SAMOP 2021 – wissenschaftliches Programm
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MS: Fachverband Massenspektrometrie
MS 4: Storage Rings
MS 4.4: Vortrag
Freitag, 24. September 2021, 15:00–15:15, H2
High resolution and fast Schottky spectroscopy of short-lived fragments in isochronous heavy ion storage rings — •Shahab Sanjari1,2, Klaus Blaum3, Dmytro Dmytriiev1,4, David Freire Fernández1,3, Yuri A. Litvinov4, and Wolfram Korten5 — 1GSI Helmholtz Center, D-64291 Darmstadt, Germany — 2Aachen University of Applied Sciences, D-52005 Aachen, Germany — 3Max Planck Institute for Nuclear Physics, D-69117 Heidelberg, Germany — 4Heidelberg University, D-69117 Heidelberg, Germany — 5IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
Using non-destructive Schottky detectors, precise determination of masses and lifetimes of exotic nuclear species and their isomeric states can be performed at the experimental storage ring ESR (GSI / FAIR) on cooled fragments (standard mode of operation) and hot fragments (isochronous mode). Single ion sensitivity has regularly been achieved in the past using the former mode of operation. Up to now only destructive detection methods were employed in the latter mode. In this work we describe how the limits of time resolution can be pushed in conjunction with non-destructive and time-resolved frequency analysis of signals acquired from recently developed detectors. These detectors deliver higher sensitivity as well as a higher frequency resolution. This approach will open new opportunities to explore highly charged exotic nuclei with lifetimes down to several tens of milliseconds and energies as low as 100 keV. It is as well a milestone achievement towards the realization of precision mass and lifetime spectrometry at future Collector Ring of FAIR.