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.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
