Rapid structural change in low-lying states of neutron-rich Sr and Zr isotopes
作者： H Mei , J Xiang , JM Yao , ZP Li , J Meng
DOI: 10.1103/PHYSREVC.85.034321
关键词: Excitation 、 Hamiltonian (quantum mechanics) 、 Isotope 、 Neutron 、 Atomic physics 、 Pairing 、 Physics 、 Quadrupole 、 Structural change 、 Magnetic monopole
摘要: The rapid structural change in low-lying collective excitation states of neutron-rich Sr and Zr isotopes is studied by solving a five-dimensional Hamiltonian with parameters determined from both relativistic mean-field nonrelativistic Skyrme-Hartree-Fock calculations using the PC-PK1 SLy4 forces, respectively. Pair correlations are treated BCS method either separable pairing force or density-dependent zero-range force. isotope shifts, energies, electric monopole quadrupole transition strengths calculated compared corresponding experimental data. results forces exhibit picture spherical-oblate-prolate shape isotopes. However, data, (or SLy4) predicts more moderate dramatic) most properties around $N=60$. underlying microscopic mechanism responsible for discussed.
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