Digital setup for Doppler broadening spectroscopy

被引：2
|
作者：
Cizek, J. [1 ]
Vlcek, M. [1 ]
Prochazka, I. [1 ]
机构：
[1] Charles Univ Prague, Fac Math & Phys, CZ-18000 Prague 8, Czech Republic
来源：
12TH INTERNATIONAL WORKSHOP ON SLOW POSITRON BEAM TECHNIQUES (SLOPOS12) | 2011年 / 262卷
关键词：
D O I：
10.1088/1742-6596/262/1/012014
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
New digital spectrometer for measurement of the Doppler shift of annihilation photons was developed and tested in this work. Digital spectrometer uses a fast 12-bit digitizer for direct sampling of signals from HPGe detectors. Analysis of sampled waveforms is performed off-line in software. Performance of the new digital setup was compared with its traditional analogue counterpart. Superior energy resolution was achieved in the digital setup. Moreover, the digital setup allows for a better control of the shape of detector signals. This enables to eliminate undesired signals damaged by pile-up effects or by ballistic deficit.
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页数：4
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