TY - JOUR
T1 - Attenuation characteristics of a Ce:Gd3Al2Ga3O12 scintillator
AU - Uchida, Nagomi
AU - Takahashi, Hiromitsu
AU - Ohno, Masanori
AU - Mizuno, Tsunefumi
AU - Fukazawa, Yasushi
AU - Yoshino, Masao
AU - Kamada, Kei
AU - Yokota, Yuui
AU - Yoshikawa, Akira
N1 - Funding Information:
The present study was supported through KAKENHI (Grant No. 25302003 ) from the Japan Society for the Promotion of Science (JSPS) .
Publisher Copyright:
© 2020 Elsevier B.V.
PY - 2021/1/11
Y1 - 2021/1/11
N2 - 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 0.00155±0.00006 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.
AB - 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 0.00155±0.00006 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.
KW - Ce:GAGG
KW - Scintillator
KW - Self-absorption
UR - http://www.scopus.com/inward/record.url?scp=85092228576&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85092228576&partnerID=8YFLogxK
U2 - 10.1016/j.nima.2020.164725
DO - 10.1016/j.nima.2020.164725
M3 - Article
AN - SCOPUS:85092228576
SN - 0168-9002
VL - 986
JO - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
JF - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
M1 - 164725
ER -