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Beta decay of the proton-rich nuclei 102Sn and 104Sn |
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| Authors: | M Karny L Batist A Banu F Becker A Blazhev B A Brown W Brüchle J Döring T Faestermann M Górska H Grawe Z Janas A Jungclaus M Kavatsyuk O Kavatsyuk R Kirchner M La Commara S Mandal C Mazzocchi K Miernik I Mukha S Muralithar C Plettner A Płochocki E Roeckl M Romoli K Rykaczewski M Schädel K Schmidt R Schwengner J Żylicz |
| Institution: | 1. Institute of Experimental Physics, University of Warsaw, Poland 2. St. Petersburg Nuclear Physics Institute, Russia 3. Gesellschaft für Schwerionenforschung, Darmstadt, Germany 4. University of Sofia, Bulgaria 5. NSCL, Department of Physics and Astronomy, Michigan State University, USA 6. Technische Universit?t München, Germany 7. Departamento de Fisica Teórica, Universidad Autonoma de Madrid, Spain 8. Taras Shevchenko Kiev National University, Ukraine 9. Dipartimento Scienze Fisiche, Università “Federico II” and INFN Napoli, Italy 10. Nuclear Science Center, New Delhi, India 11. Oak Ridge National Laboratory, USA 12. Continental Teves AG & Co., Frankfurt am Main, Germany 13. Institut für Kern- und Hadronenphysik, Forschungszentrum Rossendorf, Dresden, Germany |
| Abstract: | The β decays of 102Sn and 104Sn were studied by using high-resolution germanium detectors as well as a Total Absorption Spectrometer (TAS). For 104Sn, with three new β-delayed γ-rays identified, the total Gamow-Teller strength (BGT) value of 2.7(3) was obtained. For 102Sn, the γ-γ coincidence data were collected for the first time, allowing us to considerably extend the decay scheme. This scheme was used to unfold the TAS data and to deduce a BGT value of 4.2(8) for this decay. This result is compared to shell model predictions, yielding a hindrance factor of 3.6(7) in agreement with those obtained previously for 98Cd and 100In. Together with the latter two, 102Sn completes the triplet of Z ⩽ 50, N ≥ 50 nuclei with two proton holes, one proton hole and one neutron particle, and two neutron particles with respect to the doubly magic 100Sn core. |
| Keywords: | 21 10 -k Properties of nuclei nuclear energy levels 23 40 -s Beta decay double β decay electron and muon capture 23 20 Lv Gamma transitions and level energies 27 60 +j 90≤ A≤ 149 |
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