Abstract
An experimental study has been made of neutron polarization from the reaction at 30° lab as a function of incident deuteron energy. A liquid-helium polarimeter was employed for this purpose with a 90° spin-precession solenoid. Measurements have been made in two ways, with greatest emphasis placed on the use of the backward reaction, , for a range of triton energies between 4.5 and 19.5 MeV. Equivalent c.m. conditions are obtained for , with neutrons emerging in the vicinity of 135° lab. Under these conditions, the neutron energy is near 11 MeV over a wide range of triton energies, where the analyzing power is constant and well known. Measurements were also made from the reaction directly at 30° for a range of deuteron energies between 5 and 15 MeV. The measured polarizations varied from 0.03 at 3-MeV to 0.69 at 13-MeV equivalent deuteron energy. Comparisons are made with prior data. The method also allows extraction of values of the analyzing power for neutron energies between 21 and 29 MeV at 75 and 113° lab.
- Received 2 October 1970
DOI:https://doi.org/10.1103/PhysRevC.3.1031
©1971 American Physical Society