Physics – Instrumentation and Detectors
Scientific paper
2011-03-31
Physics
Instrumentation and Detectors
5 pages, 11 figures Submit to Chinese Physics C
Scientific paper
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.
An Zhenghua
Cai Xiao
Cao Jun
Fang Jian
Ge Yongshuai
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