Structure and symmetries of odd-odd triaxial nuclei

. Rotational spectra of odd-odd Rh and Ag isotopes are investigated with the primary motivation to search for the spontaneous chiral symmetry breaking phenomenon in these nuclei. The experimental results obtained on the degenerate dipole bands of some of these isotopes using a large array of gamma d...

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Bibliographic Details
Published in:The European physical journal. A, Hadrons and nuclei Hadrons and nuclei, 2017-05, Vol.53 (5), p.1-14, Article 90
Main Authors: Palit, R., Bhat, G. H., Sheikh, J. A.
Format: Article
Language:English
Subjects:
Banded structure
Broken symmetry
Chirality
Deformation
Detectors
Electromagnetic properties
Exotic phenomena at the interface of nuclear and particle physics
Hadrons
Heavy Ions
Isotopes
Mathematical analysis
Nuclear Fusion
Nuclear Physics
Nuclei (nuclear physics)
Particle and Nuclear Physics
Physics
Physics and Astronomy
Review
Rotational spectra
Staggering
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Summary:. Rotational spectra of odd-odd Rh and Ag isotopes are investigated with the primary motivation to search for the spontaneous chiral symmetry breaking phenomenon in these nuclei. The experimental results obtained on the degenerate dipole bands of some of these isotopes using a large array of gamma detectors are discussed and studied using the triaxial projected shell (TPSM) approach. It is shown that, first of all, to reproduce the odd-even staggering of the known yrast bands of these nuclei, large triaxial deformation is needed. This large triaxial deformation also gives rise to doublet band structures in many of these studied nuclei. The observed doublet bands in these isotopes are shown to be reproduced reasonably well by the TPSM calculations. Further, the TPSM calculations for neutron-rich nuclei indicate that the ideal manifestation of the chirality can be realised in 106 Rh and 112 Ag , where the doublet bands have similar electromagnetic properties along with small differences in excitation energies.
ISSN:1434-6001
1434-601X
DOI:10.1140/epja/i2017-12272-y