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Luminescence decay curves of the BGO scintillator at UV excitation (λ = 245 nm) measured at different temperatures. The red lines show the fitting to the experimental data using two exponential decay functions: 
= 
for different temperatures. Curve 1: T = 31 K; 
= 20.7 ± 0.19 µs. Curve 2: T = 50 K; = 13.1 ± 0.12 µs. Curve 3: T = 121 K; = 6.8 ± 0.07 µs.
