Neutron chain length distributions in subcritical systems

Conference · Mon Sep 27 00:00:00 EDT 1999

OSTI ID:756964

Nolen, S D; Spriggs, G

In this paper, the authors present the results of the chain-length distribution as a function of k in subcritical systems. These results were obtained from a point Monte Carlo code and a three-dimensional Monte Carlo code, MC++. Based on these results, they then attempt to explain why several of the common neutron noise techniques, such as the Rossi-{alpha} and Feynman's variance-to-mean techniques, are difficult to perform in highly subcritical systems using low-efficiency detectors.

• Research Organization: Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
• Sponsoring Organization: USDOE Office of Defense Programs (DP) (US)
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 756964
• Report Number(s): LA-UR-99-1236; TRN: US0003752
• Resource Relation: Conference: International Conference on Mathematics and Computation, Reactor Physics and Environmental Analysis in Nuclear Applications, Madrid (ES), 09/27/1999--09/30/1999; Other Information: PBD: 27 Sep 1999
• Country of Publication: United States
• Language: English

Related Subjects

21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS
MULTIPLICATION FACTORS
SUBCRITICAL ASSEMBLIES
MONTE CARLO METHOD
THREE-DIMENSIONAL CALCULATIONS
REACTOR NOISE
REACTOR KINETICS
ROSSI ALPHA METHOD