辐射防护2024，Vol.44Issue(4)：343-348,6.
核测量用裂变电离室宽量程中子注量率测量性能验证
Performance verification of wide range neutron fluence rate measurement by fission ionization chambers for nuclear measurement
摘要
Abstract
This article analyzes the working principle of the fission ionization chamber and various working modes of wide range measurement.Based on its characteristics of multiple working modes,the measurement technology of wide range neutron fluence rate is studied,and the test method in reactor is discussed.Performance verification was conducted on the fission chamber pulse mode and mean square pressure mode in the reactor.The test results showed that the detector has an ultra wide range,and the maximum linearity between the detector output and neutron fluence rate in pulse counting mode is 1.16%.The maximum linearity in mean square pressure working mode is 2.06%,and the upper limit of neutron flux measurement can reach the level of 1010 cm-2·s-1,which complies with the wide range usage requirements of the intermediate range channel of the AP series external nuclear measurement system,and can be widely used in nuclear power and marine external nuclear measurement and monitoring systems.关键词
堆外核测量/中间量程/裂变电离室/超宽量程/堆上试验Key words
ex-core nuclear instrumentation system/intermediate range/fission lionization chamber/ultra wide rang/test at reactor分类
能源科技引用本文复制引用
王春池,肖伟,刘佳奇,石云皓,胡婵,邱顺利,葛孟团,周宇琳,董进诚..核测量用裂变电离室宽量程中子注量率测量性能验证[J].辐射防护,2024,44(4):343-348,6.基金项目
国家科技重大专项(ZX06002012) （ZX06002012）
湖北省自然科学基金(2023AFB425). （2023AFB425）
