The experimental bandhead excitation energies of two-quasi-neutron rotational bands in 100Zr and 102Zr nuclei have been used in the frame of the quantum Monte Carlo(QMC) pairing model to determine the strength G of the neutron pairing interaction. Using this strength, the bandhead excitation energies of two-quasi-neutron rotational bands in 98Sr and 100Sr have been predicted. Effects of the particle number fluctuation, introduced by the Bardeen-Cooper-Schrieffer approximation, and absent in the QMC approach, are discussed. Shapes and ground state properties of nuclei from the neutron-rich zirconium and strontium isotopes are calculated using the macroscopic-microscopic method with the universal Woods-Saxon average potential and a monopole pairing residual interaction to obtain single-particle schemes relevant for pairing calculation. Our calculations are in good agreement with the experimental ground state deformation.

Quantum Monte Carlo Study of Pairing Interaction of the Neutron-Ric A â 100 Nuclei

Ventura, A.
1998-01-15

Abstract

The experimental bandhead excitation energies of two-quasi-neutron rotational bands in 100Zr and 102Zr nuclei have been used in the frame of the quantum Monte Carlo(QMC) pairing model to determine the strength G of the neutron pairing interaction. Using this strength, the bandhead excitation energies of two-quasi-neutron rotational bands in 98Sr and 100Sr have been predicted. Effects of the particle number fluctuation, introduced by the Bardeen-Cooper-Schrieffer approximation, and absent in the QMC approach, are discussed. Shapes and ground state properties of nuclei from the neutron-rich zirconium and strontium isotopes are calculated using the macroscopic-microscopic method with the universal Woods-Saxon average potential and a monopole pairing residual interaction to obtain single-particle schemes relevant for pairing calculation. Our calculations are in good agreement with the experimental ground state deformation.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/20.500.12079/1085
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