Quadrupole pairing interaction and signature inversion

1999/12/02 by F. R. Xu, F.R Xu, W. Satula +3 · 4 citations
Physics and Astronomy · #Nuclear physics research studies #Physics of Superconductivity and Magnetism #Rare-earth and actinide compounds #nucl-th

paper · pdf · doi:10.1016/s0375-9474(99)00817-9

published as Nucl.Phys. A669 (2000) 119-134 · 17 pages, 14 figures, Nuclear Physics A in print

arxiv created 1999/12/02 · openalex publication_date 2000/04/01 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

The signature inversion in the πh11/2 ⊗ νh11/2 rotational bands of odd-odd Cs and La isotopes and the πh11/2 ⊗ νi13/2 bands of odd-odd Tb, Ho and Tm nuclei is investigated using pairing and deformation self consistent mean field calculations. The model can rather satisfactorily account for the anomalous signature splitting, provided that spin assignments in som of the bands are revised. Our calculations show that signature inversioncan appear already at axially symmetric shapes. It is found that this is due to the contribution of the λμ=22 component of the quadrupole pairing interaction to the mean field potential.

Citations

• Roles of triaxiality and residual interaction in signature inversions of A ∼ 130 odd-odd nuclei

Cited by

• Identification of the Lowest T=2, Jπ=0+ Isobaric Analog State in Co<mml:mprescripts/><mml:none/>52 and Its Impact on the Understanding of β-Decay Properties of Ni<mml:mprescripts/><mml:none/>52
• Neutron-rich calcium isotopes within realistic Gamow shell model calculations with continuum coupling
• Spin-dependent γ softness or triaxiality in even-even 132–138 Nd nuclei
• SIGNATURE SPLITTING IN 173W WITH TRIAXIAL PARTICLE ROTOR MODEL