The energy of the first excited 2+ state in 96Kr was measured as 241 keV. The nucleus was produced in the fission of 238U induced by a 954-MeV 136Xe 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.
Evolution of deformation in the neutron-rich krypton isotopes: The Kr-96 nucleus
LENZI, SILVIA MONICA;MENGONI, DANIELE;MONTAGNOLI, GIOVANNA;RECCHIA, FRANCESCO;SCARLASSARA, FERNANDO;
2009
Abstract
The energy of the first excited 2+ state in 96Kr was measured as 241 keV. The nucleus was produced in the fission of 238U induced by a 954-MeV 136Xe 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.
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