Mainz 2012 – wissenschaftliches Programm
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HK: Fachverband Physik der Hadronen und Kerne
HK 13: Struktur und Dynamik von Kernen
HK 13.1: Gruppenbericht
Montag, 19. März 2012, 16:30–17:00, P 4
Experimental Studies of Pygmy and Giant Resonances in Exotic Nuclei - Status and Perspectives — •Dominic Rossi1, Thomas Aumann2, Konstanze Boretzky1, Roman Gernhäuser3, Jens Volker Kratz4, Reiner Krücken3, Christoph Langer5, Tudi Le Bleis3, Olga Lepyoshkina3, Ralf Plag1, and Rene Reifarth5 — 1GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt — 2Technische Universität Darmstadt — 3Technische Universität München — 4Johannes Gutenberg-Universität, Mainz — 5Goethe-Universität, Frankfurt am Main
Coulomb excitation is a powerful tool to investigate the collective response of exotic nuclei, providing a unique insight into the dynamical properties of nuclei located far from stability. Using this technique, their dipole strength can be measured, providing valuable information not only for the nuclear equation-of-state through the observation of the Pygmy Dipole Resonance (PDR), but also for nucleosynthesis scenarios, such as the rp-process.
Several experiments have been carried out in the past years using the R3B-LAND setup at GSI in Darmstadt, in which the Coulomb excitation of unstable nuclei has been investigated in a kinematicaly complete manner. Selected results of these campaigns will be presented, with a main focus on the PDR mode. The experimental goals of future experiments at the R3B setup will be discussed as well, revealing a strategy to not only gain a deeper understanding of the PDR, but also to disentangle the dipole and quadrupole contributions in exotic nuclei.