Ingalls, P. D. and Overley, J. C. and Wilson, H. S. (1977) Isospin-symmetry-hindered branch of ^(42)Sc β-decay. Nuclear Physics A, 293 (1-2). pp. 117-124. ISSN 0375-9474. doi:10.1016/0375-9474(77)90480-8. https://resolver.caltech.edu/CaltechAUTHORS:20170816-110615079
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Abstract
The branching fraction for the isospin-symmetry-hindered positron decay of ^(42)Sc to ^(42)Ca (1.837 MeV) was measured to be (6.3 ± 2.6) × 10^(−5) by observation of delayed γ-rays. This branch alone corresponds to a reduction of the superallowed ground-state Fermi strength by (0.043 ± 0.018)%. The ^(42)Sc sources were produced by the ^(42)Ca(p, n)^(42)Sc reaction at 7.7 MeV. The measured branching agrees with Coulomb-mixing calculations by Rappleyea and Kunz and by Towner, but is smaller than other calculations. This result is of interest in connection with the intercomparison of the super-allowed 0+ → 0+ pure Fermi decays, which determine the effective vector coupling constant of nuclear β-decay.
| Item Type: | Article | |||||||||
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| Additional Information: | © 1977 Elsevier B.V. Supported in part by the National Science Foundation [PHY76-83685]. | |||||||||
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| Subject Keywords: | Radioactivity | |||||||||
| Issue or Number: | 1-2 | |||||||||
| DOI: | 10.1016/0375-9474(77)90480-8 | |||||||||
| Record Number: | CaltechAUTHORS:20170816-110615079 | |||||||||
| Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20170816-110615079 | |||||||||
| Official Citation: | P.D. Ingalls, J.C. Overley, H.S. Wilson, Isospin-symmetry-hindered branch of 42Sc β-decay, Nuclear Physics A, Volume 293, Issues 1–2, 12–19 December 1977, Pages 117-124, ISSN 0375-9474, https://doi.org/10.1016/0375-9474(77)90480-8. (http://www.sciencedirect.com/science/article/pii/0375947477904808) | |||||||||
| Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | |||||||||
| ID Code: | 80484 | |||||||||
| Collection: | CaltechAUTHORS | |||||||||
| Deposited By: | Tony Diaz | |||||||||
| Deposited On: | 16 Aug 2017 18:11 | |||||||||
| Last Modified: | 15 Nov 2021 19:36 |
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