Accession Number:

AD0734876

Title:

Scattering of Polarized 3 MeV Neutrons from 3He,

Descriptive Note:

Corporate Author:

BALLISTIC RESEARCH LABS ABERDEEN PROVING GROUND MD

Report Date:

1971-11-01

Pagination or Media Count:

23.0

Abstract:

Partially polarized 3 MeV neutrons have been scattered from 3He contained in a high-pressure gaseous scintillation cell. The resulting asymmetry in the elastic scattering was determined for seven scattering angles from 40 degrees to 120 degrees lab. Time-of-flight techniques and neutron-gamma ray discrimination in the side detectors were used for background reduction. The measured asymmetry is small for angles less than 60 degrees lab and reaches a maximum value at approximately 110 degrees c.m.. The maximum asymmetry determined from the present experiment corresponds to a polarization of 0.50. The differential polarization can be fitted within experimental uncertainties by assuming that D-wave effects are negligible. The principal features of the data are qualitatively reproduced by Dodders reaction-matrix calculations which use the Werntz-Meyerhof level parameters for 4He. Author

Subject Categories:

  • Nuclear Physics and Elementary Particle Physics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE