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- W4308487911 endingPage "167713" @default.
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- W4308487911 abstract "This research presents the characterization methods and results for determining the pulse-integral response calibration, resolution, efficiency, and heavy charged particle light yield functions of boron-loaded deuterated liquid scintillators (BLDLS) through a combination of experimental neutron and gamma-ray measurements coupled with GEometry ANd Tracking (Geant4) Monte Carlo radiation transport simulations. These methods were used to characterize the scintillator light output, pulse-shape discrimination performance, and response matrix for a boron-loaded deuterated liquid scintillator to be used for future neutron spectrum unfolding measurements. These results were compared against an un-loaded deuterated liquid scintillator and a commercially-available hydrogen-based liquid scintillator, EJ-309, to benchmark the performance of the methods and scintillators to comparable measurements in literature. EJ-309 was shown to have only a 3.5 ± 2.3% and 8.1 ± 1.4% higher relative light output at 477 keV compared to Tol-D 8 and Tol-D 8 − 10 B, respectively, a significant increase in performance over previous BLDLS results. Additionally, Tol-D 8 and Tol-D 8 − 10 B have similar PSD performance, both exceeding that of EJ-309 as a function of light yield. Finally, full detector response matrices, used for neutron spectrum unfolding, were generated for each scintillator, and the condition of these response matrices were evaluated. The deuterated scintillators resulted in worse conditioned response matrices compared to EJ-309 for neutron energies ranging between 0.5 MeV to 6 MeV, primarily due to having a lower pulse-integral resolution at the smaller detector sizes used in this work. The boron-loaded scintillator shows a similarly conditioned response matrix to the un-loaded variant, thereby lowering the characterizable neutron energy threshold to thermal energies while also enhanced the neutron detection efficiency." @default.
- W4308487911 created "2022-11-12" @default.
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- W4308487911 date "2023-02-01" @default.
- W4308487911 modified "2023-09-30" @default.
- W4308487911 title "Boron-loaded deuterated liquid scintillator response characterization for neutron spectroscopy" @default.
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- W4308487911 doi "https://doi.org/10.1016/j.nima.2022.167713" @default.
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