No Evidence of Isomerism for the First Excited State of {sup 93}Rb

The 253.3–keV excited state located in {sup 93}Rb was studied at the Holifield Radioactive Ion Beam Facility in Oak Ridge. This state, described as isomeric in databases, was populated in the decay of {sup 93}Kr produced by proton–induced fission of {sup 238}U and isolated using the isotope separati...

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Bibliographic Details
Published in:Nuclear data sheets 2014-06, Vol.120
Main Authors: Miernik, K., Gross, C.J., Grzywacz, R., Physics Division, Oak Ridge National Laboratory, Oak Ridge Tennessee 37830, Madurga, M., Mendez, A.J., Rykaczewski, K.P., Stracener, D.W., Zganjar, E.F.
Format: Article
Language:English
Subjects:
EXCITED STATES
HALF-LIFE
ISOMERIC NUCLEI
KEV RANGE 100-1000
KRYPTON 93
NUCLEAR DECAY
NUCLEAR PHYSICS AND RADIATION PHYSICS
ORNL
PROTONS
RADIOACTIVE ION BEAMS
RUBIDIUM 93
URANIUM 238
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Summary:The 253.3–keV excited state located in {sup 93}Rb was studied at the Holifield Radioactive Ion Beam Facility in Oak Ridge. This state, described as isomeric in databases, was populated in the decay of {sup 93}Kr produced by proton–induced fission of {sup 238}U and isolated using the isotope separation on–line technique. We report that the 253.3–keV level does not reveal isomerism and the upper limit of the half-life from our measurement is 4 ns. Our findings are supported by previously reported results that were not taken into account in the latest nuclear databases.
ISSN:0090-3752
1095-9904
DOI:10.1016/J.NDS.2014.07.005