Plutonium metal vs. oxide determination with the pulse-shape-discrimination-capable plastic scintillator EJ-299-33

Autor:	J. Kyle Polack, Alice Tomanin, Shaun D. Clarke, Paolo Peerani, M.M. Bourne, Sara A. Pozzi, J. L. Dolan, C.C. Lawrence, Marek Flaska
Rok vydání:	2014
Předmět:	Physics Nuclear and High Energy Physics Nuclear engineering Detector Gamma ray Oxide chemistry.chemical_element Scintillator Plutonium Metal chemistry.chemical_compound chemistry visual_art visual_art.visual_art_medium Neutron detection Neutron Instrumentation
Zdroj:	Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 767:188-192
ISSN:	0168-9002
DOI:	10.1016/j.nima.2014.08.002
Popis:	Neutron measurements can be used to distinguish plutonium in metal or oxide form, a capability that is of great interest in nuclear nonproliferation, treaty verification, and other applications. This paper describes measurements performed on well-characterized samples of plutonium oxide and plutonium metal using the pulse-shape-discrimination-capable plastic scintillator EJ-299-33. Results are compared to those obtained with a same-sized detector cell using the liquid scintillator EJ-309. The same optimized, digital pulse shape discrimination technique is applied to both detectors and the neutron pulse height distributions are compared. Results show that the EJ-299-33 plastics can be successfully used for plutonium measurements, where the gamma ray to neutron detection ratio is much higher than for typical radioactive sources. Results also show that EJ-299-33 detectors can be used to characterize plutonium samples, specifically to discriminate between plutonium metal and oxide.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::b568fb07f79e562445f24acf7bbaaed8 https://doi.org/10.1016/j.nima.2014.08.002 Zobrazit plný text záznamu Full Text from ScienceDirect