TY - JOUR
T1 - Radiation resistance and temperature dependence of Ce:GPS scintillation crystal
AU - Kim, Chanho
AU - Kim, Dongyoung
AU - Lee, Yeeeun
AU - Park, Chansun
AU - Ullah, Muhammad Nasir
AU - Kim, Duckhyun
AU - Kwon, Inyong
AU - Hur, Seop
AU - Yeom, Jung Yeol
N1 - Funding Information:
This work was supported by the National Research Foundation of Korea ( NRF-2017M2A8A4017932 , NRF-2020R1A2C2007376 , NRF-2020R1I1A1A01070761 and NRF-2020M2A8A4023713 ).
Publisher Copyright:
© 2021 Elsevier Ltd
PY - 2021/6
Y1 - 2021/6
N2 - We investigated the scintillation properties of Ce:GPS (Ce:Gd2Si2O7), Pr:LuAG (Pr:Lu3Al5O12), and LYSO (Lu2(1 − x)Y2xSiO5) scintillators in high-temperature and high-radiation environments to evaluate their potential application in harsh environments. The temperature dependence of the scintillators was investigated from room temperature to 350 °C. The LYSO scintillator was very vulnerable to high temperatures while the light output of Pr:LuAG scintillator decreased rapidly above 200 °C. The Ce:GPS scintillator demonstrated almost constant light output to 250 °C and decrease about 30% at 300 °C. We also measured the changes in the light yield and transmittance of the scintillators in the range of 0–3.83 MGy. At the highest gamma rays radiation dose, the light output of Ce:GPS, Pr:LuAG, and LYSO compared to the reference scintillator were 15.3% ± 1.8%, 36.7% ± 3.1%, and 73.4% ± 2.6%, respectively. However, Ce:GPS demonstrated a pronounced and fast recovery via thermal annealing, and it recovered within 30 minutes at 400 °C and 1 hour at 300 °C. These properties permit the potential application of Ce:GPS in extreme environments.
AB - We investigated the scintillation properties of Ce:GPS (Ce:Gd2Si2O7), Pr:LuAG (Pr:Lu3Al5O12), and LYSO (Lu2(1 − x)Y2xSiO5) scintillators in high-temperature and high-radiation environments to evaluate their potential application in harsh environments. The temperature dependence of the scintillators was investigated from room temperature to 350 °C. The LYSO scintillator was very vulnerable to high temperatures while the light output of Pr:LuAG scintillator decreased rapidly above 200 °C. The Ce:GPS scintillator demonstrated almost constant light output to 250 °C and decrease about 30% at 300 °C. We also measured the changes in the light yield and transmittance of the scintillators in the range of 0–3.83 MGy. At the highest gamma rays radiation dose, the light output of Ce:GPS, Pr:LuAG, and LYSO compared to the reference scintillator were 15.3% ± 1.8%, 36.7% ± 3.1%, and 73.4% ± 2.6%, respectively. However, Ce:GPS demonstrated a pronounced and fast recovery via thermal annealing, and it recovered within 30 minutes at 400 °C and 1 hour at 300 °C. These properties permit the potential application of Ce:GPS in extreme environments.
KW - Ce:GPS
KW - Radiation resistance
KW - Recovery of damaged crystals
KW - Scintillators
KW - Temperature dependence
UR - http://www.scopus.com/inward/record.url?scp=85101420316&partnerID=8YFLogxK
U2 - 10.1016/j.radphyschem.2021.109396
DO - 10.1016/j.radphyschem.2021.109396
M3 - Article
AN - SCOPUS:85101420316
VL - 183
JO - Radiation Physics and Chemistry
JF - Radiation Physics and Chemistry
SN - 0969-806X
M1 - 109396
ER -