Combined decay and laser spectroscopy measurements of the isotope Fr214 are reported, using the collinear resonance ionization spectroscopy (CRIS) technique at the ISOLDE facility at CERN. For the Iπ=(1-) spin assignment, the g-factor value of g(Fr214)=+0.241(16) corresponds to a relatively pure (π1h9/2 - ν2g9/2) ground-state configuration. An alternative interpretation with g(Fr214)=+0.144(10), for a (2-) spin assignment suggests a greater contribution of configuration mixing with the ν1i11/2 orbital. As the N=126 shell closure is passed, a kink is observed at the δ(r2)213,214 value, which is analogous to the behavior observed in the neighboring isotopic chains.
ASJC Scopus subject areas
- Nuclear and High Energy Physics