Physical origin of the anomalous behavior of the nuclear rotation frequency (back bending)
Journal Article
·
· Sov. J. Particles Nucl. (Engl. Transl.); (United States)
OSTI ID:7285331
The physical nature of back bending in nuclear rotational spectra is analyzed. It is shown that the phenomenon is due to the quasi-intersection of rotational bands with different moments of inertia. The moment of inertia is studied as a function of the pairing correlation, quadrupole deformation parameters, and the distribution of the nucleons over one-particle states. In the region of nuclei with stable deformation, the upper energy band is a two-quasiparticle excitation which can be interpreted as a broken pair with angular momenta of the particles directed along the axis of rotation. In the region of nuclei that are soft with respect to deformation, the ground-state band can intersect a band of levels with large deformation, this being a possible explanation of back bending. (AIP)
- Research Organization:
- I. V. Kurchatov Institute of Atomic Energy, Moscow
- OSTI ID:
- 7285331
- Journal Information:
- Sov. J. Particles Nucl. (Engl. Transl.); (United States), Journal Name: Sov. J. Particles Nucl. (Engl. Transl.); (United States) Vol. 6:4; ISSN SJPNA
- Country of Publication:
- United States
- Language:
- English
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