulsed-Polarized Proton and Deuteron Beams at TUNL

Nanosecond wide pulses of polarized protons or deuterons at a repetition rate of 4 MHz are now routinely available for studying interactions involving outgoing neutrons. Up to 90 nA of protons and 200 nA of deuterons have been observed on target. Our first experiments involved the determination of the analyzing power Ay(θ) for a few (p,n) and (d,n) reactions using conventional neutron time-of-flight detection. A major program for observing polarization effects in neutron elastic scattering has been initiated. The source of polarized neutrons for this program is the 2H(d,n) 3He reaction which yields a neutron beam having 90% of the polarization of the incident deuterons.