Accession Number : AD0772663

Title :   Fast Neutron Cross Section Measurement System and Results.

Descriptive Note : Final technical rept. 1 Jun 71-1 Sep 73,


Personal Author(s) : Glasgow,Dale W. ; Velkley,Donald E. ; Brandenberger,J. D. ; McEllistrem,M. T.

Report Date : SEP 1973

Pagination or Media Count : 202

Abstract : A system has been designed and constructed for high accuracy neutron cross section measurements using pulsed beam time-of-flight techniques. The detection system has been used to obtain neutron scattering cross sections for Al, Si, Fe, Ni, and Co at 9.0 MeV incident neutron energy and to obtain a survey of neutron scattering by Carbon from 7 to 9 MeV incident energy. The cross sections have a normalization uncertainty or accuracy of about 5%, precision of 2-3% for strongly excited groups, and a precision of 5-10% for weakly excited groups. The report presents detailed design criteria for the detection system, and a description of detector shielding constructed for the measurements. It also contains a study of the data corrections which most strongly influence the accuracy of results. (Modified author abstract)

Descriptors :   *Neutron cross sections, *Nuclear radiation spectroscopy, Neutron scattering, Aluminum, Silicon, Iron, Nickel, Cobalt, Shielding

Subject Categories : Nuclear Physics & Elementary Particle Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE