Fig. 1. Decay scheme of ⁶⁰Co

Fig. 2. Standard calibration source of mixed γ radionuclides

Fig. 3. Experimental results of peak efficiency for the HPGe detector

Fig. 4. Schematic diagram of the HPGe detector

Fig. 5. Effect of the dead layer thickness of HPGe detector on the peak efficiency

Fig. 6. Effect of the distance from the endcap of Ge crystal to the shell of HPGe detector on the peak efficiency

Fig. 7. Simulation results and experimental values of total efficiency of the HPGe detector with different thickness of the incomplete charge collection zone (color online)

Fig. 8. Comparison of the spectra of simulation results with/without correction with experimental results for γ-rays with energy of 59.5 keV (color online)