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|Title:||Time-Correlated Pulse-Height Measurements of Low-Multiplying Nuclear Materials|
|Authors:||MILLER Eric; DOLAN Jennifer; CLARKE Shaun D.; POZZI Sara; TOMANIN ALICE; PEERANI Paolo; MARLEAU P.; MATTINGLY J.k.|
|Citation:||NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT vol. 729 no. C p. 108-116|
|Publisher:||ELSEVIER SCIENCE BV|
|Type:||Articles in periodicals and books|
|Abstract:||Methods for the determination of the subcritical neutron multiplication of nuclear materials are of interest in the field of nuclear nonproliferation and safeguards. A time-correlated pulse-height (TCPH) analysis technique could be used to estimate the sub-critical multiplication of nuclear material. To evaluate the effectiveness of this technique and to benchmark the simulation capabilities of MCNPX-PoliMi/MPPost, a series of measurements were performed at the Joint Research Centre facility in Ispra, Italy. This campaign measured two low-multiplication samples: 1-kg mixed oxide (MOX) powder sample and plutonium-gallium (PuGa) disks. The measured results demonstrated that the sensitivity of the TCPH technique could not clearly distinguish samples with very-low levels of multiplication.|
|JRC Directorate:||Nuclear Safety and Security|
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