EPJ

2021 Impact factor 3.131
EPJ A - Hadrons and Nuclei
Hadrons and Nuclei
Eur. Phys. J. A 16, 51-54 (2003)
DOI: 10.1140/epja/i2002-10073-1

Isomeric decay of $\chem{^{67}Fe}$ -Evidence for deformation

M. Sawicka1, J.M. Daugas2, H. Grawe3, S. Cwiok4, D.L. Balabanski5, 6, 7, R. Béraud8, C. Bingham6, C. Borcea9, M. La Commara10, G. de France2, G. Georgiev5, 7, M. Górska3, 5, R. Grzywacz1, 6, M. Hass11, M. Hellström3, Z. Janas1, M. Lewitowicz2, H. Mach12, I. Matea2, G. Neyens5, C.O' Leary13, F. de Oliveira Santos2, R.D. Page13, M. Pfützner1, Zs. Podolyák14, K. Rykaczewski1, 15, M. Stanoiu2 and J. Zylicz1

1  Institute of Experimental Physics, Warsaw University, PL-00681 Warsaw, Hoza 69, Poland
2  GANIL BP 5027, 14076 Caen Cedex 5, France
3  Gesellschaft für Schwerionenforschung mbH, Darmstadt, D-64291 Darmstadt, Germany
4  Faculty of Physics, Warsaw University of Technology, PL-00662 Warsaw, Koszykowa 75, Poland
5  University of Leuven, IKS, Celestijnenlaan 200 D, B-3001 Leuven, Belgium
6  University of Tennessee, Knoxville, TN 37996, USA
7  St. Kilment Ohridski University of Sofia, BG-1164 Sofia, Bulgaria
8  IPN Lyon, 69622 Villeurbane Cedex, France
9  IAP Bucharest-Marguele P.O. Box MG6, Romania
10  Department of Physics, University of Naples "Federico II", I-80126 Naples, Italy
11  Department of Particle Physics, The Weizmann Institute of Science, 76100 Rehovot, Israel
12  Department of Radiation Sciences, Uppsala University, S-61182, Nyköping, Sweden
13  Oliver Lodge Laboratory, Department of Physics, University of Liverpool, L69 7ZE, UK
14  Department of Physics, University of Surrey, Guildford, GU2 7XH, UK
15  ORNL, Physics Division, Oak Ridge, TN 37830, USA

sawicka@ganil.fr

(Received: 12 August 2002 / Published online: 17 January 2003)

Abstract
Decay-spectroscopy study of the $^{\rm 67m}$Fe isomer has been performed at GANIL. This isomer is found to have an energy of 387 keV and a half-life of 75(21) $\mu$s. An intermediate excited state is introduced at 367 keV. The results are interpreted in terms of various nuclear models, and a deformed shape is inferred for 67Fe.

PACS
25.70.Mn - Projectile and target fragmentation.
21.10.Tg - Lifetimes.
27.50.+e - $59\geq A \geq 89$ .
21.60.Cs - Shell model.

© Società Italiana di Fisica, Springer-Verlag 2003

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