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Fission meter and neutron detection using poisson distribution comparison

United States Patent

November 18, 2014
View the Complete Patent at the US Patent & Trademark Office
Lawrence Livermore National Laboratory - Visit the Industrial Partnerships Office Website
A neutron detector system and method for discriminating fissile material from non-fissile material wherein a digital data acquisition unit collects data at high rate, and in real-time processes large volumes of data directly into information that a first responder can use to discriminate materials. The system comprises counting neutrons from the unknown source and detecting excess grouped neutrons to identify fission in the unknown source. Comparison of the observed neutron count distribution with a Poisson distribution is performed to distinguish fissile material from non-fissile material.
Rowland; Mark S. (Alamo, CA), Snyderman; Neal J. (Berkeley, CA)
Lawrence Livermore National Security, LLC (Livermore, CA)
12/ 712,040
February 24, 2010
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH The United States Government has rights in this invention pursuant to Contract No. W-7405-ENG-48 between the United States Department of Energy and Lawrence Livermore National Security, LLC.