NMIS Time Correlations for Determining the Shape of Plutonium Using Second Order Statistics

Conference · Wed Jul 11 04:00:00 EDT 2001

OSTI ID:788613

Chiang, L G ^[1]

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1. ORNL

The Nuclear Materials Identification System (NMIS) detector-detector cross correlation signatures collected from passive measurements for plutonium assemblies are highly sensitive to its position with respect to the detectors. This position sensitivity coupled with an optimum configuration of four detectors about the assembly can theoretically be used to extract the shape distribution of the {sup 240}Pu in the assembly. This process is currently being simulated at the Oak Ridge National Laboratory by using four detectors arranged in a tetrahedron and {sup 252}Cf sources as surrogates for the {sup 240}Pu.

• Research Organization: Oak Ridge National Lab., TN (US)
• Sponsoring Organization: US Department of Energy (US)
• DOE Contract Number: AC05-00OR22725
• OSTI ID: 788613
• Report Number(s): P01-111185
• Country of Publication: United States
• Language: English

Related Subjects

11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS
IDENTIFICATION SYSTEMS
NUCLEAR MATERIALS MANAGEMENT
PLUTONIUM 240
POSITION SENSITIVE DETECTORS
SENSITIVITY
SHAPE
STATISTICS