Light pulse shapes in liquid scintillators originating from gamma-rays and neutrons

Szczesniak, T.; Moszyński, M.; Syntfeld-Każuch, A.; Świderski, Ł.; Wolski, D.; Grodzicka, M.; Pausen, G.; Stein, J.; Kusner, M.R.; Schotanus, P.; Hurlbut, C.R.

doi:10.1109/nssmic.2009.5402296

Cited by 2 publications

(4 citation statements)

References 9 publications

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“…4. The light pulse shapes were recorded using the Bollinger-Thomas single photon method [14] modified to address the study of a light pulse shape due to gamma-rays and fast neutrons separately [15]. Two photomultipliers, i.e.…”

Section: Light Pulse Shapes From Gamma-rays and Fast Neutronsmentioning

confidence: 99%

“…Individual exponential components fitted to each scintillation decay profile are also presented. Scintillation decay data for EJ-309, EJ-276 and stilbene single crystal were obtained using the same experimental method and nearly identical setup as reported in [15] and [7], respectively. The n/γ discrimination capability of scintillators is described by the ratio of the intensities of the slow components due to neutrons (proton recoil), to gamma rays (primary electrons).…”

Section: Pulse Shapesmentioning

confidence: 99%

“…Fig.4. Experimental setup for the light shape measurements using the Bollinger-Thomas single photon method with PSD, following Ref [15]…”

mentioning

confidence: 99%

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2 inch molecular organic glass scintillator for neutron–gamma discrimination

Grodzicka-Kobylka

Szczęśniak²,

Moszyński³

et al. 2023

Nuclear Instruments and Methods in Physics Research Section A:

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Section: Light Pulse Shapes From Gamma-rays and Fast Neutronsmentioning

confidence: 99%

Section: Pulse Shapesmentioning

confidence: 99%

See 1 more Smart Citation

2 inch molecular organic glass scintillator for neutron–gamma discrimination

Grodzicka-Kobylka

Szczęśniak²,

Moszyński³

et al. 2023

Nuclear Instruments and Methods in Physics Research Section A:

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“…The current pulse is characterised by a fast rise time and a slow decay. The trailing side of the pulse is a sum of three exponentials with a fast, intermediate, and slow time constant [25], as illustrated in Figure 2. These 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.…”

Section: Tot Pulse Shape Discriminationmentioning

confidence: 99%

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

Roy,

Vartsky,

Mor

et al. 2021

Preprint

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A: 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 TOT are usually inferior to those obtained using other pulse shape discrimination (PSD) methods. We present a novel approach for fast neutron/gamma-ray PSD using Constant-Fraction Time-over-Threshold (CF-TOT) pulse shape analysis. The method was evaluated 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 neutron/gamma-ray discrimination was evaluated using Receiver Operator Characteristics curves and the results obtained with this approach were compared to the standard Constant Threshold Time-over-Threshold (CT-TOT) method. The novel CF-TOT PSD method results in >99.7% rejection of gamma-rays with ∼80% neutron acceptance, significantly better than CT-TOT.

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Light pulse shapes in liquid scintillators originating from gamma-rays and neutrons

Cited by 2 publications

References 9 publications

2 inch molecular organic glass scintillator for neutron–gamma discrimination

2 inch molecular organic glass scintillator for neutron–gamma discrimination

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

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