Accession Number : AD0635160

Title :   CRITICAL MASS CALCULATIONS FOR COAXIAL AND VORTEX FLOW GASEOUS CORE REACTORS.

Corporate Author : COLUMBIA UNIV NEW YORK PLASMA LAB

Personal Author(s) : Tumm, Gunter W.

Report Date : APR 1966

Pagination or Media Count : 98

Abstract : Design point critical masses are calculated for two configurations of a gaseous core reactor. A new set of resonance and thermal cross sections, developed for this purpose, was used. The following effects and their influence on the critical mass are investigated: The relative position of the fuel region; The presence of hydrogen within the reactor cavity; The reactor operating temperature; The length-to-diameter ratio of the reactor; The presence of a nozzle; A simplified fuel density distribution; and The pressure vessel. For an optimum reactor geometry (corresponding to minimum critical mass) the critical mass of a 'vortex flow' gaseous core reactor is five times smaller than the critical mass of the 'coaxial flow' reactor. (Author)

Descriptors :   (*NUCLEAR REACTORS, CRITICAL ASSEMBLIES), (*REACTOR LATTICE PARAMETERS, NUCLEAR REACTORS), TEMPERATURE, FLUID MECHANICS, RESONANCE

Subject Categories : Fission Reactor Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE