EFFECT OF PAIRING CORRELATIONS ON NUCLEAR PROPERTIES
A method analogous to that developed in the new theory of superconductivity is applied to nuclei in order to investigate the influence of the coherent pairing interaction on various nuclear properties, especially on colleetive motion. The finite size effects, in particular the shell structure of the single-particle levels, are considered. The pairing correlation between two nucleons in states of opposite angular momentum projections is taken into account by means of a canonical transformation from the original interacting nucleons to new independent quasi-particles. For strongly deformed nuclei, the moment of inertia is rather sensitive to the effect of pairing correlations and is found to be reduced from the value for rigid rotation by a factor of the order of that observed. For nuclei in regions near closed shells, the pairing correlations give rise to a spherical equilibrium shape and low energy vibrational modes of excitations. Thc vibrational frequencies and inertial parameters obtained from the present model are in qualitative agreement with experimental data and fit the observed trends. (auth)
- Research Organization:
- Originating Research Org. not identified
- NSA Number:
- NSA-13-013903
- OSTI ID:
- 4262925
- Journal Information:
- Kgl. Danske Videnskab. Selskab. Mat.-Fys. Medd., Journal Name: Kgl. Danske Videnskab. Selskab. Mat.-Fys. Medd. Vol. Vol: 31, No. 11
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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