Decay of the134Cs isomers and the levels of134Xe,134Cs,and134Ba |
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Authors: | J R Van Hise D C Camp R A Meyer |
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Institution: | 1. Department of Chemistry, Pacific Union College, Angwin, California, USA 2. Lawrence Livermore Laboratory, University of California Livermore, California, USA
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Abstract: | A precision study of the decay of134Cs g and134Cs m has been made, using ordinary Ge(Li) spectrometers and ā Compton-suppression spectrometer. The logft value of the second forbidden nonuniqueβ-decay to134Xe has been measured to be 13.0±0.2. TheM4γ-ray transition in134Csm(8?) decay has been measured to haveα K= 73±7 and a hindrance of 7.0 over the Moskowski estimate. This is discussed in terms of the level configurations and the analogous transition in133Xe. A new intensity limit of 2×10?6 has been set for the zero-phonon transition between the 4+ and 2+ members of the two-phonon triplet. This leads to an upper limit forB(E2)4→2′, greater than 905. This and the more preciseγ-ray intensity values are discussed in relation to presently available nuclear models. |
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