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Published: 2018-06-30
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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

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