Fig. 1. Snapshot of ø2.54 cm×2.54 cm and ø5.08 cm×5.08 cm self-developed plastic scintillators

Fig. 2. Schematic of n-γ discrimination experiment

Fig. 3. Pulse amplitude spectra of ¹³⁷Cs source with self-developed plastic scintillator among the experimental measurement, MCNP5 simulation, and the broadened spectrum of MCNP5 simulation

Fig. 4. Energy calibration curves of two self-developed plastic scintillators and EJ-299-33A for ¹³⁷Cs and ²²Na sources

Fig. 5. Pulse amplitude spectra of two self-developed plastic scintillators and EJ-299-33A

Fig. 6. Diagram of parameter settings for the charge integration method

Fig. 7. Differentiate diagram of n-γ discrimination ability

Fig. 8. n-γ discrimination ability differentiaion chart of the four electron equivalent zones(a) E 100~200 keVee, (b) E 200~300 keVee, (c) E 300~400 keVee, (d) E 400~500 keVee

Fig. 9. PSD vs. electron equivalent energy histograms(a) 2.54-cm self-developed plastic scintillator, (b) 5.08-cm self-developed plastic scintillator, (c) EJ-299-33A

Fig. 10. PSD vs. electron equivalent energy histogram of ²⁴¹Am-Be neutron source and ¹³⁷Cs gamma source

Fig. 11. Comparison of FOM values in different energy zones of three plastic scintillator detectors