München 2006 – wissenschaftliches Programm
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HK: Physik der Hadronen und Kerne
HK 24: Kernphysik/Spektroskopie
HK 24.2: Vortrag
Dienstag, 21. März 2006, 17:30–17:45, C
Evolution of gamma-correlations in well deformed rare earth nuclei — •C. Hinke1, R. Krücken1, R.F. Casten2, V. Werner2, and N.V. Zamfir3 — 1Physik Department E12, TU München — 2Wright Nuclear Structure Laboratory, Yale University, New Haven, USA — 3National Institute of Physics and Nuclear Engineering, Bucharest, Romania
We will show that the evolution of structure of well deformed rare earth nuclei within the symmetry trianlge of the interactin boson model (IBM) is related to the quasi-particle structure of the gamma-vibrational state in the Nilsson-model. Simplified RPA calculations for the deformed rare earth nuclei have been performed in order to determine the quasi-particle contributions to the $2^+$ gamma-vibrational state. It is found that the distribution of quasi-particle contributions to the wave functions seems to be related to the parameter Chi in the interaction boson approximation. On the basis of our comparison the different trajectories within the IBA symmetry triangle obtained for various isotopic chains of rare earth nuclei[1] can be quite naturally related to the underlying quasi-particle correlations.
[1] E.A. McCutchan, N.V. Zamfir, and R.F. Casten, Phys. Rev. C69, 064306 (2004).