NDLI: First high-statistics and high-resolution recoil-ion data from the WITCH retardation spectrometer

Content Provider	Springer Nature Link
Author	Finlay, P. Breitenfeldt, M. Porobić, T. Wursten, E. Ban, G. Beck, M. Couratin, C. Fabian, X. Fléchard, X. Friedag, P. Glück, F. Herlert, A. Knecht, A. Kozlov, V. Y. Liénard, E. Soti, G. Tandecki, M. Traykov, E. Van Gorp, S. Weinheimer, Ch. Zákoucký, D. Severijns, N.
Copyright Year	2016
Abstract	The first high-statistics and high-resolution data set for the integrated recoil-ion energy spectrum following the $ \beta^+$ decay of 35Ar 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 2ns and position resolution of 0.1mm 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 35Ar decay using the WITCH spectrometer.
Starting Page	1
Ending Page	16
Page Count	16
File Format	PDF
ISSN	14346001
Journal	The European Physical Journal A - Hadrons and Nuclei
Volume Number	52
Issue Number	7
e-ISSN	1434601X
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2016-07-27
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Nuclear Physics, Heavy Ions, Hadrons Particle and Nuclear Physics Nuclear Fusion
Content Type	Text
Resource Type	Article
Subject	Nuclear and High Energy Physics

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