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          Document History for Document ID 475668

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Document Version Version Comment Date Status
475668.0 [No comment] 17.06.2010 11:32 Released

ID: 475668.0, MPI für Kernphysik / Spectroscopy and Dynamics of Trapped and Stored Ions
Direct measurement of the 4.6 MeV isomer in stored bare 133Sb ions
Authors:Sun, B.; Knöbel, R.; Geissel, H.; Litvinov, Yuri A.; Walker, P. M.; Blaum, Klaus; Bosch, F.; Boutin, D.; Brandau, C.; Chen, L.; Cullen, I. J.; Dolinskii, A.; Fabian, B.; Hausmann, M.; Kozhuharov, C.; Kurcewicz, J.; Litvinov, S. A..; Liu, Z.; Mazzocco, M.; Meng, J.; Montes, F.; Münzenberg, G.; Musumarra, A.; Nakajima, S.; Nociforo, C.; Nolden, F.; Ohtsubo, T.; Ozawa, A.; Patyk, Z.; Plaß, W. R.; Scheidenberger, C.; Steck, M.; Suzuki, T.; Weick, H.; Winckler, Nicolas; Winkler, M.; Yamaguchi, T.
Language:English
Date of Publication (YYYY-MM-DD):2010-04-15
Title of Journal:Physics Letters B
Journal Abbrev.:Phys. Lett. B
Volume:688
Issue / Number:4-5
Start Page:294
End Page:297
Review Status:Peer-review
Audience:Experts Only
Abstract / Description:The core-excited isomer in fully-ionized 133Sb has been directly studied for the first time by applying the novel technique of isochronous mass spectrometry at GSI. The neutron-rich nuclides in high charge states were produced by projectile fission of 411 MeV A 238U ions, separated in flight by the fragment separator (FRS) and stored in the isochronous storage ring (ESR). The measured excitation energy is 4.56(10) MeV. The neutral-atom half-life is known to be 17 μs. This is the shortest-lived isomer measured directly with mass spectrometry techniques. The extended in-flight half-life of the bare ions in the ESR, which is due to the exclusion of the strong internal conversion, demonstrates that there should be another nuclear level above that identified from isomer-decay spectroscopy, in support of shell-model calculations. This measurement opens up a new half-life domain for storage-ring measurements.
External Publication Status:published
Document Type:Article
Affiliations:MPI für Kernphysik/Group of K. Blaum
External Affiliations:Justus Liebig Universität Giessen, Germany
School of Physics and Nuclear Energy Engineering, Beihang University, Beijing, PR China
GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, Germany
Department of Physics, University of Surrey, Guildford, UK
National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, USA
School of Physics and Astronomy, University of Edinburgh, UK
Dipartimento di Fisica and INFN-Sezione di Padova, Italy
INFN – Laboratori Nazionali del Sud, Catania, Italy
Department of Physics, Saitama University, Japan
Department of Physics, Niigata University, Japan
Institute of Physics, University of Tsukuba, Ibaraki, Japan
Soltan Institute for Nuclear Studies, Warszawa, Poland
Identifiers:DOI:10.1016/j.physletb.2010.04.020