Abstract

The energy of the first excited 2+ state in Kr96 was measured as 241 keV. The nucleus was produced in the fission of U238 induced by a 954-MeV Xe136 beam and prompt γ rays were observed using the clover array CLARA in coincidence with fission products identified with the PRISMA spectrometer. The evolution of the quadrupole collectivity in the Kr isotopes with N⩾50 is discussed by comparison with that from the Rb to Mo isotones and with predictions of various theoretical calculations.Received 12 June 2009DOI:https://doi.org/10.1103/PhysRevC.80.021301©2009 American Physical Society

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