A compact positron annihilation lifetime spectrometer

LI Dao-Wu; LIU Jun-Hui; ZHANG Zhi-Ming; WANG Bao-Yi; ZHANG Tian-Bao; WEI Long

doi:10.1088/1674-1137/35/1/021

Chinese Physics C> 2011, Vol. 35> Issue(1) : 100-103 DOI: 10.1088/1674-1137/35/1/021

A compact positron annihilation lifetime spectrometer

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Abstract：
Using LYSO scintillator coupled on HAMAMATSU R9800 (a fast photomultiplier) to form the small size γ-ray detectors, a compact lifetime spectrometer has been built for the positron annihilation experiments. The system time resolution FWHM=193 ps and the coincidence counting rate ～8 cps/μCi were achieved. A lifetime value of 219±1 ps of positron annihilation in well annealed Si was tested, which is in agreement with the typical values published in the previous lectures.

References

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CHANG Tian-Bao, YIN Ding-Zhen, CAO Chuan et al. Nucl. Instrum. Methods. A, 1987, 256: 3982 Neiler J H, Bell P R. In: Alpha-, Beta- and Gamma-ray Spectroscopy. ed., Siegbahn K. North-Holland, Amsterdam, 1965, 3013 Saito H, Hyodo T. Materials Science Forum, Vols. 445-446, 2004, 457-4614 WANG B, CAO X, YU R et al. Materials Science Forum Vols, 445-446, 2004, 513-5155 Moses W W, Derenzo S E. IEEE Transactions on Nuclear Science, 1999, Ns-46: 474-4786 Haaks M, Valentini R, Vianden R. Phys. Stat. Sol. (c) 4, 2007, 10: 4036-4039

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LI Dao-Wu, LIU Jun-Hui, ZHANG Zhi-Ming, WANG Bao-Yi, ZHANG Tian-Bao and WEI Long. A compact positron annihilation lifetime spectrometer[J]. Chinese Physics C, 2011, 35(1): 100-103. doi: 10.1088/1674-1137/35/1/021

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Received: 2010-04-01
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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

A compact positron annihilation lifetime spectrometer

Received Date: 2010-04-01

Accepted Date: 2010-06-01

Available Online: 2011-01-05

Abstract: Using LYSO scintillator coupled on HAMAMATSU R9800 (a fast photomultiplier) to form the small size γ-ray detectors, a compact lifetime spectrometer has been built for the positron annihilation experiments. The system time resolution FWHM=193 ps and the coincidence counting rate ～8 cps/μCi were achieved. A lifetime value of 219±1 ps of positron annihilation in well annealed Si was tested, which is in agreement with the typical values published in the previous lectures.

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A compact positron annihilation lifetime spectrometer

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A compact positron annihilation lifetime spectrometer

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