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XLI Zjazd Fizyków Polskich, Lublin 2011
Theoretical predictions of the exotic nuclear shapes
Katarzyna Mazurek1∗, Adam Maj1, Jerzy Dudek2
1
Nuclear Structure Division (NZ22), Institute of Nuclear Physics PAN,
Radzikowskiego 152, 31-342 Kraków
2
Institut Pluridisciplinaire Hubert Curien, Departement de Recherches Subatomique i Universite
de Strasbourg, 23 rue du Loess, F-67037 Strasbourg, France
The total energy of the nucleus is calculated or by microscopic or by
microscopic- macroscopic approaches. The minimum of total energy allows to
estimate the optimal nuclear deformation. The group theory in the description of
nuclear shape allows to investigate the tetrahedral and octahedral [1]. Fast
rotating nuclei prefer to posses the axial-symmetric shapes. However it is
predicted with increasing the spin of nucleus, that its deformation can change
from oblate to prolate by tree-axial shapes (Fig. 1)- Jacobi transition and massasymmetric shapes - Poincare transition [2].
The presentation concerns the results of theoretical calculations of the
potential energy of rotating nuclei with Lublin - Strasbourg Drop (LSD) model
[3] in multidimensional deformation parameters space and the application into
the Thermal Shape Fluctuation method. The examples of the Jacobi and
Poincare transition will be shown for neutron-efficient nuclei (i.e. 142Ba) and
possible experimental verification of the obtained results in comparison to the
strength function of the Giant Dipole Resonance (GDR) [4] will be discussed.
Figure 1. The shape variation of the rotating nucleus 142Ba
References
[1] K. Mazurek, J. Dudek, N. Dubray, N. Schunck, Int. J. of Mod. Phys. E 15 (2006) 542
[2] A. Maj, K. Mazurek, J. Dudek, M. Kmiecik, D. Rouvel, Int. J. Mod. Phys. E 19 (2010) 532
[3] K. Pomorski and J. Dudek, Phys. Rev. C67 (2003) 044316
[4] A. Maj, M. Kmiecik, A. Bracco, F. Camera, P. Bednarczyk, et al. Nucl. Phys. A (2004) 319
∗
E-mail: [email protected]
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