Design and realization on digital gauss forming algorithm of gamma-ray pulse based on FPGA

Nuclear spectrum is the important information in domain of nuclear physics research. Radiation detection and applications of nuclear technology, nuclear spectrum measurement technique have been a hot issue. And one of the key technologies of digital nuclear spectrum measurement technology is how to achieve digital filter-shaping algorithm on the digital processing device. Base on Sallen-Key filter model and Kirchhoff Current Law, the digital Gauss shaping algorithm of digital gamma spectrum measurement is deduced and analyzed in this article, and simulated the nuclear pulse by use of Matlab7.0. In order to apply the algorithm in FPGA (Field Programmable Gate Array) chip, this article improves and optimizes with SD coding method. And the experiments verify the correctness and feasibility of the method.