Abstract
The level scheme of97Tc has been investigated by observing theγ-rays following the decay of 2.9-d97Ru.γ-singles andγγ-coincidence measurements were carried out with Ge(Li)-detectors. The time difference of coincident γ-rays was measured as a third parameter. From the coincidence events, the intensities ofγγ-cascades were extracted. The97Ru decay gives rise to 18γ-lines which could be fitted into a level scheme of97Tc consisting of 9 levels. Spin and parity assignments of the levels were made from log(ft) values andγ-ray branching ratios. Discrepancies concerning the energy of the first 3/2− state and the existence of a 946 keV level are discussed.
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We wish to thank Prof. Dr. H. v. Buttlar for valuable discussions. We are indebted to the personnel of the reactor DIDO of the Kernforschungsanstalt Jülich for irradiation of the samples. Dr. K. Farzine is gratefully acknowledged for providing us with a selfmade planar Ge(Li) detector.
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Huber, B.W., Krämer, K. Levels of97Tc from the decay of97Ru. Z. Physik 267, 111–116 (1974). https://doi.org/10.1007/BF01668637
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DOI: https://doi.org/10.1007/BF01668637