Experiment investigation on pulsed gamma-ray fluence rate effect on Yb-doped yttrium aluminum garnet scintillator

Abstract

As an ultrafast inorganic scintillator, Yb-doped Y3Al5O12 [yttrium aluminum garnet (YAG)] crystals have potential applications in various fields, such as ultrafast radiation detection, solar neutrino detection, pulsed radiation imaging, and nuclear reaction kinetics diagnosis. In this work, the fluence rate effect of pulsed γ rays on the Yb:YAG scintillation crystal was investigated at the “QiangGuang-I” facility. The experiment results show that the fluence rate linear response upper limit of the Yb:YAG crystal is about 9.1 × 1018 MeV cm−2 s−1. The Yb:YAG crystal changed from colorless to yellow, and the relative light output decreased to 63% of its initial value after the irradiations, which were attributed to the radiation induced damage. It is deduced that oxygen vacancies and divalent Yb cations were generated after the irradiations.

Nonlinear Response and Origin of Slow Component of Two-Dimensional Perovskite Scintillator

“…21 Moreover, the simplicity and cost-effectiveness of the synthesis method make 2D perovskites more convenient to study compared to traditional inorganic scintillators like LaBr 3 :Ce 22,23 and Yb:YAG. 24,25 The nonlinear response of a scintillator, which results in reduced brightness under pulsed and high dose-rate radiation environments, 26−28 is crucial for accurately measuring radiation source intensity. Numerous studies have investigated the factors influencing the nonlinear response of 2D perovskite single crystals, such as biexciton formation, 29,30 triexciton effects, 31,32 and delayed PL emission.…”

“…Additionally, (C 8 H 12 N) 2 Pb­(Br 0.95 Cl 0.05 ) 4 perovskite single crystals showed excellent performance in detecting neutrons and gamma-rays . Moreover, the simplicity and cost-effectiveness of the synthesis method make 2D perovskites more convenient to study compared to traditional inorganic scintillators like LaBr 3 :Ce , and Yb:YAG. , …”

Crystal growth and spectral properties of (Yb0.15Lu0.85xY0.85-0.85x)3Al5O12 single crystals

“…Besides, Yb:YAG is also a very important inorganic scintillator since it possesses an ultrafast decay time (0.41 ns excited by 266 nm pulsed laser) [5] , which shows potential applications in pulsed radiation imaging, inertial confinement fusion (ICF) diagnosis, nuclear reaction kinetics diagnosis, and homeland security [6][7][8][9] .…”