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Darmstadt 2008 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 48: Kernphysik / Spektroskopie I

HK 48.6: Talk

Friday, March 14, 2008, 15:30–15:45, 2E

Plunger lifetime measurements after Coulomb excitation at intermediate beam energies — •Matthias Hackstein1, Alfred Dewald1, Pavel Petkov1,3, Christoph Fransen1, Gabriela Ilie1, Jan Jolie1, Barbara Melon1, Thomas Pissulla1, Wolfram Rother1, Karl-Oskar Zell1, Aaron Chester2, Przemyslaw Adrich2, Daniel Bazin2, Matt Bowen2, Alexandra Gade2, Thomas Glasmacher2, Dave Miller2, Victoria Moeller2, Krzysztof Starosta2, Andreas Stolz2, Constantin Vaman2, Philip Voss2, Dirk Weissharr2, and Oliver Möller41University of Cologne, Germany — 2Michigan State University/NSCL — 3INRNE, Bulgaria — 4TU Darmstadt, Germany

Two recoil-distance-Doppler-shift (RDDS) experiments were performed at the NSCL/MSU using Coulomb excitations of the projectile nuclei 110Pd, 114Pd at beam energies of 54 MeV/u in order to investigate the evolution of deformation of neutron rich paladium isotopes. The experimental set-up consisted of a dedicated plunger device, developed at the University of Cologne, the SEGA Ge-array and the S800 spectrometer. Lifetimes of the 21+-states in 110Pd and 114Pd were derived from the analysis of the γ-line-shapes as well as from the measured decay-curves. Special features of the data analysis, e.g. features originating from the very high recoil velocities, will be discussed. Supported by DFG: contract number DE 1516/1-1

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