Journal
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
Volume 665, Issue -, Pages 80-89Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.nima.2011.11.055
Keywords
Response function; Detection efficiency; Neutron; Time-of-flight; NE213 scintillator; SCINFUL-QMD
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Funding
- US Department of Energy [DE-AC52-06NA25396]
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Absolute neutron response functions and detection efficiencies of an NE213 liquid scintillator that was 12.7 cm in diameter and 12.7 cm in thickness were measured for neutron energies between 15 and 600 MeV at the Weapons Neutron Research facility of the Los Alamos Neutron Science Center. The experiment was performed with continuous-energy neutrons on a spallation neutron source by 800-MeV proton incidence. The incident neutron flux was measured using a U-238 fission ionization chamber. Measured response functions and detection efficiencies were compared with corresponding calculations using the SCINFUL-QMD code. The calculated and experimental values were in good agreement for data below 70 MeV. However, there were discrepancies in the energy region between 70 and 150 MeV. Thus, the code was partly modified and the revised code provided better agreement with the experimental data. (C) 2011 Elsevier B.V. All rights reserved.
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