摘要
"核-光转换"中子探测器是以惰性气体为介质将裂变碎片能量转换为光辐射的裂变室,拥有电离探测器所没有的优点:不需要供电电源;信号传输方式采用光导或光纤,而不是绝缘电缆;对伽马辐射极不灵敏;输出信号较大,可以避免在探测器附近使用前置放大器。根据"核-光转换"中子测量系统的特点,采用Geant4模拟了铀裂变靶厚度、惰性气体成分、腔体材料等对到达惰性气体的裂变碎片和可见光的影响,给出了NOC结构设计的最佳参数和中子能量响应。
Nucear-optical converters（NOC） are fission chambers based upon fission fragement energy conversion to optical radiation in gas luminescent media.NOCs offer a number of potential advantages over ionization detectors.The detectors require no power supply.Signals are transmitted via light-pipe or fiber optics rather than insulated electrical cable.The detectors are less sensitive to gamma radiation.NOC can produce large signals,obviating the need for pre-amplifiers near the detector.According to the characteristics of NOC,under the different conditions,like as the thickness of U target,type of inert gases,material of container,fission fragments and light intensities was simulated by Geant4;We obtained the optimal parameter to design the NOCs,and calculated the energy response of neutron.
出处
《核电子学与探测技术》
CAS
CSCD
北大核心
2012年第1期95-97,共3页
Nuclear Electronics & Detection Technology
基金
中国工程物理研究院发展基金(2010B0103003)
关键词
核-光转换
裂变室
中子能量响应
GEANT4
nuclear-optical converter
fission chamber
energy response of neutron
Geant4
