Photons corresponding to 3040.6-keV E6 and 1712.6-keV M5 transitions have been observed from the decay of 2.6-min Fe 53m . They have intensities of 2 xlO" 4 and 7 xlO" 3 , respectively, compared with the 701.1-keV E4 isomeric transition that is primarily responsible for depopulating Fe 53m . These correspond to retardations of 650 and 43 over simple single-particle estimates.
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