Radioactive decay of Os191 and Os191m |
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Authors: | Z. Plajner L. Malý N. Eissa A. Benedek |
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Affiliation: | 1. ústav jaderného vyzkumu ?SAV, ?e?
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Abstract: | Beta and gamma spectra of Os191 were studied using a magnetic double-focusing beta-spectrometer and a scintillation spectrometer. The isomeric state Os191m decays through the 74·4 ± 0·1 keV (E3/M4=50) transition with a half-lifeT 1/2=13·0 ± 0·5 hours. A continuous beta spectrum withE max=147 ± 3 keV and the gamma transitions 41·83 ± 0·05 keV (E3), 82·5 ± 0·3 keV and 129·4 ± 0·1 keV (70%M1 + 30%E2) were observed in the decay of the ground state of Os191. The conversion coefficient of the last transition was determined as 1·94 ±± — 0·10. Gamma transitions with energies of 47 keV and 185·8 keV were not observed. |
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