Design of array switching circuit for multiplex nuclear pulse signal

Commercial multi-channel energy spectrometers have good performance, they multiple input signal channels and analyzers, which can simultaneously acquire the spectrum of nuclear pulse signals. But channel this general spectrometer cannot be switched between internal an only fixed to corresponding analyzers. Hence, resolve issue, paper designed a array switching circuit. The core circuit is switch chip with low resistance high bandwidth, controls connection Using 137Cs uranium ore as radioactive sources, test data analysis were carried out using NaI detector, respectively, when passed through did not pass results showed that demonstrates little effect on resolution linearity analyzers but causes small drift high-energy photopeak, improve reliability by accumulation. This make application more flexible reliable.