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First high-statistics and high-resolution recoil-ion data from the WITCH retardation spectrometer
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SYSNO ASEP 0471144 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title First high-statistics and high-resolution recoil-ion data from the WITCH retardation spectrometer Author(s) Finlay, P. (BE)
Breitenfeldt, M. (BE)
Porobic, T. (BE)
Wursten, E. (BE)
Ban, G. (FR)
Beck, M. (DE)
Couratin, C. (FR)
Fabian, X. (FR)
Flechard, X. (FR)
Friedag, P. (DE)
Gluck, F. (DE)
Herlert, A. (CH)
Knecht, A. (BE)
Kozlov, V. Y. (BE)
Lienard, E. (FR)
Soti, G. (BE)
Tandecki, M. (BE)
Traykov, E. (BE)
Van Gorp, S. (BE)
Weinheimer, C. (DE)
Zákoucký, Dalibor (UJF-V) RID, SAI, ORCID
Severijns, N. (BE)Number of authors 22 Article number 206 Source Title European Physical Journal A. - : Springer - ISSN 1434-6001
Roč. 52, č. 7 (2016)Number of pages 16 s. Publication form Print - P Language eng - English Country US - United States Keywords beta-decay ; multichannel plate detector Subject RIV BG - Nuclear, Atomic and Molecular Physics, Colliders R&D Projects LG13031 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) LG15052 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Institutional support UJF-V - RVO:61389005 UT WOS 000391616700001 EID SCOPUS 84980016023 DOI 10.1140/epja/i2016-16206-y Annotation The first high-statistics and high-resolution data set for the integrated recoil-ion energy spectrum following the beta(+) decay of Ar-35 has been collected with the WITCH retardation spectrometer located at CERN-ISOLDE. Over 25 million recoil-ion events were recorded on a large-area multichannel plate (MCP) detector with a time-stamp precision of 2 ns and position resolution of 0.1 mm due to the newly upgraded data acquisition based on the LPC Caen FASTER protocol. The number of recoil ions was measured for more than 15 different settings of the retardation potential, complemented by dedicated background and half-life measurements. Previously unidentified systematic effects, including an energy-dependent efficiency of the main MCP and a radiation-induced time-dependent background, have been identified and incorporated into the analysis. However, further understanding and treatment of the radiation-induced background requires additional dedicated measurements and remains the current limiting factor in extracting a beta-neutrino angular correlation coefficient for Ar-35 decay using the WITCH spectrometer. Workplace Nuclear Physics Institute Contact Markéta Sommerová, sommerova@ujf.cas.cz, Tel.: 266 173 228 Year of Publishing 2017
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