Energy and angular distribution of recoil proton of fast neutron in scintillation fiber:a simulation study  

作　　者：MA Qingli TANG Shibiao ZOU Jiwei 

机构地区：[1]Electronics Department, Electronic Engineering Institute, Hefei 230038, China [2]Department of Modem Physics, University of Science and Technology of China, Hefei 230026, China [3]Department of Scientific Research, Electronic Engineering Institute, Hefei 230038, China

出　　处：《Nuclear Science and Techniques》2009年第1期42-45,共4页核技术（英文）

基　　金：Supported by National Natural Science Foundation of China(Grant No.60602065)

摘　　要：Due to their low cost,big reaction cross-section with neutrons,flexibility,and convenience for long distance data transfer,plastic scintillation fibers(PSF)have been increasingly used as detectors or sensors for high-energy neutron radiography.In this paper,Geant4 Monte Carlo simulation tool was used to obtain some characteristics of energy and angular distributions of recoil protons in plastic scintillation fibers irradiated by fast neutrons.The plastic fiber with BCF-20 as the core and an acrylic outer cladding was used in the simulation.The results show that there is a big range of energy and angular distribution of recoil protons in energies varying inversely with the recoil angle.Due to their low cost, big reaction cross-section with neutrons, flexibility, and convenience for long distance data transfer, plastic scintillation fibers （PSF） have been increasingly used as detectors or sensors for high-energy neutron radiography. In this paper, Geant4 Monte Carlo simulation tool was used to obtain some characteristics of energy and angular distributions of recoil protons in plastic scintillation fibers irradiated by fast neutrons. The plastic fiber with BCF-20 as the core and an acrylic outer cladding was used in the simulation. The results show that there is a big range of energy and angular distribution of recoil protons in energies varying inversely with the recoil angle.

关 键 词：能量分布 快中子照射 辐射线 核技术 

分 类 号：O57[理学—粒子物理与原子核物理]