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Title: Neutron crosstalk between liquid scintillators

Abstract

We propose a method to quantify the fractions of neutrons scattering between liquid scintillators. Using a spontaneous fission source, this method can be utilized to quickly characterize an array of liquid scintillators in terms of crosstalk. The point model theory due to Feynman is corrected to account for these multiple scatterings. Using spectral information measured by the liquid scintillators, fractions of multiple scattering can be estimated, and mass reconstruction of fissile materials under investigation can be improved. Monte Carlo simulations of mono-energetic neutron sources were performed to estimate neutron crosstalk. A californium source in an array of liquid scintillators was modeled to illustrate the improvement of the mass reconstruction.

Authors:
ORCiD logo [1];  [1];  [1]
  1. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Publication Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1262176
Report Number(s):
LLNL-JRNL-666627
Journal ID: ISSN 0168-9002
Grant/Contract Number:
AC52-07NA27344
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment
Additional Journal Information:
Journal Volume: 794; Journal Issue: C; Journal ID: ISSN 0168-9002
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; 98 NUCLEAR DISARMAMENT, SAFEGUARDS AND PHYSICAL PROTECTION; 11 NUCLEAR FUEL CYCLE AND RUEL MATERIALS; Liquid scintillators; Crosstalk; Multiple scattering; Neutron multiplicity; Neutron correlation; Fissile materials

Citation Formats

Verbeke, J. M., Prasad, M. K., and Snyderman, N. J. Neutron crosstalk between liquid scintillators. United States: N. p., 2015. Web. doi:10.1016/j.nima.2015.04.019.
Verbeke, J. M., Prasad, M. K., & Snyderman, N. J. Neutron crosstalk between liquid scintillators. United States. doi:10.1016/j.nima.2015.04.019.
Verbeke, J. M., Prasad, M. K., and Snyderman, N. J. 2015. "Neutron crosstalk between liquid scintillators". United States. doi:10.1016/j.nima.2015.04.019. https://www.osti.gov/servlets/purl/1262176.
@article{osti_1262176,
title = {Neutron crosstalk between liquid scintillators},
author = {Verbeke, J. M. and Prasad, M. K. and Snyderman, N. J.},
abstractNote = {We propose a method to quantify the fractions of neutrons scattering between liquid scintillators. Using a spontaneous fission source, this method can be utilized to quickly characterize an array of liquid scintillators in terms of crosstalk. The point model theory due to Feynman is corrected to account for these multiple scatterings. Using spectral information measured by the liquid scintillators, fractions of multiple scattering can be estimated, and mass reconstruction of fissile materials under investigation can be improved. Monte Carlo simulations of mono-energetic neutron sources were performed to estimate neutron crosstalk. A californium source in an array of liquid scintillators was modeled to illustrate the improvement of the mass reconstruction.},
doi = {10.1016/j.nima.2015.04.019},
journal = {Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment},
number = C,
volume = 794,
place = {United States},
year = 2015,
month = 5
}

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