Full‐Inorganic Micro‐Fiber Probe for Real‐Time Radiation Monitoring

Scintillators convert high‐energy radiation into visible luminescence and have been widely applied in various significant fields such as nuclear fusion monitoring, high‐energy particle physics, medical imaging, and geological exploration. The scalable fabrication of scintillating fiber with the desirable combination of uniform size, superior radiation blocking ability, and excellent thermal/radiation stability is a major challenge. Here, a template solidification strategy for fabrication of full‐inorganic and efficient scintillating fiber is presented. The strategy involves the direct solidification of high‐density scintillator melt in a softened silica tube, allowing for the continuous production of small and uniform scintillating fiber. The fabricated scintillating fiber can effectively attenuate radiation up to ≈118 times higher than what conventional silica fiber can. In addition, it exhibits good compatibility with commercial fiber. Using this scintillating fiber, a radiation fiber detector is constructed and its application for online radiation monitoring is demonstrated.