Anti-Thermal-Quenching Radioluminescence and High-Temperature X-ray Imaging of Tb3+-Doped Glass Scintillators

• • The Tb3+-doped glass scintillator achieves a record radioluminescence intensity of 350% of a standard BGO crystal, enabling higher sensitivity in X-ray detection systems. • • The material exhibits anti-thermal-quenching behavior: RL intensity at 633 K is 143% of its room-temperature value, whereas BGO and CsI:Tl drop to ~1%, ensuring reliable operation in high-temperature environments up to at least 633 K. • • High imaging resolution of 24 lp mm−1 is achieved, surpassing many commercial scintillators, which is critical for non-destructive testing and high-resolution X-ray imaging. • • Optical transmittance exceeds 88% at 542 nm, ensuring efficient light collection and minimal signal loss in imaging systems.