Accession Number : AD0663112

Title :   ANGULAR DISTRIBUTIONS OF GAMMA RAYS FROM (N,N' GAMMA) INTERACTIONS OF 2.8 MEV NEUTRONS WITH SODIUM, MAGNESIUM, ALUMINUM, SULFUR AND CHLORINE,

Corporate Author : NAVAL RADIOLOGICAL DEFENSE LAB SAN FRANCISCO CALIF

Personal Author(s) : Thompson,W. E. ; Engesser,F. C. ; Ferguson,J. M.

Report Date : 04 OCT 1967

Pagination or Media Count : 40

Abstract : The differential production cross sections for ten gamma rays resulting from the n,n' gamma reaction of 2.8 MeV neutrons with the nuclei of Na, Mg, Al, S, and Cl were measured. Although measurements of some of these cross sections at 90 deg have been reported previously, the newly acquired angular mobility of the neutron generator made possible the extension of these measurements to other angles. These resulting angular distributions were also calculated using Satchler's formalism adapted to Moldauer's modification of Hauser-Feshbach theory, using the transmission coefficients of Perey and Buck. Each distribution was calculated using two values of Moldauer's parameter Q. The theoretical variations with angle of the gamma-ray production cross sections is reproduced from the computer-output graphs. The present experimental results obtained at 90 deg, 70 deg, 55 deg, and 31 deg are plotted on these graphs along with the results of others where they are available. (Author)

Descriptors :   (*GAMMA RAY CROSS SECTIONS, MEASUREMENT), (*NEUTRON REACTIONS, DIFFERENTIAL CROSS SECTIONS), (*SODIUM, NEUTRON REACTIONS), (*MAGNESIUM, NEUTRON REACTIONS), (*ALUMINUM, NEUTRON REACTIONS), (*SULFUR, NEUTRON REACTIONS), (*CHLORINE, NEUTRON REACTIONS), INELASTIC SCATTERING, GAMMA EMISSION, SECONDARY EMISSION, NUCLEAR ENERGY LEVELS

Subject Categories : Nuclear Physics & Elementary Particle Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE