【作者】 夏良斌； 欧阳晓平； 韩和同； 张建福； 张小东；

【Author】 XIA Liang-bin,OUYANG Xiao-ping,HAN He-tong,ZHANG Jian-fu,ZHANG Xiao-dong (Northwest Institute of Nuclear Technology,Xi’an of Shaanxi Prov.710024,China)

【机构】 西北核技术研究所；

【摘要】 基于射线与物质相互作用特点,提出了一种适用于强流脉冲伽马时间谱测量的散射电子方法,该方法采用W转换靶和电子穿透型的闪烁薄膜,利用MCNP程序对靶材和厚度、闪烁体厚度以及结构参数进行优化,设计的伽马探测器在0.4～5MeV能区内具有平坦的能量响应,对于Co源1.25 MeV射线采用有机闪烁体ST401和光电管时灵敏度为5.46×10^-21C·cm²/γ。实际应用中该探测器获得了与闪烁探测器一致的波形。更多还原

【Abstract】 Based on the characters of scattering electrons,a new method suitable for measuring high intensity pulsed gamma-ray sources is proposed.Tungsten target and scintillation film are used in this method.The performances of the detector under several conditions were studied by Monte Carlo simulation using the MCNP code,the detector has a relatively flat energy response in the range 0.4 to 5 MeV.Using Co-60 1.25MeV gamma ray,the sensitivity for the detector with organic scitillation ST401 and photodiode is measured to be 5.46E-21C·cm~2/γ.更多还原