Darmstadt 2008 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 22: Kernphysik / Spektroskopie

HK 22.5: Vortrag

Dienstag, 11. März 2008, 09:30–09:45, 2G

High resolution study of 0⁺ and 2⁺ excitations in ¹⁶⁸Er and ¹³⁰Ba with the (p,t) reaction — •Hans-Friedrich Wirth¹, Dorel Bucurescu², Gabriel Suliman², Ralf Hertenberger³, Gerhard Graw³, Thomas Faestermann¹, Reiner Krücken¹, Mahmoud Mahgoub¹, Jan Jolie⁴, Peter von Brentano⁴, Norbert Braun⁴, Stefan Heinze⁴, Oliver Möller⁴, Dennis Mücher⁴, Clemens Scholl⁴, Richard Casten⁵, Deseree Meyer⁵, Nicola Lo Iudice⁶, and Nicolas Chauvin⁷ — ¹Physik-Department, Technische Universität München, Garching, Germany — ²Horia Hulubei National Institute of Physics and Nuclear Engineering, Bucharest, Romania — ³Department für Physik, Ludwig-Maximilians-Universität München, Garching, Germany — ⁴Institut für Kernphysik, Universität zu Köln, Germany — ⁵Wright Nuclear Structure Laboratory, Yale University, New Haven, USA — ⁶Dipartimento di Scienze Fisiche, Universita di Napoli, Italy — ⁷CSNSM, Institut de Physique Nucleaire, Orsay, France

Excited states in the deformed nucleus ¹⁶⁸Er have been studied with high energy resolution, in the (p,t) reaction, with the Munich Q3D spectrograph. A number of 25 excited 0⁺ states and 63 2⁺ states have been assigned up to 4.0 MeV excitation energy. This unusually rich information offers a unique opportunity to check in detail nuclear structure models. The experimental data are compared with the quasiparticle phonon model (QPM) and the projected shell model (PSM).

Latest results for ¹³⁰Ba from a (p,t) measurement will also be discussed. Supported by DFG, MLL, and Cluster of Excellence Exc153.