TY - JOUR
T1 - Monte Carlo and analytical models of neutron detection with organic scintillation detectors
AU - Pozzi, Sara A.
AU - Flaska, Marek
AU - Enqvist, Andreas
AU - Pázsit, Imre
N1 - Funding Information:
The Oak Ridge National Laboratory is managed and operated for the US Department of Energy by UT-Battelle, LLC, under Contract DE-AC05-00OR22725. This work was supported in part by the US Department of Energy, National Nuclear Security Administration Office of Nonproliferation Research Engineering, NA-22. We thank the reviewers for detailed and insightful comments on this manuscript.
PY - 2007/11/21
Y1 - 2007/11/21
N2 - This paper presents a new technique for the analysis of neutron pulse height distributions generated in an organic scintillation detector. The methodology presented can be applied to techniques such as neutron spectrum unfolding, which have a variety of applications, including nuclear nonproliferation and homeland security. The technique is based on two independent approaches: (i) the use of the MCNP-PoliMi code to simulate neutron detection on an event-by-event basis with the Monte Carlo method and (ii) an analytical approach for neutron slowing down and detection processes. We show that the total neutron pulse height response measured by the organic scintillators is given by the sum of a large number of different neutron histories, each composed of a certain number of neutron scatterings on hydrogen and/or carbon. The relative contributions of each of these histories are described for a cylindrical liquid scintillator BC-501A. Simulations and measurements of neutron pulse height distributions are essential for neutron spectrum unfolding procedures.
AB - This paper presents a new technique for the analysis of neutron pulse height distributions generated in an organic scintillation detector. The methodology presented can be applied to techniques such as neutron spectrum unfolding, which have a variety of applications, including nuclear nonproliferation and homeland security. The technique is based on two independent approaches: (i) the use of the MCNP-PoliMi code to simulate neutron detection on an event-by-event basis with the Monte Carlo method and (ii) an analytical approach for neutron slowing down and detection processes. We show that the total neutron pulse height response measured by the organic scintillators is given by the sum of a large number of different neutron histories, each composed of a certain number of neutron scatterings on hydrogen and/or carbon. The relative contributions of each of these histories are described for a cylindrical liquid scintillator BC-501A. Simulations and measurements of neutron pulse height distributions are essential for neutron spectrum unfolding procedures.
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U2 - 10.1016/j.nima.2007.08.246
DO - 10.1016/j.nima.2007.08.246
M3 - Article
AN - SCOPUS:35448981423
SN - 0168-9002
VL - 582
SP - 629
EP - 637
JO - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
JF - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
IS - 2
ER -