基于嵌入式FPGA的数字化便携式LaBr_3(Ce)γ谱仪  

A Portable Digital γ Spectroscopy with LaBr_3(Ce) Detector Implemented by Embedded FPGA

作　　者：胡颖睿[1] 肖无云[2] 梁卫平[2] 李京伦[2] 

机构地区：[1]西南民族大学电气信息工程学院,成都610041 [2]防化研究院,北京102205

出　　处：《核电子学与探测技术》2013年第8期928-931,976,共5页Nuclear Electronics & Detection Technology

基　　金：西南民族大学中央高校基本科研业务费专项资金资助(11NZYQN13)

摘　　要：介绍了一种采用嵌入式FPGA完成数字梯形滤波成形等核脉冲数字信号处理,NIOSII软核完成数字稳谱、核素识别等数据处理的4K道数字化便携式LaBr3(Ce)谱仪。测试表明,该数字化谱仪的能谱分辨率小于3%,最大脉冲通过率可达200 kcps以上。The paper introduces a portable digital spectroscopy with LaBr 3 （Ce） detector and 4 096 channel transformation gain implemented by embedded FPGA .Among which nuclear pulse signal is processed by digital signal processing method such as digital trapezoidal filter and the spectroscopy is processed by NIOSII soft -core such as digital spectroscopy stabilization , nuclide identification and etc.The test shows that its spectroscopy resolution is less than 3%and maximum pulse passing is 200 kcps.

关 键 词：嵌入式现场可编程门阵列 梯形滤波成形 数字稳谱 NIOSII软核 LaBr3(Ce) 

分 类 号：TL822[核科学技术—核技术及应用]