Timing properties and pulse shape discrimination of LAB-based liquid scintillator  

作　　者：李小波 肖华林 曹俊 李金 阮锡超 衡月昆 

机构地区：[1]Experimental Center,Institute of High Energy Physics,Chinese Academy of Sciences [2]Graduate University of Chinese Academy of Sciences [3]College of Nuclear Science and Technology,Beijing Normal University [4]China Institute of Atomic Energy

出　　处：《Chinese Physics C》2011年第11期1026-1032,共7页中国物理C（英文版）

基　　金：Supported by National Natural Science Foundation of China (10890094, 11011120080)

摘　　要：Linear Alkyl Benzene （LAB） is a promising liquid scintillator solvent in neutrino experiments because it has many appealing properties. The timing properties of LAB-based liquid scintillator have been studied through ultraviolet and ionization excitation in this study. The decay time of LAB, PPO and bis-MSB is found to be 48.6 ns, 1.55 ns and 1.5 ns, respectively. A model can describe the absorption and re-emission process between PPO and bis-MSB perfectly. The energy transfer time between LAB and PPO with different concentrations can be obtained via another model. We also show that the LAB-based liquid scintillator has good （n, γ） and （α, γ） discrimination power.Linear Alkyl Benzene （LAB） is a promising liquid scintillator solvent in neutrino experiments because it has many appealing properties. The timing properties of LAB-based liquid scintillator have been studied through ultraviolet and ionization excitation in this study. The decay time of LAB, PPO and bis-MSB is found to be 48.6 ns, 1.55 ns and 1.5 ns, respectively. A model can describe the absorption and re-emission process between PPO and bis-MSB perfectly. The energy transfer time between LAB and PPO with different concentrations can be obtained via another model. We also show that the LAB-based liquid scintillator has good （n, γ） and （α, γ） discrimination power.

关 键 词：linear alkyl benzene decay time pulse shape discrimination energy transfer time 

分 类 号：TL812.2[核科学技术—核技术及应用]