Fig. 1. Gaussian pulse shaping in the presence of false signal

Fig. 2. Gaussian pulse shaping when false signal is eliminated

Fig. 3. Block diagram of implementation of Gaussian pulse shaping algorithm

Fig. 4. Impulse response of Gaussian pulse shaping system for double exponential signal

Fig. 5. Gaussian pulse shaping with different t_peak

Fig. 6. Gaussian pulse shaping with different σ

Fig. 7. Gaussian pulse shaping with different s

Fig. 8. Impact on frequency characteristics corresponding to different σ

Fig. 9. Impact on frequency characteristics corresponding to different s

Fig. 10. Results of shaped pulses in time domain and frequency domain

Fig. 11. Pile-up pulse separation performance of different pulse shaping algorithms

Fig. 12. Energy spectra obtained by different pulse shaping algorithms

Fig. 13. Relationship between energy resolution and peaking time under different tube current conditions

Fig. 14. Relationship between the area of the 5.89 keV peak and peaking time under different tube current conditions