基于FPGA的在线式海水γ谱仪研制  

Development of On-line Seawater Gamma Spectrometer Based on FPGA

作　　者：李湦 金坦[1] 徐卫锋[1] 毕明德[1] 

机构地区：[1]武汉第二船舶设计研究所,武汉430064

出　　处：《核电子学与探测技术》2015年第11期1098-1101,共4页Nuclear Electronics & Detection Technology

摘　　要：针对监测海水中放射性核素活度浓度极低的需求,研制了一种监测海水中放射性活度的γ谱仪。研制中,利用FPGA技术实现了γ谱仪的低功耗和数字化,并具有弱脉冲信号处理、数字采样、堆积判断等功能。实验测试表明:该γ谱仪具有对海水中放射性核素定量分析测量的能力,达到设计要求。This article mainly introduces the development of a gamma spectrometer,which monitors the radioactivity in the seawater,aiming at monitoring extreme low activity and concentration of radioactive nuclide in the seawater. In the development,FPGA technology is applied to realize the low energy consumption and digitalization of gamma spectrometer that has the functions of weak pulse signal processing,digital acquisition and pileup rejection. Test results show that the digital gamma spectrometer has the ability of the quantitative analysis and measurement for the radioactive nuclide in the seawater and this ability meets the design requirements.

关 键 词：数字化能谱仪 现场可编程门阵列 海水放射性监测 

分 类 号：TL8[核科学技术—核技术及应用] TL99