Cumulative Fission Yield and Half-Life ofSb134
1968; American Institute of Physics; Volume: 173; Issue: 4 Linguagem: Inglês
10.1103/physrev.173.1159
ISSN1536-6065
AutoresA. A. Delucchi, A. E. Greendale, Peter O. Strom,
Tópico(s)Nuclear reactor physics and engineering
ResumoThe cumulative fission yield of $^{134}\mathrm{Sb}$ produced in thermal-neutron-induced fission of $^{235}\mathrm{U}$ has been experimentally determined, and the half-life of the nuclide has been measured. The cumulative fission yield and half-life are found to be (0.32\ifmmode\pm\else\textpm\fi{}0.04)% and 11.1\ifmmode\pm\else\textpm\fi{}0.8 sec, respectively. It is shown that the fission yields presently measured in the mass-134 chain do not fit a Gaussian isobaric yield curve and that this could be accounted for by isomerism in $^{134}\mathrm{Sb}$. A nuclear level scheme for $^{134}\mathrm{Sb}$ which predicts two isomeric states for this nuclide is presented. From the experimental data, an upper limit of approximately 2 sec is determined for the half-life of the proposed isomer.
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