16 research outputs found
The neutron and proton two-particle nucleus \chem{^{134}Sb}: New low-spin states observed in the decay of \chem{^{134}Sn} and an estimate of the energy of the \mth{7^-} isomer
Excited states in the \chem{^{134}Sb} nucleus, populated
in the -decay of \chem{^{134}Sn}, have been studied at
the mass separator OSIRIS. The \chem{^{134}Sn} activity was
produced via fast neutron-induced fission of \chem{^{238}U}
target. A main result was the discovery of a very low-lying first-excited state of \chem{^{134}Sb}, at 13 keV, which has led to
a strong revision of the level scheme. The new results are
compared with different theoretical calculations and with the
known data for the analogous neutron and proton two-particle
nucleus in the \chem{^{208}Pb} region. On the basis of this
comparison, the energy of the () isomer is estimated to be about 250 keV,
some 100 keV lower than previously reported
A new μs isomer in produced in the projectile fission of
The neutron-rich isotope 136Sb has been produced following the relativistic projectile fission of 238U in an experiment performed at the Fragment Separator at GSI, Darmstadt. Delayed γ-ray spectroscopy of the fission products has been performed after isotope separation. A new isomeric state in 136Sb has been populated, and its lifetime measured as T1/2 = 565(50) ns. Realistic and empirical shell-model calculations have been performed and are compared to the experimental observables
A new μs isomer in <sup>136</sup>Sb produced in the projectile fission of <sup>238</sup>U
The neutron-rich isotope 136Sb has been produced following the relativistic projectile fission of 238U in an experiment performed at the Fragment Separator at GSI, Darmstadt. Delayed γ-ray spectroscopy of the fission products has been performed after isotope separation. A new isomeric state in 136Sb has been populated, and its lifetime measured as T1/2 = 565(50) ns. Realistic and empirical shell-model calculations have been performed and are compared to the experimental observables
A New us Isomer in 136Sb Produced in the Projectile Fission of 238U
The neutron-rich isotope Sb-136 has been produced following the relativistic projectile fission of U-238 in an experiment performed at the Fragment Separator at GSI, Darmstadt. Delayed gamma -ray spectroscopy of the fission products has been performed after isotope separation. A new isomeric state in Sb-136 has been populated, and its lifetime measured as T-1/2 = 565(50) ns. Realistic and empirical shell-model calculations have been performed and are compared to the experimental observables