THEORY OF PULSED NEUTRON SOURCE MEASUREMENTS

Technical Report · Thu Oct 31 04:00:00 EST 1963

OSTI ID:4689214

Garelis, E; Russell, Jr, J L

A method of utilizing pulsed neutron source measurements for the determination of the subcriticality of an assembly directly in terms of dollars is proposed. Essentially, the method determines the parameter (k BETA /1) using the complete response curve of a repetitively pulsed assembly after the quasi- equilibrium state is attained. This value of (k BETA /1) coupled with the usual alpha measurement, assuming the prompt decay constant to be dominant, yields the reactivity directly. The analytical model is based on a bare one-group diffusion theory system with m-delayed precursors. The application of these results to experiment shows that their applicability is much broader than the simple analytical model would indicate. (auth)

• Research Organization: General Electric Co. Vallecitos Atomic Lab., Pleasanton, Calif.
• NSA Number: NSA-17-032894
• OSTI ID: 4689214
• Report Number(s): CONF-39-47
• Country of Publication: United States
• Language: English

Related Subjects

CRITICAL ASSEMBLIES
CRITICALITY
DELAYED NEUTRONS
DIFFUSION
ERRORS
GROUP THEORY
LIFETIME
MATHEMATICS
MEASURED VALUES
MULTIPLICATION FACTORS
NEUTRON BEAMS
NEUTRON SOURCES
PHYSICS
PROMPT NEUTRONS
PULSES
REACTIVITY