M. Faber, A. N. Ivanov, P. Kienle, E.L. Kryshen, M. Pitschmann, N. Troitskaya:

"First-Forbidden Continuum- and Bound-State β";^{+}-Decay Rates of Bare^{205}Hg^{80+}and^{270}Tl^{81+}Ions

Physical Review C,78(2008), 061603(R); 061603-1 - 061603-4.

We calculate the decay rates λ_{β}-c and λ_{β}-b of the continuum- and bound-state β^{-}-decays for bare^{205}Hg^{80+}and^{207}Tl^{81+}ions. For the ratio of the decay rates R_{b/c}= λ_{β}-b/λ_{β}-c we obtain the values R_{b/c}= 0,161 and R_{b/c}= 0,190 for bare^{205}Hg^{80+}and^{207}Tl^{81+}ions, respectively. The theoretical valure of the ratio R_{b/c}= 0,190 for the decays of^{207}Tl^{81+}agrees withing 1% of accuracy with the experimental data R_{b/c}= 0,188(18), obtained at GSI. The theoretical ratio R_{b/c}= 0,1641 for^{205}Hg^{80+}is about 20% smaller than the experimental value R_{b/c}= 0,20(2), measured recently at GSI.

http://publik.tuwien.ac.at/files/PubDat_171608.pdf

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