Absolute nuclear material assay using count distribution (LAMBDA) space

Prasad, Mano K.; Snyderman, Neal J.; Rowland, Mark S.

Title: Absolute nuclear material assay using count distribution (LAMBDA) space

Patent · Tue Dec 01 00:00:00 EST 2015

OSTI ID:1227359

Prasad, Mano K.; Snyderman, Neal J.; Rowland, Mark S.

A method of absolute nuclear material assay of an unknown source comprising counting neutrons from the unknown source and providing an absolute nuclear material assay utilizing a model to optimally compare to the measured count distributions. In one embodiment, the step of providing an absolute nuclear material assay comprises utilizing a random sampling of analytically computed fission chain distributions to generate a continuous time-evolving sequence of event-counts by spreading the fission chain distribution in time.

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Research Organization:: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)

Sponsoring Organization:: USDOE

DOE Contract Number:: AC52-07NA27344

Assignee:: Lawrence Livermore National Security, LLC

Patent Number(s):: 9,201,025

Application Number:: 13/456,032

OSTI ID:: 1227359

Resource Relation:: Patent File Date: 2012 Apr 25

Country of Publication:: United States

Language:: English

References (14)

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Subthreshold neutron interrogator for detection of radioactive materials Evans, Michael; Menlove, Howard O.; Baker, Michael P. https://doi.org/https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/4201912 US Patent Document 4,201,912	patent	May 1980
Apparatus and method for quantitative assay of generic transuranic wastes from nuclear reactors Caldwell, John T.; Kunz, Walter; Atencio, James D. https://doi.org/https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/4483816 US Patent Document 4,483,816	patent	November 1984
Direct fissile assay of enriched uranium using random self-interrogation and neutron coincidence response Menlove, Howard O.; Stewart, James Edward https://doi.org/https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/4617466 US Patent Document 4,617,466	patent	October 1986
Multiple channel programmable coincidence counter Arnone, Gaetano J. https://doi.org/https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/4920271 US Patent Document 4,920,271	patent	April 1990
Cluster architecture for a highly parallel scalar/vector multiprocessor system Chen, Steve S.; Simmons, Frederick J.; Spix, George A. https://doi.org/https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/5197130 US Patent Document 5,197,130	patent	March 1993
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Cosmic ray neutron background reduction using localized coincidence veto neutron counting Menlove, Howard O.; Bourret, Steven C.; Krick, Merlyn S. https://doi.org/https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/6420712 US Patent Document 6,420,712	patent	July 2002
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Statistical Theory of Fission Chains and Generalized Poisson Neutron Counting Distributions Prasad, Manoj K.; Snyderman, Neal J. Nuclear Science and Engineering, Vol. 172, Issue 3 https://doi.org/10.13182/NSE11-86	journal	November 2012

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