Article Sidebar

PDF
Published: 2018-06-30
Abstract Views: 148
Views PDF: 231
DOI: https://doi.org/10.53747/jnst.v8i2.87
Issue
Vol. 8 No. 2 (2018)
Section
Articles
How to Cite
Phan, V. C., Truong, V. M., Bui , T. T., Nguyen , T. P., & Tran Ngọc, D. Q. (2018). Application of correlation pattern recognition technique for neutron– gamma discrimination in the EJ-301 liquid scintillation detector. Nuclear Science and Technology, 8(2), 19-26. https://doi.org/10.53747/jnst.v8i2.87

Application of correlation pattern recognition technique for neutron– gamma discrimination in the EJ-301 liquid scintillation detector

Phan Van Chuan1, Truong Van Minh2, Bui Thanh Trung3, Nguyen Thi Phuc1, Tran Ngọc Dieu Quynh1
1 Dalat University, 01 Phu Dong ThienVuong, Dalat, Lamdong, Vietnam
2 Dongnai University, 04 Le Quy Don, Bienhoa, Dongnai, Vietnam
3 Department of Postgraduate Studies, Dalat University, 01 Phu Dong Thien Vuong, Dalat, Lamdong

Main Article Content

Abstract

The ability to distinguish between neutrons and gamma-rays is important in the fast - neutron detection, especially when using the scintillation detector. A dual correlation pattern recognition (DCPR) method that was based on the correlation pattern recognition technique has been developed for classification of neutron/gamma events from a scintillation detector. In this study, an EJ-301 liquid scintillation (EJ301) detector was used to detect neutrons and gamma-rays from the 60Co and 252Cf sources; the EJ301 detector's pulses were digitized by a digital oscilloscope and its pulse-shape discriminant (PSD) parameters were calculated by the correlation pattern recognition (CPR) method with the reference neutron and gamma-ray pulses. The digital charge integration (DCI) method was also used as a reference-method for comparison with DCPR method. The figure-ofmerit (FOM) values which were calculated in the 50 ÷ 1100 keV electron equivalent (keVee) region showed that the DCPR method outperformed the DCI method. The FOMs of 50, 420 and 1000 keVee thresholds of DCPR method are 0.82 , 2.2 and 1.62, which are 1.55, 1.77, and 1.1 times greater than the DCI method, respectively.

Article Details

Keywords

Correlation pattern recognition method, EJ301 detector, pulse shape discrimination (PSD)

References

[1] S. D. Jastaniah, P. J. Sellin, "Digital pulse-shape algorithms for scintillation-based neutron detectors", IEEE Trans. Nucl. Sci. 49(4), 1824-1828, 2002.
[2]. .
[3]. G. F. Knoll, "Radiation Detection and Measurement", John Wiley & Sons, 2010.
[4]. A.Rahmat, L.R.Edward, F.S.David, "Development of a handheld device for simultaneous monitoring of fast neutrons and gamma rays", IEEE Trans. Nucl. Sci. 49(4), 1909-1913, 2002.
[5]. G. Liu, M. J. Joyce, X. Ma, M. D. Aspinall, "A digital method for the discrimination of neutrons and rays with organic scintillation detectors using frequency gradient analysis", IEEE Trans. Nucl. Sci. 57, 1682 – 1691, 2010.
[6]. C.S. Sosa, M. Flaska, S. A. Pozzi, "Comparison of analog and digital pulse-shape-discrimination systems", Nucl. Inst. And Meth. A 826, 72-79, 2016.
[7]. B.Wan, X. Y. Zhang, L. Chen, H. L. Ge, F. Ma, H. B. Zhang, Y. Q. Ju, Y. B. Zhang, Y.Y. Li, X.W. Xu, "Digital pulse shape discrimination methods for n - γ separation in an EJ-301 liquid scintillation detector", Chinese Physics C. Vol. 39, No. 11, 116201, 2015.
[8]. M. Nakhostin. P.M. Walker, "Application of digital zero-crossing technique for neutron–gamma discrimination in liquid organic scintillation detectors", Nucl. Inst. and Meth. A 621, 498501, 2010.
[9]. R. A. Winyard. J. E. Lutkin and G. W. Mcbeth, "Pulse Shape Discrimination In Inorganic And Organic Scintillators", Nuclear Instruments And Methods 95, I4I--I53, I97I.
[10]. C. Payne, P.J. Sellin, M. Ellis, K. Duroe, A. Jones, M. Joyce, G. Randall, R. Speller, "Neutron/gamma pulse shape discrimination in EJ-299-34 at high flux", IEEE Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC), 2015.
[11]. F. Marek, F. Muhammad, D.Wentzloff, S.A.Pozzi, "Influence of sampling properties of fast-waveform digitizers on neutron – gamma-ray pulse-shape discrimination for organic scintillation detectors", Nuclear Instruments and Methods in Physics Research A 729, 456–462, 2013.
[12]. B. D. Mellow, M. D. Aspinall, R. O. Mackin, M. J. Joyce, and A. J. Peyton, "Digital discrimination of neutrons and γ-rays in liquid scintillators using pulse gradient analysis", Nucl. Inst. and Meth. A 578, 191 – 197, 2007.
[13]. D. Takaku, T. Oishi, and M. Baba, "Development of neutron-gamma discrimination technique using pattern-recognition method with digital signal processing", Prog. Nucl. Sci. Technol. 1, 210-213, 2011.
[14]. H. Sakai, A. Uritani, Y. Takenaka, C. Mori, T. Iguchi, "New pulse-shape analysis method with multi-shaping amplifers", Nuclear Instruments and Methods in Physics Research A 421, 316-321, 1999.
[15]. A. Moslem, P. Vaclav, C. Frantisek, M. Zdenek, M. Filip, J. Radioanal, "Quick algorithms for real-time discrimination of neutrons and gamma rays", Nucl. Chem. 303, 583599, 2015.
[16]. C. Guerrero, D. Cano Ott, M. O. Fernandez, E. R. Gonzalez, T. Martınez, D. Villamarın, "Analysis of the BC501A neutron detector signals using the true pulse shape", Nuclear Instruments and Methods in Physics Research A 597, 212–218, 2008.
[17].M. L. Roush, M. A. Wilson, and W. F. Hornyak, "Pulse shape discrimination", Nucl. Inst. And Meth. A 31, 112-124, 1964.
[18]. M. J. Safari, F. D. Abbasi, H. Afarideh, S. Jamili, E. Bayat, "Discrete Fourier Transform Method for Discrimination of Digital Scintillation Pulses in Mixed Neutron-Gamma Fields", IEEE Trans. Nucl. Sci. 63(1), 325-332, 2016.