Scintillation response of Ga2O3 excited by laser accelerated ultra-high dose rate proton beam

作     者：Liang, Yulan Xu, Tianqi Xu, Shirui Wu, Qingfan Zhang, Chaoyi Chen, Haoran Han, Qihang Hua, Chenhao Xue, Jianming Tang, Huili Liu, Bo Ma, Wenjun 

作者机构：State Key Laboratory of Nuclear Physics and Technology School of Physics Peking University Beijing100871 China MOE Key Laboratory of Advanced Micro-Structure Materials School of Physics Science and Engineering Tongji University Shanghai200092 China 

出 版 物：《arXiv》 (arXiv)

年 卷 期：2025年

核心收录：

主　　题：Excitons 

摘      要：The temporal and spectral profile of β-Ga2O3 excited by ultra-high dose rate proton beam has been investigated. The unique short bright and broad spectra characteristics of laser-accelerated protons were utilized to investigate the scintillation response difference under different dose rate. Our results indicate that for sufficiently high dose rate delivered, the average decay time of β-Ga2O3 decreases by a factor of two. The overlap of carriers generated by high dose rate protons enhances the nonradiative recombination like Auger recombination and exciton-exciton annihilation which shortens the decay time significantly. The study opens up new avenues for investigating the luminescent properties of other scintillator materials using laser-accelerated high dose rate proton beams. Copyright © 2025, The Authors. All rights reserved.