Enhanced Quadrupole Collectivity atN=40: The Case of Neutron-Rich Fe Isotopes

2010/06/28 by W. Rother, A. Dewald, Α. Dewald +27 · 115 citations
Physics and Astronomy · #Atomic and Molecular Physics #Atomic physics #Coulomb excitation #Excited state #Neutron #Nuclear Physics and Applications #Nuclear physics #Nuclear physics research studies #Physics #Quadrupole #Quantum mechanics #Valence (chemistry) #nucl-ex #nucl-th

paper · pdf · doi:10.1103/physrevlett.106.022502

published in Physical Review Letters 106(2), 022502 (American Physical Society) · 4 pages, 2 figures

arxiv created 2010/06/28 · openalex publication_date 2011/01/14 · arxiv updated 2011/02/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

The transition rates for the 2(1)+ states in (62,64,66)Fe were studied using the recoil distance Doppler-shift technique applied to projectile Coulomb excitation reactions. The deduced E2 strengths illustrate the enhanced collectivity of the neutron-rich Fe isotopes up to N = 40. The results are interpreted using the generalized concept of valence proton symmetry which describes the evolution of nuclear structure around N = 40 as governed by the number of valence protons with respect to Z ≈ 30. The trend of collectivity suggested by the experimental data is described by state-of-the-art shell-model calculations with a new effective interaction developed for the fpgd valence space.

Citations

• Shape and Structure ofN=ZGe<mml:mprescripts/><mml:none/>64: Electromagnetic Transition Rates from the Application of the Recoil Distance Method to a Knockout Reaction
• Novel Features of Nuclear Forces and Shell Evolution in Exotic Nuclei

Cited by

• β− decay study of the Mn<mml:mprescripts/><mml:none/>66−Fe<mml:mprescripts/><mml:none/>66−Co<mml:mprescripts/><mml:none/>66−Ni<mml:mprescripts/><mml:none/>66 decay chain
• The neutron-rich edge of the nuclear landscape: Experiment and theory.
• Neutron-rich calcium isotopes within realistic Gamow shell model calculations with continuum coupling