Accession Number : AD0720702

Title :   Temperature Dependence of Thermal Diffusion Length for Plutonium-Beryllium Neutrons in Borated Water.

Descriptive Note : Master's thesis,

Corporate Author : NAVAL POSTGRADUATE SCHOOL MONTEREY CALIF

Personal Author(s) : Frew,John Archibald

Report Date : DEC 1970

Pagination or Media Count : 76

Abstract : The temperature dependence of diffusion length for PU-BE neutrons in distilled water poisoned with boric acid was studied using concentrations of 1.0, 8.0, 16.0, and 30.0 grams per liter. Runs at each concentration were made at temperatures of 95, 131, and 167F. The trend of temperature dependence was clearly established. A theoretical temperature dependence of kappa squared, where kappa=1/L is proposed using a Maxwellian distribution. (Author)

Descriptors :   (*NEUTRON TRANSPORT THEORY, THERMAL NEUTRONS), (*NEUTRON AGE, NUMERICAL ANALYSIS), REACTOR POISONS, BORATES, PLUTONIUM COMPOUNDS, BERYLLIUM COMPOUNDS, NEUTRON ABSORPTION, NEUTRON CROSS SECTIONS, BORIC ACID, CURVE FITTING, INTEGRALS, NUMERICAL INTEGRATION, COMPUTER PROGRAMS, THESES

Subject Categories : Fission Reactor Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE