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Bochum 2009 – scientific programme

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HK: Fachverband Hadronen und Kerne

HK 82: Nuclear Structure and Dynamics I

HK 82.2: Talk

Friday, March 20, 2009, 11:30–11:45, H-ZO 40

Decay of isoscalar giant resonances* — •Felix Siebenhühner1, P. Butler2, P. Dendooven3, J. Endres4, M.N. Harakeh3, S. Harissopulos5, J. Hasper4, R.-D. Herzberg2, R. Krücken6, A. Lagoyannis5, N. Pietralla1, L. Popescu7, D. Savran1, M. Scheck2, K. Sonnabend1, V. Stoica3, H.J. Wörtche3, and A. Zilges41Institut für Kernphysik, TU Darmstadt — 2Department of Physics, University of Liverpool, UK — 3Kernfysisch Versneller Instituut, Rijksuniversiteit Groningen, Netherlands — 4Institut für Kernphysik, Universität zu Köln, Germany — 5I.N.P. NCSR Demokritos, Athens, Greece — 6Physik-Department E12, TU München, Germany — 7SCK-CEN, Mol, Belgium

At the KVI in Groningen, NL, several α−γ coincidence experiments [1] were performed. In these experiments the decay of the excited nucleus can be studied in great detail, using HPGe detectors for high resolution gamma spectroscopy. At excitation energies above the neutron separation threshold in the region of isoscalar giant resonances the degree of population of excited states in the daughter nucleus after particle emission can be studied as a function of the excitation energy. Preliminary results from the analysis of the experiments on 124Sn and 140Ce are presented and discussed. A strong dependance of the population of excited states on the excitation energy is observed.

*Supported by DFG under contract SFB 634 and by the EU under EURONS Contract no. RII3-CT-2005-506065

[1] D.Savran et al.: Nucl. Instr. Meth. Phys. Res. A564(2006) 267

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