Title :
Cross-correlation simulations and measurements of plutonium-oxide powder
Author :
Clarke, S.D. ; Flaska, M. ; Pozzi, S.A. ; Peerani, P.
Author_Institution :
Department of Nuclear Engineering & Radiological Sciences, University of Michigan, Ann Arbor, 48108 USA
Abstract :
For the first time, measurements of the time-dependent cross-correlations of PuO2 have been made separately for neutrons and gamma rays. Six EJ-309 liquid scintillation detectors with a digital, offline PSD method were used with 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.
Keywords :
Gamma rays; Neutrons; Nuclear measurements; Organic materials; Performance evaluation; Powders; Pulse shaping methods; Scintillation counters; Solid scintillation detectors; Time measurement;
Conference_Titel :
Nuclear Science Symposium Conference Record, 2008. NSS '08. IEEE
Conference_Location :
Dresden, Germany
Print_ISBN :
978-1-4244-2714-7
Electronic_ISBN :
1095-7863
DOI :
10.1109/NSSMIC.2008.4774990
