Lifetime measurements on fission fragments in the A similar to 100 region

Grente, Lucie; Salsac, Marie Delphine; Korten, Wolfram; Goergen, A.; Hagen, T. W.; Braunroth, Thomas; Bruyneel, Bart; Čeliković, Igor T.; Clement, Emmanuel; Delaune, Olivier; Dijon, A.; Drouart, A.; Ertuerk, S.; Farget, Fanny; de France, Gilles; Gottardo, Andrea; Hackstein, Matthias; Jacquot, Bertrand; Libert, J.; Litzinger, J.; Ljungvall, Joa; Louchart, C.; Michelagnoli, Caterina; Napoli, Daniel R.; Navin, A.; Pillet, Nathalie; Pipidis, A.; Recchia, Francesco; Rejmund, M.; Rother, Wolfram; Sahin, E.; Schmitt, C.; Siem, Sunniva; Sulignano, Barbara; Valiente-Dobon, Jose Javier; Zell, K. O.

doi:10.1051/epjconf/20136201002

Abstract

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 gamma -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.

Source:
EPJ Web of Conferences, 2013, 62