Elsevier

Nuclear Physics A

Volume 306, Issues 1–2, 14–21 August 1978, Pages 242-258
Nuclear Physics A

Search for parity mixing in the 93Tc 17−2 isomer: Measurements of partial γ-decay widths

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Abstract

The angular distributions and linear polarizations of γ-rays emitted by the τ = 15 μs172 isomer in 93Tc have been determined. The results imply upper limits of ≦ 6 % for the parity-violating E2 component in the 750.78 keV 17−213+2 transition and of ≦ 0.06 eV for the parity-violating matrix element, |〈17+2|Hp.v|17−2〉|. The 17−217+2 level spacing was determined to be 0.30 ± 0.03 keV and the corresponding E1 branch was found to be ≦ 6 % of the 17−213+2 branch.

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Present address: Nuclear Physics Laboratory, Oxford, England.

††

NRCC Postdoctoral Fellow. Present address: Technische Universität, Munich, W. Germany.

†††

NRCC Postdoctoral Fellow.

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