Determination of the Multiplication Factor and Its Bias by the ²⁵²Cf-Source Technique: A Method for Code Benchmarking with Subcritical Configurations

Conference · Mon Oct 06 00:00:00 EDT 1997

OSTI ID:527891

Perez, R. B. ^[1]; Valentine, T. E. ^[1]; Mihalczo, J. T. ^[1]; Mattingly, J. K. ^[1]

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1. Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)

A brief discussion of the Cf-252 source driven method for subcritical measurements serves as an introduction to the concept and use of the spectral ratio, Γ. It has also been shown that the Monte Carlo calculation of spectral densities and effective multiplication factors have as a common denominator the transport propagator. This commonality follows from the fact that the Neumann series expansion of the propagator lends itself to the Monte Carlo method. On this basis a linear relationship between the spectral ratio and the effective multiplication factor has been shown. This relationship demonstrates the ability of subcritical measurements of the ratio of spectral densities to validate transport theory methods and cross sections.

• Research Organization: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
• Sponsoring Organization: USDOE National Nuclear Security Administration (NNSA), Nuclear Criticality Safety Program (NCSP)
• DOE Contract Number: AC05-96OR22464
• OSTI ID: 527891
• Report Number(s): CONF-971005-18; ON: DE97007707; TRN: 97:019314
• Resource Relation: Conference: Joint International Conference on Mathematical Methods and Supercomputing in Nuclear Applications, Saratoga Springs, NY (United States), 6-10 Oct 1997; Other Information: PBD: 1997
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
97 MATHEMATICS AND COMPUTING
SUBCRITICAL ASSEMBLIES
MULTIPLICATION FACTORS
SPECTRAL DENSITY
MONTE CARLO METHOD
CRITICALITY
Nuclear Criticality Safety Program (NCSP)
Monte Carlo
Neumann Series Expansion
Fissile Assembly
Stochastic Observables
Spectral Densities