G FACTOR MEASUREMENTS IN NEUTRON-RICH 252CF FISSION FRAGMENTS, MEASURED USING THE GAMMASPHERE ARRAY
This work was supported by the UK Engineering and Physical Science Council, the U.S. Department of Energy, Office of Nuclear Physics, under Contract No. W-31-109-ENG-38.
Several g factors of excited states of moderately neutron-rich 252Cf fission fragments were measured using the IPAC method from data gathered with the GAMMASPHERE array. These results shine new light onto two regions of the nuclear chart very sensitive to the number of valence nucleons. The results for 101Zr and 103,105Mo focus on the single particle properties of nuclei in a region characterised by rapid shape changes and the emergence of triaxiality, and were found consistent with a particle–rotor picture. The g factors of 138,140,142Xe constitute an excellent test of single–particle properties near the N=82 shell closure. The measured g factors are in excellent agreement with recent shell-model and QRPA calculations.
