Lifetime measurements on fission fragments in the A ∼ 100 region
- L. Grente
- M.-D. Salsac
- W. Korten
- A. Görgen
- T. W. Hagen
- T. Braunroth
- B. Bruyneel
- I. Celikovic
- E. Clément
- O. Delaune
- A. Dijon
- A. Drouart
- S. Ertürk
- F. Farget
- G. de France
- A. Gottardo
- M. Hackstein
- B. Jacquot
- J. Libert
- J. Litzinger
- J. Ljungvall
- C. Louchart
- C. Michelagnoli
- D.R. Napoli
- A. Navin
- N. Pillet
- A. Pipidis
- F. Recchia
- M. Rejmund
- W. Rother
- E. Sahin
- C. Schmitt
- S. Siem
- B. Sulignano
- J.J. Valiente-Dobon
- K.O. Zell
DOIAbstract
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
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