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Title: 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 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.
Authors:
 [1] ;  [1] ;  [2] ;  [3] ;  [2] ; ; ;  [1] ;  [4]
  1. Physics Division, Oak Ridge National Laboratory, Oak Ridge Tennessee 37830 (United States)
  2. Dept. of Physics and Astronomy, University of Tennessee, Knoxville, TN 37996 (United States)
  3. (United States)
  4. Dept. of Physics and Astronomy, Louisiana State University, Baton Rouge, LA 70803 (United States)
Publication Date:
OSTI Identifier:
22436684
Resource Type:
Journal Article
Resource Relation:
Journal Name: Nuclear Data Sheets; Journal Volume: 120; Other Information: Copyright (c) 2014 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; EXCITED STATES; HALF-LIFE; ISOMERIC NUCLEI; KEV RANGE 100-1000; KRYPTON 93; NUCLEAR DECAY; ORNL; PROTONS; RADIOACTIVE ION BEAMS; RUBIDIUM 93; URANIUM 238