Study of pulse shape discrimination of inorganic scintillator including Gd

2015 Fiscal Year Final Research Report

• Project/Area Number: 25420901
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Nuclear engineering
• Research Institution: University of Fukui
• Principal Investigator: Tamagawa Yoichi 福井大学, 工学(系)研究科(研究院), 教授 (40236732)
• Co-Investigator(Kenkyū-buntansha): Ogawa Izumi 福井大学, 大学院工学研究科, 准教授 (20294142) ; Kobayashi Masaaki 大学共同利用機関法人高エネルギー加速器研究機構, 素核研, 名誉教授 (40013388)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Keywords: GAGGシンチレーター / 入射粒子識別 / 発光波形 / α線 / γ線 / 消光係数

Outline of Final Research Achievements

The study of pulse shape discrimination for the inorganic scintillators including Gd was performed. GSO and GAGG crystals ware used for the scintillator and alpha ray and gamma ray ware used for the incident particles. As the result, It was found that GSO crystal can not separate the events of these two particles using PSD method at the room temperature , but GAGG crystal can separate the events using shape indicator method clearly.
From this result, we tried the internal alpha/gamma event separation using large GAGG crystal for the basic study of the double beta decay experiment using GAGG.
The quenching factor for alpha/gamma was also investigated using He ion beam.

Free Research Field

原子核実験　放射線計測