The efficient neutron-gamma pulse shape discrimination with small active volume scintillation detector
Main Article Content
Abstract
A small detector with EJ-301 liquid scintillation was manufactured for the study on the neutron-gamma pulse shape discrimination. In this research, four algorithms, including Threshold crossing time (TCT), Pulse gradient analysis (PGA), Charge comparison method (CCM), and Correlation pattern recognition (CPR) were developed and compared in terms of their discrimination effectiveness between neutrons and gamma rays. The figures of merits (FOMs) obtained for 100 ÷ 2000 keVee (keV energy electron equivalent) neutron energy range show the charge comparison method was the most efficient of the four algorithms.
Article Details
Keywords
EJ-301 liquid scintillation detector, threshold crossing time, pulse gradient analysis, charge comparison, correlation pattern recognition
References
[2] E. Bayat, N. Divani-Vais, M. M. Firoozabadi, and N. Ghal-Eh, “A comparative study on neutron-gamma discrimination with NE213 and UGLLT scintillators using zero-crossing method,” Radiat. Phys. Chem., Vol. 81, No. 3, pp. 217–220, 2012.
[3] J. Cerny, Z. Dolezal, M. P. Ivanov, E. S. Kuzmin, J. Svejda, and I. Wilhelm, “Study of neutron response and n--γ discrimination by charge comparison method for small liquid scintillation detector,” Nucl. Instruments Methods Phys. Res. Sect. A Accel. Spectrometers, Detect. Assoc. Equip., Vol. 527, No. 3, pp. 512–518, 2004.
[4] G. Liu, M. J. Joyce, X. Ma, and M. D. Aspinall, “A digital method for the discrimination of neutrons and rays with organic scintillation detectors using frequency gradient analysis,” Nucl. Sci. IEEE Trans., Vol. 57, No. 3, pp. 1682–1691, 2010.
[5] 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., Vol. 1, pp. 210–213, 2011.
[6] S. Marrone, D. Cano-Ott, N. Colonna, C. Domingo, F. Gramegna, E. M. Gonzalez, F. Gunsing, M. Heil, F. Käppeler, P. F. Mastinu, and others, “Pulse shape analysis of liquid scintillators for neutron studies,” Nucl. Instruments Methods Phys. Res. Sect. A Accel. Spectrometers, Detect. Assoc. Equip., Vol. 490, No. 1, pp. 299–307, 2002.
[7] S. D. Jastaniah and P. J. Sellin, “Digital pulse-shape algorithms for scintillation-based neutron detectors,” IEEE Trans. Nucl. Sci., Vol. 49 I, no. 4, pp. 1824–1828, 2002.
[8] G. F. Knoll, Radiation Detection and Measurement, Vol. 3. 2010.
[9] H. Spieler, “Pulse processing and analysis,” IEEE NPSS Short Course, 1993 Nucl. Sci. Symp. San Fr. Calif., 2002.
[10] S. Barra, S. Kouda, A. Dendouga, and N.E. Bouguechal, “Simulink behavioral modeling of a 10-bit pipelined ADC,” Int. J. Autom. Comput., Vol. 10, No. 2, pp. 134–142, 2013.
[11] 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. Instruments Methods Phys. Res. Sect. A Accel. Spectrometers, Detect. Assoc. Equip., Vol. 578, No. 1, pp. 191–197, 2007.