Direct Mass Measurements on the Superallowed Emitter $^{74}$Rb and its Daughter $^{74}$Kr
| Autor: | Kellerbauer, A. G., Audi, G., Beck, D., Blaum, K., Bollen, G., Brown, B. A., Delahaye, P., Guénaut, C., Herfurth, F., Kluge, H. J., Lunney, D., Schwarz, S., Schweikhard, L., Yazidjian, C. |
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| Přispěvatelé: | Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse (CSNSM), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11) |
| Jazyk: | angličtina |
| Rok vydání: | 2004 |
| Předmět: | |
| Zdroj: | Physical Review Letters Physical Review Letters, American Physical Society, 2004, 93, pp.072502. ⟨10.1103/PhysRevLett.93.072502⟩ |
| ISSN: | 0031-9007 1079-7114 |
| DOI: | 10.1103/PhysRevLett.93.072502⟩ |
| Popis: | The decay energy of the superallowed ? decay 74Rb(?+)74Kr was determined by direct Penning trap mass measurements on both the mother and the daughter nuclide using the time-of-flight resonance technique and found to be Q = 10416.8(4.5) keV. The exotic nuclide 74Rb, with a half-life of only 65 ms, is the shortest-lived nuclide on which a high-precision mass measurement in a Penning trap has been carried out. Together with existing data for the partial half-life as well as theoretical corrections, the decay energy yields a comparative half-life of Ft = 3084(15) s for this decay, in agreement with the mean value for the series of the lighter nuclides from 10C to 54Co. Assuming conserved vector current, this result allows for an experimental determination of the isospin-symmetry-breaking correction ?C. |
| Databáze: | OpenAIRE |
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