Research on the best acquisition parameters of NaI digital spectrometer

Based on virtual instrument ideas, a set of NaI digital spectrum measurement system is designed and structured. For the FJ374 type NaI (Tl) scintillation detector and specific radioactive source (⁶⁰Co radioactive source, ¹³⁷Cs radioactive source), the best acquisition parameters of the digital spectrum measurement system is determined through research and experiments. The optimum measurement parameters of the NaI(Tl) scintillation detector is as follows: falling edge trigger sampling mode, acquisition range is 1V, the trigger threshold is -0.05V, the sampling rate is greater than 32M/s, sampling length is 300 points.