2 inch molecular organic glass scintillator for neutron–gamma discrimination

Grodzicka-Kobylka, M.; Szczęśniak, T.; Moszyński, M.; Świderski, Ł.; Brylew, Kamil; Feng, Patrick L.; Nguyen, Long; Carlson, Joseph S.; Valiente-Dobón, J. J.; Misiarz, Agnieszka; Misiarz, A.; Talarek, Ł.; Zając, P.

doi:10.1016/j.nima.2022.167702

Cited by 5 publications

(4 citation statements)

References 13 publications

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“…The grey distributions correspond to the full energy range, while the blue ones represent data within narrow energy windows of (100±10) keVee or (1±0.1) MeVee. Table 4 presents corresponding FoMs calculated for the two M600 plastics and the stilbene single crystal as well as EJ-276 reported earlier in [20], [24]. The FoM values computed for the 1" × 1" stilbene crystal are superior to that obtained for the M600 samples.…”

Section: Psd Performancementioning

confidence: 82%

“…The crystalline stilbene exhibits the best PSD performance among many other plastics, excelling even the novel organic glass scintillators (OGS) (see recent results in Ref. [20]). The M600 plastics exhibit a PSD performance comparable to that of Eljen Technology EJ276 scintillators [20], [24].…”

Section: Psd Performancementioning

confidence: 99%

“…[20]). The M600 plastics exhibit a PSD performance comparable to that of Eljen Technology EJ276 scintillators [20], [24]. It was also noticed that PSD capability depends on the sample sizethe small M600 sample separates neutron and gamma peaks better than the big one.…”

Section: Psd Performancementioning

confidence: 99%

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Characterization of a novel polyurethane-based plastic scintillator for neutron and gamma detection in mixed radiation fields

Syntfeld-Każuch,

Swiderski,

Szczesniak

et al. 2024

Preprint

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We present studies of a novel plastic scintillator branded M600, which was developed and provided by Target Systemelektronik. This new material is, in contrast to other solid organic scintillators offered by commercial providers, based on a polyurethane matrix complemented with scintillating and wavelength-shifting additives. This paper covers measurements of absolute light output, LO, (photons per 1 MeV-ɣ, ɣ-non-proportionality (NP), light pulse shapes, and neutron-gamma (n/ɣ) discrimination. The measurements were carried out either using standard calibration gamma sources (LO, NP) or in a mixed field of neutron and ɣ radiation from an intense (~4 × 10 neutrons/s/4π) AmBe source (n/ɣ discrimination). The measured light output was 9650±1000 ph/MeV, and the PSD’s figure of merit (FoM) was found as 2.2±0.1 at 1000 keVee for Ø1” × 1” M600 sample. The bigger sample (Ø2” × 2“) exhibits about 25% lower LO and poorer FoM when compared to the Ø1” × 1” M600, due to self-absorption.

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Section: Psd Performancementioning

confidence: 82%

Section: Psd Performancementioning

confidence: 99%

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Characterization of a novel polyurethane-based plastic scintillator for neutron and gamma detection in mixed radiation fields

Syntfeld-Każuch,

Swiderski,

Szczesniak

et al. 2024

Preprint

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show abstract

“…These time constants are similar for proton recoils (induced by fast neutrons) and electrons (induced by gamma-rays), but the proportions of the amplitude for each pulse component are different for the two particles. The same applies to some plastic scintillators, organic glass scintillators and stilbene crystals [28]. For our liquid scintillator-PMT configuration, the calculated decay times are 6 ns, 37 ns and 250 ns for the fast, intermediate and the slow components, respectively.…”

Section: Introductionmentioning

confidence: 79%

Evaluation of the Constant Fraction Time-Over-Threshold (CF-TOT) method for neutron-gamma pulse shape discrimination

et al. 2022

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The use of Time-over-Threshold (TOT) for the discrimination between fast neutrons and gamma-rays is advantageous when large number of detection channels are required due to the simplicity of its implementation. However, the results obtained using the standard, Constant Threshold TOT (CT-TOT) are usually inferior to those obtained using other pulse shape discrimination (PSD) methods, such as Charge Comparison or Zero-Crossing approaches, especially for low amplitude neutron/gamma-ray pulses. We evaluate another TOT approach for fast neutron/gamma-ray PSD using Constant-Fraction Time-over-Threshold (CF-TOT) pulse shape analysis. The CT-TOT and CF-TOT methods were compared quantitatively using digitized waveforms from a liquid scintillator coupled to a photomultiplier tube as well as from a stilbene scintillator coupled to a photomultiplier tube and a silicon photomultiplier. The quality of CF-TOT neutron/gamma-ray discrimination was evaluated using Receiver Operator Characteristics curves and the results obtained with this approach were compared to that of the standard CT-TOT method. The CF-TOT PSD method results in > 99.9% rejection of gamma-rays with > 80% neutron acceptance, much better than CT-TOT.

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Fundamental processes and recent development of organic scintillators

Koshimizu

2025

Journal of Luminescence

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2 inch molecular organic glass scintillator for neutron–gamma discrimination

Cited by 5 publications

References 13 publications

Characterization of a novel polyurethane-based plastic scintillator for neutron and gamma detection in mixed radiation fields

Characterization of a novel polyurethane-based plastic scintillator for neutron and gamma detection in mixed radiation fields

Evaluation of the Constant Fraction Time-Over-Threshold (CF-TOT) method for neutron-gamma pulse shape discrimination

Fundamental processes and recent development of organic scintillators

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