The fast light of CsI(Na) crystals
Xilei Sun, Junguang Lu, Tao Hu, Li Zhou, Jun Cao, Yifang Wang, Liang, Zhan, Boxiang Yu, Xiao Cai, Jian Fang, Yuguang Xie, Zhenghua An, Zhigang, Wang, Zhen Xue, Aiwu Zhang, Qiwen Lu, Feipeng Ning, Yongshuai Ge, Yingbiao, Liu
TL;DR
This paper investigates the scintillation responses of various alkali halide crystals to alpha and gamma radiation, highlighting the unique fast light phenomenon in CsI(Na) crystals and its underlying mechanism.
Contribution
It identifies CsI(Na) as the only common alkali halide crystal with distinct alpha and gamma waveform differences and explains the origin of its fast light.
Findings
CsI(Na) shows significant waveform differences between alpha and gamma scintillations.
Fast light in CsI(Na) arises from electron-hole recombination.
Self-absorption limits fast light emission in CsI(Tl) and NaI(Tl).
Abstract
The responds of different common alkali halide crystals to alpha-rays and gamma-rays are tested in our research. It is found that only CsI(Na) crystals have significantly different waveforms between alpha and gamma scintillations, while others have not this phenomena. It is suggested that the fast light of CsI(Na) crystals arises from the recombination of free electrons with self-trapped holes of the host crystal CsI. Self-absorption limits the emission of fast light of CsI(Tl) and NaI(Tl) crystals.
Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.