Abstract
The internal conversion spectrum of Hf172 was examined with an intermediate image magnetic spectrometer. The gamma-ray spectrum and gamma-gamma coincidence spectrum were studied by means of scintillation spectrometers. The half-life of the 65·9 keV excited level in Lu172 was found to beT 1/2 = (3·32±0·20) × 10−7 sec. The proposed decay scheme is discussed.
On the same apparatus the half-life of the 206·25 keV excited level in Re187 was measured and the result isT 1/2 = (5·05±0·13) × 10−7 sec.
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The authors wish to thank to Ing. Vobecký and Ing. Maštalka for the separation of Hf and Z. Pražáková for assistance in the numerical calculation.
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Brabec, V., Jursík, J. Decay of Hf172 . Czech J Phys 15, 317–324 (1965). https://doi.org/10.1007/BF01689266
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DOI: https://doi.org/10.1007/BF01689266