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Title: Measurements of fast neutron scattering in plastic scintillator with energies from 20 to 200 MeV

Abstract

Scattering of neutrons with energies ranging from 20 to 200 MeV was observed in an organic plastic scintillator array as a test for accuracy of simulation by two GEANT4-based models. The experiment was conducted at the LANSCE WNR facility at Los Alamos National Laboratory using a collimated neutron beam of well-defined energy and trajectory impinging on 16 BC-408 plastic scintillator detectors arranged in a horizontal array 2 detectors tall and 8 deep. Results from neutron scattering observations include hit-multiplicity distributions, beam attenuation depth, crosstalk events, scattering angle, attenuation depth between hits, and dark-scattering of neutrons from carbon nuclei, all as a function of the incident neutron energy. Measurement results are compared with predictions from two GEANT4-based Monte Carlo simulations, and agreement varies considerably over neutron energy, becoming poor at higher energies, pointing to needed improvement in simulation of neutrons in plastic scintillator.

Authors:
; ; ; ; ; ;
Publication Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA); National Science Foundation (NSF)
OSTI Identifier:
1548016
Alternate Identifier(s):
OSTI ID: 1819160
Report Number(s):
LA-UR-21-22896
Journal ID: ISSN 0168-9002; S0168900219310010; 162436; PII: S0168900219310010
Grant/Contract Number:  
NA0000979; 89233218CNA000001; PHY-1744043
Resource Type:
Published Article
Journal Name:
Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment
Additional Journal Information:
Journal Name: Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment Journal Volume: 943 Journal Issue: C; Journal ID: ISSN 0168-9002
Publisher:
Elsevier
Country of Publication:
Netherlands
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; neutron detector; plastic scintillator; neutron scattering

Citation Formats

Rogers, W. F., Kuchera, A. N., Boone, J., Frank, N., Mosby, S., Thoennessen, M., and Wantz, A. Measurements of fast neutron scattering in plastic scintillator with energies from 20 to 200 MeV. Netherlands: N. p., 2019. Web. doi:10.1016/j.nima.2019.162436.
Rogers, W. F., Kuchera, A. N., Boone, J., Frank, N., Mosby, S., Thoennessen, M., & Wantz, A. Measurements of fast neutron scattering in plastic scintillator with energies from 20 to 200 MeV. Netherlands. https://doi.org/10.1016/j.nima.2019.162436
Rogers, W. F., Kuchera, A. N., Boone, J., Frank, N., Mosby, S., Thoennessen, M., and Wantz, A. Fri . "Measurements of fast neutron scattering in plastic scintillator with energies from 20 to 200 MeV". Netherlands. https://doi.org/10.1016/j.nima.2019.162436.
@article{osti_1548016,
title = {Measurements of fast neutron scattering in plastic scintillator with energies from 20 to 200 MeV},
author = {Rogers, W. F. and Kuchera, A. N. and Boone, J. and Frank, N. and Mosby, S. and Thoennessen, M. and Wantz, A.},
abstractNote = {Scattering of neutrons with energies ranging from 20 to 200 MeV was observed in an organic plastic scintillator array as a test for accuracy of simulation by two GEANT4-based models. The experiment was conducted at the LANSCE WNR facility at Los Alamos National Laboratory using a collimated neutron beam of well-defined energy and trajectory impinging on 16 BC-408 plastic scintillator detectors arranged in a horizontal array 2 detectors tall and 8 deep. Results from neutron scattering observations include hit-multiplicity distributions, beam attenuation depth, crosstalk events, scattering angle, attenuation depth between hits, and dark-scattering of neutrons from carbon nuclei, all as a function of the incident neutron energy. Measurement results are compared with predictions from two GEANT4-based Monte Carlo simulations, and agreement varies considerably over neutron energy, becoming poor at higher energies, pointing to needed improvement in simulation of neutrons in plastic scintillator.},
doi = {10.1016/j.nima.2019.162436},
journal = {Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment},
number = C,
volume = 943,
place = {Netherlands},
year = {2019},
month = {11}
}