Lifetime Measurments of Excited States in Neutron-Rich Fission Fragments
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Authors
Hagen, T. W.Grente, Lucie
Gorgen, Andreas

Salsac, Marie Delphine
Korten, Wolfram

Farget, Fanny
Braunroth, Thomas
Bruyneel, Bart
Čeliković, Igor T.

Clement, Emmanuel
de France, Gilles
Delaune, Olivier

Dewald, Alfred
Dijon, A.
Hackstein, Matthias
Jacquot, Bertrand
Litzinger, J.
Ljungvall, Joa
Louchart, C.
Michelagnoli, Caterina
Napoli, Daniel R.

Navin, A.
Recchia, Francesco

Rejmund, M.
Rother, Wolfram
Sahin, E.

Siem, Sunniva
Sulignano, Barbara
Theisen, Christophe

Valiente-Dobon, Jose Javier
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Lifetimes of short-lived excited states in a wide range of neutron-rich fission fragments were measured using the recoil distance Doppler shift (RDDS) technique, which was applied to fusion-fission reactions in inverse kinematics for the first time. The fission fragments were identified event-by-event in mass, charge, and atomic number using the VAMOS magnetic spectrometer at GANIL. Gamma rays originating from the fission fragments were measured with the EXOGAM array of Ge Clover detectors around the target position. Using a degrader, the change in the Doppler shift of the gamma ray allows the application of the RDDS method. Details of the experimental technique will be discussed and the status for the ongoing analysis for odd-mass yttrium isotopes will be presented.
Source:
Acta Physica Polonica. Series B: Elementary Particle Physics, Nuclear Physics, Statistical Physics, Theory of Relativity, Field Theory, 2016, 47, 3, 903-910
DOI: 10.5506/APhysPolB.47.903
ISSN: 0587-4254 (print); 1509-5770 (electronic)