Digital positron lifetime spectroscopy at EPOS
Digital positron lifetime spectroscopy at EPOS
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DOI：
10.1016/j.apsusc.2008.05.215
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发表时间：
2008-10
影响因子：
6.7
通讯作者：
A. Krille;R. Krause-Rehberg;M. Jungmann;F. Bečvář;G. Brauer
中科院分区：
文献类型：
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作者：
A. Krille;R. Krause-Rehberg;M. Jungmann;F. Bečvář;G. Brauer
随着测量正电子寿命的数字设备变得更便宜和更广泛地使用，决定使用EPOS，易北河正电子源将直接采集光电倍增管的信号，并通过数字手段在线或离线进行评估。EPOS寿命光谱仪仍然使用同位素源，计时分辨率约为170ps(60Co)，这与模拟设备相比是很好的。当易北岛将使用重合设置时，预计会有明显的改进。然而，软件也需要进一步改进：虽然目标之一当然是实现最佳的时间分辨率，但还有运行时和可扩展性方面的问题。将介绍评价结果，并将其与其他小组的结果进行比较。
As the digital equipment to measure positron lifetimes gets cheaper and more widely used, it is decided that EPOS, the ELBE positron source will sample the signals from the photomultipliers directly and evaluate it online or offline by digital means. Still using isotope sources, the EPOS lifetime spectrometer results in a timing resolution of around 170ps (with60Co), which compares good to analog equipment. A distinct improvement is expected when a coincidence setup will be used at ELBE. However, also the software needs further improvement: while one of the goals is of course to achieve the best time resolution, there is also the aspect of runtime and expandability. Results of evaluations will be presented and compared with results from other groups.