A new positron annihilation lifetime spectrometer based on DRS4 waveform digitizing board

AN Ran; CHEN Bin; LIU Yan-Fen; YE Bang-Jiao; KONG Wei; Stefan Ritt

doi:10.1088/1674-1137/38/5/056001

Chinese Physics C> 2014, Vol. 38> Issue(5) : 056001 DOI: 10.1088/1674-1137/38/5/056001

A new positron annihilation lifetime spectrometer based on DRS4 waveform digitizing board

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Abstract：
A new simple digital positron lifetime spectrometer has been developed. It includes a DRS4 waveform digitizing board and two scintillation detectors based on the XP2020Q photomultiplier tubes and LaBr₃ scintillators. The DRS4 waveform digitizing can handle small pulses, down to few tens of millivolts, and its time scale linearity and stability are very good. The new system has reached a 206 ps time resolution, which is better than the conventional analog apparatus using the same detectors. These improvements make this spectrometer more simple and convenient in comparison with other spectrometers, and it can be applied to the other scintillation timing measurements with picosecond accuracy.

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[1]

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AN Ran, CHEN Bin, LIU Yan-Fen, YE Bang-Jiao, KONG Wei and Stefan Ritt. A new positron annihilation lifetime spectrometer based on DRS4 waveform digitizing board[J]. Chinese Physics C, 2014, 38(5): 056001. doi: 10.1088/1674-1137/38/5/056001

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Received: 2013-06-17
Revised: 1900-01-01

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通讯作者: 陈斌, [email protected]

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沈阳化工大学材料科学与工程学院沈阳 110142

A new positron annihilation lifetime spectrometer based on DRS4 waveform digitizing board

Corresponding author: AN Ran,

Received Date: 2013-06-17

Accepted Date: 1900-01-01

Available Online: 2014-05-05

Abstract: A new simple digital positron lifetime spectrometer has been developed. It includes a DRS4 waveform digitizing board and two scintillation detectors based on the XP2020Q photomultiplier tubes and LaBr₃ scintillators. The DRS4 waveform digitizing can handle small pulses, down to few tens of millivolts, and its time scale linearity and stability are very good. The new system has reached a 206 ps time resolution, which is better than the conventional analog apparatus using the same detectors. These improvements make this spectrometer more simple and convenient in comparison with other spectrometers, and it can be applied to the other scintillation timing measurements with picosecond accuracy.

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A new positron annihilation lifetime spectrometer based on DRS4 waveform digitizing board

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