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2008 | 113 | 5 | 1279-1284
Article title

Performance of a High-Resolution Digital Positron-Lifetime Spectrometer

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Languages of publication
EN
Abstracts
EN
This work describes a digital positron-lifetime spectrometer based on two ultrafast digitizers. Performance of the digital spectrometer in conditions of a routine measurement is compared with an analogue setup connected to the same detectors. It was found that engagement of the digital setup leads to an improvement of timing resolution (FWHM for ^{22}Na) from 169 ps for the traditional analogue setup to 146 ps for the digital setup. The coincidence count rate for 1.2 MBq ^{22}Na source is 75-80 coinc./s for both configurations. These results clearly demonstrate the advantages of the digital timing over the traditional analogue setup.
Keywords
EN
Contributors
author
  • Faculty of Mathematics and Physics, Charles University in Prague, V Holešovičkách 2, Praha 8, CZ-180 00, Czech Republic
author
  • Faculty of Mathematics and Physics, Charles University in Prague, V Holešovičkách 2, Praha 8, CZ-180 00, Czech Republic
author
  • Faculty of Mathematics and Physics, Charles University in Prague, V Holešovičkách 2, Praha 8, CZ-180 00, Czech Republic
References
  • 1. J. Nissilä, K. Rytsölä, R. Aavikko, A. Laakso, K. Saarinen, P. Hautojärvi, Nucl. Instrum. Methods Phys. Res. A 538, 778 (2005)
  • 2. H. Saito, Y. Nagashima, T. Kurihara, T. Hyodo, Nucl. Intrum. Methods Phys. Res. A 487, 612 (2002)
  • 3. F. Bečvář, J.Čížek, L. Lešt'ák, I. Novotný, I. Procházka, F. Šebesta, Nucl. Instrum. Methods Phys. Res. A 443, 557 (2000)
  • 5. A. Seeger, F. Banhart, Phys. Status Solidi A 102, 171 (1987)
  • 4. F. Bečvář, Nucl. Instrum. Methods Phys. Res. B 261, 871 (2007)
Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.bwnjournal-article-appv113n502kz
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