First-forbidden continuum- and bound-state {beta}{sup -}-decay rates of bare {sup 205}Hg{sup 80+} and {sup 207}Tl{sup 81+} ions
- Atominstitut der Oesterreichischen Universitaeten, Technische Universitaet Wien, Wiedner Hauptstrasse 8-10, A-1040 Wien (Austria)
- Stefan Meyer Institut fuer subatomare Physik, Oesterreichische Akademie der Wissenschaften, Boltzmanngasse 3, A-1090 Wien (Austria)
- Petersburg Nuclear Physics Institute, RU-188300 Gatchina, Orlova Roscha 1 (Russian Federation)
- State Polytechnic University of St. Petersburg, Polytechnicheskaya 29, RU-195251 (Russian Federation)
We analyze the decay rates {lambda}{sub {beta}{sub c}{sup -}} and {lambda}{sub {beta}{sub b}{sup -}} of the continuum- and bound-state {beta}{sup -}-decays for bare {sup 205}Hg{sup 80+} and {sup 207}Tl{sup 81+} ions. For the ratio of the decay rates R{sub b/c}={lambda}{sub {beta}{sub b}{sup -}}/{lambda}{sub {beta}{sub c}{sup -}} we obtain the values R{sub b/c}=0.161 and R{sub b/c}=0.190 for bare {sup 205}Hg{sup 80+} and {sup 207}Tl{sup 81+} ions, respectively. The theoretical value of the ratio R{sub b/c}=0.190 for the decays of {sup 207}Tl{sup 81+} agrees well with the experimental data R{sub b/c}{sup exp}=0.188(18), obtained at GSI. The theoretical ratio R{sub b/c}=0.161 for {sup 205}Hg{sup 80+} is about 20% smaller than the experimental value R{sub b/c}{sup exp}=0.20(2), measured recently at GSI. We give arguments that the nuclear structure of the nuclei in the {sup 205}Hg{sup 80+}{yields} {sup 205}Tl{sup 81+} transition cannot provide such an enhancement of the ratio. We estimate the values of the continuum- and bound-state {beta}{sup -}-decay rates of the bare {sup 205}Hg{sup 80+} ions.
- OSTI ID:
- 21199409
- Journal Information:
- Physical Review. C, Nuclear Physics, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 6 Vol. 78; ISSN 0556-2813; ISSN PRVCAN
- Country of Publication:
- United States
- Language:
- English
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