FY2008 Report on GADRAS Radiation Transport Methods

Technical Report · Wed Oct 01 04:00:00 EDT 2008

DOI:https://doi.org/10.2172/1130402· OSTI ID:1130402

Mattingly, John ^[1]; Mitchell, Dean J. ^[1]; Harding, Lee T. ^[1]; Varley, Eric S. ^[1]; Hilton, Nathan R. ^[1]

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1. Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)

The primary function of the Gamma Detector Response and Analysis Software (GADRAS) is the solution of inverse radiation transport problems, by which the configuration of an unknown radiation source is inferred from one or more measured radiation signatures. GADRAS was originally developed for the analysis of gamma spectrometry measurements. During fiscal years 2007 and 2008, GADRAS was augmented to implement the simultaneous analysis of neutron multiplicity measurements. This report describes the radiation transport methods developed to implement this new capability. This work was performed at the direction of the National Nuclear Security Administration's Office of Nonproliferation Research and Development. It was executed as an element of the Proliferation Detection Program's Simulation, Algorithm, and Modeling element.

• Research Organization: Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)
• Sponsoring Organization: USDOE National Nuclear Security Administration (NNSA)
• DOE Contract Number: AC04-94AL85000
• OSTI ID: 1130402
• Report Number(s): SAND--2008-7084; 508710
• Country of Publication: United States
• Language: English