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ABSTRACT Glass scintillators, prized for their superior processability, structural flexibility, and cost‐effectiveness, hold significant promise for X‐ray imaging. However, their practical deployment is impeded by three critical challenges: severe radiation‐induced coloration under prolonged X‐ray exposure, intrinsically low scintillation efficiency, and inadequate thermal stability for high‐temperature operation. Herein, we propose a synergistic material design strategy that integrates Eu 2+ incorporation via C powder‐assisted reduction with in situ precipitation of Na 5 Lu 9 F 32 nanocrystals through controlled thermal treatment. The resultant transparent glass–ceramic (GC) achieves breakthrough metrics, including an X‐ray excited luminescence (XEL) integrated intensity reaching 220% of that of BGO, negligible transmittance loss after 50 Gy X ray irradiation, and exceptional anti‐thermal quenching behavior, retaining 119% of the room‐temperature XEL at 393 K. Its intrinsic chemical durability ensures environmental stability, while high spatial resolution of 23.8 lp/mm and reliable X‐ray imaging at elevated temperatures further highlight the practical applicability. These advances establish Eu 2+ doped Na 5 Lu 9 F 32 GCs as highly promising scintillators for extreme‐condition radiation detection.
Pan et al. (Mon,) studied this question.