Fast light of CsI(Na) crystals

SUN Xi-Lei; HU Tao; ZHOU Li; CAO Jun; WANG Yi-Fang; ZHAN Liang; YU Bo-Xiang; CAI Xiao; FANG Jian; XIE Yu-Guang; AN Zheng-Hua; WANG Zhi-Gang; XUE Zhen; ZHANG Ai-Wu; NING Fei-Peng; GE Yong-Shuai; LIU Ying-Biao

doi:10.1088/1674-1137/35/12/009

Chinese Physics C> 2011, Vol. 35> Issue(12) : 1130-1133 DOI: 10.1088/1674-1137/35/12/009

Fast light of CsI(Na) crystals

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The responses of different common alkali halide crystals to alpha-rays and gamma-rays are tested in this research. It is found that only CsI(Na) crystals have significantly different waveforms between alpha and gamma scintillations, while others do not exhibit this phenomena. The rise time of the fast light is about 5 ns and the decay time is 17±12 ns. 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.

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SUN Xi-Lei, HU Tao, ZHOU Li, CAO Jun, WANG Yi-Fang, ZHAN Liang, YU Bo-Xiang, CAI Xiao, FANG Jian, XIE Yu-Guang, AN Zheng-Hua, WANG Zhi-Gang, XUE Zhen, ZHANG Ai-Wu, NING Fei-Peng, GE Yong-Shuai, LIU Ying-Biao, Fast light of CsI(Na) crystals[J]. Chinese Physics C, 2011, 35(12): 1130-1133. doi: 10.1088/1674-1137/35/12/009

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Received: 2011-03-14
Revised: 2011-04-27

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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

Fast light of CsI(Na) crystals

Corresponding author: SUN Xi-Lei,

Received Date: 2011-03-14

Accepted Date: 2011-04-27

Available Online: 2011-12-05

Abstract: The responses of different common alkali halide crystals to alpha-rays and gamma-rays are tested in this research. It is found that only CsI(Na) crystals have significantly different waveforms between alpha and gamma scintillations, while others do not exhibit this phenomena. The rise time of the fast light is about 5 ns and the decay time is 17±12 ns. 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.

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Fast light of CsI(Na) crystals

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