基于Pixie-Net数字化仪的γ-γ符合测量实验  

γ-γ Coincidence Measurement experiment based on Pixie-Net digitizer

作　　者：葛浩煜 杨佳霖 林喆阳 楼建玲[1] GE Hao-yu;YANG Jia-lin;LIN Zhe-yang;LOU Jian-ling(School of Physics and State Key Laboratory of Nuclear Physics and Technology,Peking University,Beijing 100871,China)

机构地区：[1]北京大学物理学院核物理与核技术国家重点实验室,北京100871

出　　处：《大学物理》2024年第5期79-85,共7页College Physics

基　　金：国家自然科学基金(12275007,U1867214,11775004)资助。

摘　　要：随着核物理技术的发展,传统的电子学插件已经无法满足日益增长的核物理实验要求.数字化仪凭借其集成度高、数据处理灵活的优势,获得了广泛的应用.本实验尝试将Pixie-Net数字化仪用于NaI和CeBr_(3)探测器构成的γ-γ符合测量实验,简化电子学,提升教学效果.测量结果表明:根据探测器的信号特点优化了数字化仪的参数,以及修正了探测器和放射源尺寸带来的角关联系数差异后,γ-γ符合测量法测量得到的放射源活度与理论值误差小于基于传统电子学的β-γ符合法.With the development of nuclear physics technology,traditional electronic modules are no longer able to meet the increasingly demanding requirements of nuclear physics experiments.Digital instruments have been widely used due to advantages of high integration and flexible data processing.We attempt to use the Pixie-Net digitizer for the γ-γ coincidence experiment using the NaI and CeBr_(3) detectors in order to simplify experimental equipment and to improve teaching effectiveness.The results show that after optimizing the parameters of the digitizer based on the pulse shapes and correcting the difference in angular correlation coefficient caused by the size of the detector and radiation source,the activity error of the radioactive source between the test value and the theoretical value is less than that from theβ-γcoincidence method based on traditional electronics.

关 键 词：Pixie-Net数字化仪 γ-γ符合测量 放射源活度 

分 类 号：O571.1[理学—粒子物理与原子核物理]