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HK: Fachverband Hadronen und Kerne

HK 67: Poster Session

HK 67.44: Poster

Donnerstag, 19. März 2009, 14:00–16:00, Audi-Max

Octupole vibrations in rare-earth nuclei — •Marc André Büssing, Michael Elvers, Janis Endres, Jens Hasper, and Andreas Zilges — Institut für Kernphysik, Universität zu Köln, D-50823 Köln

The systematics of octupole vibrations in the region of rare-earth nuclei are still not well understood.

First test measurements have been carried out at the FN Tandem accelerator of the University of Cologne. The gamma-ray spectroscopy was performed at the highly-efficient HORUS spectrometer which consists of 16 High-Purity Germanium detectors. The nucleus ¹⁵⁸Dy has been investigated via the reactions ¹⁵⁶Gd(α,2n) and ¹⁴⁹Sm(¹²C,3n), furthermore the nucleus ¹⁵⁴Dy was studied via the reaction ¹⁴⁴Nd(¹⁴N,4n). In addition measurements with the (p,p^′) reaction were carried out on the nuclei ¹⁴²Nd and ¹⁷²Yb.

First results of these measurements are shown in the context of existing data for this mass region.