Abstract
Measurements of the angular distribution and polarization of neutrons from the reaction have been made for mean bombarding energies of 2.70 and 3.55 MeV. Polarizations were measured using a gas scintillator, and cross sections were determined using a liquid scintillator employing pulse-shape discrimination. Contributions from the three-body breakup channel were removed by assuming these neutrons to be unpolarized and to have a statistical energy distribution in the high-energy portion of the neutron spectrum. The angular distribution of neutrons from the reaction exhibits a broad peak in the vicinity of . The neutron polarization was found to be negative at all angles investigated, and reaches a minimum value of -0.30 at , MeV. Excitation functions for the cross section were measured at laboratory angles of 0 and 40° for energies between 0.7 and 3.8 MeV. The reaction data can be reproduced qualitatively with a simple two-nucleon-transfer distorted-wave Born-approximation calculation, but the - potential parameters used do not reproduce published elastic scattering data at somewhat higher energy.
- Received 8 February 1971
DOI:https://doi.org/10.1103/PhysRevC.3.2171
©1971 American Physical Society