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.
MILLER Eric;
DOLAN Jennifer;
CLARKE Shaun D.;
POZZI Sara;
TOMANIN Alice;
PEERANI Paolo;
MARLEAU P.;
MATTINGLY J.K.;
2013-07-29
ELSEVIER SCIENCE BV
JRC79989
0168-9002,
https://publications.jrc.ec.europa.eu/repository/handle/JRC79989,
10.1016/j.nima.2013.06.062,
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