Digital positron lifetime spectrometer for measurements of radioactive materials
Digital positron lifetime spectrometer for measurements of radioactive materials
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DOI：
10.1002/pssc.200675816
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发表时间：
2006-12
期刊：
影响因子：
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通讯作者：
M. Jardin;A. Almazouzi;M. Lambrecht;A. Rempel;Y. Nagai;E. Walle
中科院分区：
文献类型：
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作者：
M. Jardin;A. Almazouzi;M. Lambrecht;A. Rempel;Y. Nagai;E. Walle
研制了一台用于2GBq级放射性物质测量的数字式正电子寿命谱仪，并进行了成功的测试。该设备包括一个最先进的数字示波器和三个以三重符合模式运行的可移动闪烁探测器。实验获得了188 ps的时间分辨率，用于放射性样品的正电子寿命测量。还通过比较具有和不具有高60 Co背景辐射的已知材料的测量，证明了测量放射性样品的能力。本文报道了该装置的性能、结构、安装、优化和校准。（© 2007 WILEY-VCH Verlag GmbH & Co. KGaA，魏因海姆）
A digital positron lifetime spectrometer for the measurements of 2 GBq level radioactive materials has been constructed and successfully tested. The equipment consists of a state-of-the-art digital oscilloscope and three movable scintillation detectors operating in triple-coincidence mode. The time resolution of 188 ps full-width at half-maximum (FWHM) is achieved for the positron lifetime measurements of radioactive specimens. Also by comparison of measurements of well-known material with and without high 60Co background radiation the ability to measure radioactive specimens is proved. In this paper the performance, construction, installation, optimization and calibration of the setup is reported. (© 2007 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)