Lifetime measurements on fission fragments in the A ∼ 100 region
1 CEA Saclay, IRFU/Service de Physique Nucléaire, 91191 Gif-sur-Yvette, France
2 Department of Physics, University of Oslo, 0316 Oslo, Norway
3 Institut für Kernphysik, Universität zu Köln, 50937 Köln, Germany
4 Grand Accélérateur National d'Ions Lourds (GANIL), CEA/DSM-CNRS/IN2P3, Boulevard H. Becquerel, 14706 Caen, France
5 Institute of Nuclear Sciences “VINCA”, University of Belgrade, 11000 Belgrade, Serbia
6 Nigde University, Science Faculty, Nigde, Turkey
7 INFN, Laboratori Nazionali di Legnaro, Legnaro, Italy
8 CEA, DAM, DIF, 91297 Arpajon, France
9 CSNSM, CNRS/IN2P3 and Université Paris Sud, 91405 Orsay, France
a e-mail: firstname.lastname@example.org
Published online: 13 December 2013
Lifetimes of first 4+ and 6+ states have been measured in neutron-rich isotopes of Zr, Mo, Ru and Pd using the recoil distance Doppler shift method at GANIL. The nuclei were produced through a fusion-fission reaction in inverse kinematics. The fission fragments were fully identified in the large-acceptance VAMOS spectrometer and γ-rays were detected in coincidence with the EXOGAM germanium array. Lifetimes of excited states in the range of 1–100 ps were measured with the Cologne plunger. Preliminary lifetime results are presented as well as a discussion on the evolution of the collectivity in this region.
© Owned by the authors, published by EDP Sciences, 2013
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