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|Title:||Pulse-Height Distributions of Neutron and Gamma Rays from Plutonium-Oxide Samples|
|Authors:||POZZI Sara; CLARKE Shaun D.; FLASKA M.; PEERANI Paolo|
|Citation:||NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT vol. 608 no. 2 p. 310-315|
|Publisher:||ELSEVIER SCIENCE BV|
|Type:||Articles in periodicals and books|
|Abstract:||We present new results on neutron and gamma-ray pulse-height distributions measured with liquid scintillators from five plutonium-oxide samples of varying mass and burnup and a Cf-252 isotopic source. We show that the analysis of the pulse-height distributions can be used to easily distinguish the fissile material (plutonium oxide) from the Cf-252 source. Moreover, the slope of the measured pulse-height distributions can be analyzed to distinguish the burnup of the samples, independently of their mass. Finally, the measurement scenarios are modeled using the MCNP-PoliMi code and good agreement is observed between the measured and simulated pulse-height distributions.|
|JRC Directorate:||Space, Security and Migration|
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