Attenuation characteristics of a Ce:Gd3Al2Ga3O12 scintillator

被引：0

作者：

Uchida, Nagomi ^{[1
]}

Takahashi, Hiromitsu ^{[1
]}

Ohno, Masanori ^{[1
,2
,3
]}

Mizuno, Tsunefumi ^{[1
]}

Fukazawa, Yasushi ^{[1
]}

Yoshino, Masao ^{[4
]}

Kamada, Kei ^{[5
]}

Yokota, Yuui ^{[5
,6
]}

Yoshikawa, Akira ^{[4
,5
,6
]}

机构：

[1] Hiroshima University, Department of Physical Science, Hiroshima,739-8526, Japan

[2] Eötvös University, Institute of Physics, Pázmány Péter sétány 1/A, Budapest,1117, Hungary

[3] MTA-Eötvös University Lendület Hot Universe and Astrophysics Research Group, Pázmány Péter sétány 1/A, Budapest,1117, Hungary

[4] Institute for Materials Research (IMR), Tohoku University, 2-1-1, Katahira, Aoba-ku, Sendai, Miyagi,980-8577, Japan

[5] New Industry Creation Hatchery Center (NICHe), Tohoku University, 6-6-10, Aoba, Aramaki, Aoba-ku, Sendai, Miyagi,980-8579, Japan

[6] C & A corporation, T-Biz, 6-6-40, Aoba, Aramaki, Aoba-ku, Sendai, Miyagi,980-8579, Japan

来源：

Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment | 2021年 / 986卷

基金：

日本学术振兴会;

关键词：

Light - Geometry - Scintillation counters - Gallium compounds - Photons - Aluminum compounds - Cerium compounds - Scintillation;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

Attenuation characteristics of scintillation photons from Ce-doped Gd3Al2Ga3O12 (Ce:GAGG) scintillators were investigated by measuring samples of various sizes. Scintillation light is attenuated by two factors. The first is self-absorption of the Ce:GAGG scintillator itself, and the second is geometrical effects such as reflection properties caused by reflector wrapping. The attenuation coefficient of the Ce:GAGGs was determined as 0.001550.00006 mm −1 indicating that the scintillation light decays to 1/e as it passes approximately 645 ± 26 mm through the Ce:GAGG. This attenuation does not affect the entire wavelength range; however, it significantly occurs only in the wavelength range from 460 nm to 510 nm where emission and absorption overlap. In the narrow Ce:GAGG scintillator used in this experiment, the geometrical attenuation effect was in the overall wavelength, and the attenuation coefficient was 0.010 ± 0.001 mm −1. In this setup, the self-absorption effect only occupied 10% of the whole attenuation, while geometrical attenuation significantly affected the number of detected photons. © 2020 Elsevier B.V.

引用