Title: Neutron and Gamma-ray Cross-correlation Measurements of Plutonium Oxide Powder
Authors: CLARKE Shaun D.FLASKA M.POZZI SaraPEERANI Paolo
Citation: NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT vol. 604 no. 3 p. 618-623
Publisher: ELSEVIER SCIENCE BV
Publication Year: 2009
JRC Publication N°: JRC51660
ISSN: 0168-9002
URI: http://dx.doi.org/10.1016/j.nima.2009.02.045
http://publications.jrc.ec.europa.eu/repository/handle/JRC51660
DOI: 10.1016/j.nima.2009.02.045
Type: Articles in Journals
Abstract: For the first time, measurements of the time-dependent cross-correlation distributions of plutonium oxide have been made separately for neutrons and gamma rays. Six EJ-309 liquid scintillation detectors with a digital, offline pulse shape discrimination and pulse timing method were used to measure five different samples of varying mass and burnup. The number of (neutron, neutron) correlations were selectively analyzed versus plutonium mass and a clear, increasing trend was observed. Additionally, the measurement scenarios were modeled using the MCNP-PoliMi code and good agreement was observed between the measured and simulated cross-correlation functions.
JRC Institute:Institute for the Protection and Security of the Citizen

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