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HK: Physik der Hadronen und Kerne

HK 10: Poster Session: Nuclear Structure/Spectroscopy

HK 10.8: Poster

Dienstag, 9. März 2004, 13:30–15:30, Foyer

High-spin states in ¹²⁴Ba ^* — •A. Al-Khatib¹, A.K. Singh¹, A. Bürger¹, P. Bringel¹, H. Hübel¹, A. Neußer¹, G.B. Hagemann², B. Herskind², C.R. Hansen², G. Sletten², D. Curien³, A. Maj⁴, A. Lopez-Martens⁵, A. Bracco⁶, P. Fallon⁷, and B.M. Nyakó⁸ — ¹HISKP, Univ. Bonn, Germany — ²NBI, Copenhagen, Denmark — ³IReS, Strasbourg, France — ⁴IFJ, Krakow, Poland — ⁵CSNSM, Orsay, France — ⁶Univ. Milano, Italy — ⁷LBNL, Berkely, USA — ⁸ATOMIKI, Debrecen, Hungary

High-spin states in the nucleus ¹²⁴Ba have been populated in the
⁶⁴Ni(⁶⁴Ni,4n) reaction at beam energies of 255 and 261 MeV. The beam was provided by the Vivitron tandem accelerator at IReS and γ-ray
coincidences were measured with the EUROBALL spectrometer array. Previously known rotational bands in ¹²⁴Ba [1] could be extended to higher spins and three new bands were found, one of them extending into the spin-40 region. The structure of the bands, including band crossings and band termination, is discussed and compared to cranked shell model calculations.

[1] S. Pilotte et al, Nucl. Phys. A514 (1990) 545

^* Work supported by BMBF and EU