A comparative study on neutron-gamma discrimination with NE213 and UGLLT scintillators using zero-crossing method

Bayat, E.; Divani-Vais, N.; Firoozabadi, Mohammad Mehdi; Ghal-Eh, Nima

doi:10.1016/j.radphyschem.2011.10.016

Cited by 29 publications

(12 citation statements)

References 10 publications

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“…The n/γ discrimination study with our setup conditions displayed the Figure of Merit and theta angle consistent with literature for NE-213 [8] and Ultima Gold AB, with PSD capabilities slightly lower than reported for the latter sample. Concerning lab-made liquid scintillators, the study has shown very surprising and interesting results as very simple systems in toluene or xylene(s) could be as efficient as commercial scintillators both for the FOM (Figure of Merit) and for the angle measured between the neutron and the gamma lobes.…”

Section: Methodssupporting

confidence: 88%

The influence of the solvent in fast neutron/gamma discrimination

Frelin-Labalme¹,

Normand²

2014

EPL

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The biphenyl / POPOP couple is known for its scintillation properties, but we describe in this note its use for the discrimination between fast neutrons and gamma rays. More particularly, the influence of the matrix involved in this process is of interest, and for the first time pulse shape discrimination has been observed in non-common solvents such as heptane or ethanol. The discrimination efficiency of our systems is described in terms of factor of merit, angle between neutron and gamma lobes and scintillation performances.

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Section: Methodssupporting

confidence: 88%

The influence of the solvent in fast neutron/gamma discrimination

Frelin-Labalme¹,

Normand²

2014

EPL

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“…To evaluate the quantitative results distinguish neutron-gamma, the Figure -of -Merits (FOM) is used and defined as follows (12) (Roush, Wilson & Hornyak,1964;Bayat et al, 2012;Cerny et al, 2004;Liu et al, 2010;Takaku, Oishi & Baba, 2011;Marrone et al, 2002;Jastaniah & Sellin, 2002).…”

Section: Evaluation Of Pulse Shape Discrimination Methodsmentioning

confidence: 99%

“…Various neutron -gamma discrimination techniques have been developed, including analog and digital using to discrimination of neutron and gamma-ray events from scintillation detector, e.g., zero crossing method/constant fraction discriminators (Roush, Wilson & Hornyak,1964;Bayat et al, 2012), charge comparison method (Bayat et al, 2012;Cerny et al, 2004), frequency gradient analysis (Liu et al, 2010), rise time discrimination method, pattern recognition method (Takaku, Oishi & Baba, 2011) etc.…”

Section: Introductionmentioning

confidence: 99%

Nghiên Cứu Các Thuật Toán Phân Biệt Dạng Xung Neutron – Gamma Cho Detector Nhấp Nháy

Chuan¹,

Hòa²,

Châu³

et al. 2016

DLU JOS

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Bốn thuật toán phân biệt dạng xung cho mô hình detector nhấp nháy NE213 bằng kỹ thuật xử lý tín hiệu số đã được phát triển. Trong nghiên cứu này bộ phát xung, bộ số hóa và các thuật toán phân biệt dạng xung neutron-gamma được mô phỏng trong phần mềm Simulink-Matlab. Kết quả thu được cho thấy phương thức phân biệt theo thời gian tăng có hệ số phẩm chất (Figure-of-Merits: FOM = 1,09), phương pháp phân tích độ dốc xung (FOM = 0,66), phương thức so sánh diện tích xung (FOM = 2,21) và phương thức tương quan mẫu (FOM = 1,97). Kết quả này là cơ sở để xây dựng hệ thống đo neutron sử dụng detector nhấp nháy.

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“…In this circuit, the separation performed with the Anode detector signal and by using PSD modules. This method, due to the fact that it uses fast signals, in addition to the increased quality in separation, also has a small dead time, and it is good for use in neutron-gamma separation in a high number of counts [4], [5].…”

Section: Preparing the Geometry Of The Experimentsmentioning

confidence: 99%

“…Whatever the FOM number is greater than 1, the quality of the detector separator is better. The ratio (P/V) regarding the width rate of the neutron gamma spectrumrum is defined as the division of the count average of 2 neutron and gamma peaks on the count of lower height of the valley between 2 peaks [4], [5]. …”

Section: Manufacturing Different Voltage Dividermentioning

confidence: 99%

Investigation about decoupling capacitors of PMT voltage divider effects on neutron-gamma discrimination

Divani¹,

Bayat²,

Firoozabadi³

2014

AIP Conference Proceedings

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Scintillators are almost used in any nuclear laboratory. These detectors combine of scintillation materials, PMT and a voltage divider. Voltage dividers are different in resistive ladder design. But the effect of decoupling capacitors and damping resistors haven't discussed yet. In this paper at first a good equilibrium circuit designed for PMT, and it was used for investigating about capacitors and resistors in much manner. Results show that decoupling capacitors have great effect on PMT output pulses. In this research, it was tried to investigate the effect of Capacitor's value and places on PMT voltage divider in Neutron-Gamma discrimination capability. Therefore, the voltage divider circuit for R329-02 Hamamatsu PMT was made and Zero Cross method used for neutron-gamma discrimination. The neutron source was a 20Ci Am-Be. Anode and Dynode pulses and discrimination spectrum were saved. The results showed that the pulse height and discrimination quality change with the value and setting of capacitors.

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A comparative study on neutron-gamma discrimination with NE213 and UGLLT scintillators using zero-crossing method

Cited by 29 publications

References 10 publications

The influence of the solvent in fast neutron/gamma discrimination

The influence of the solvent in fast neutron/gamma discrimination

Nghiên Cứu Các Thuật Toán Phân Biệt Dạng Xung Neutron – Gamma Cho Detector Nhấp Nháy

Investigation about decoupling capacitors of PMT voltage divider effects on neutron-gamma discrimination

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