1. Mass and half-life measurements of neutron-deficient iodine isotopes.
- Author
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Ayet San Andrés, Samuel, Mollaebrahimi, Ali, Dickel, Timo, Bergmann, Julian, Ebert, Jens, Geissel, Hans, Greiner, Florian, Haettner, Emma, Hornung, Christine, Kalantar-Nayestanaki, Nasser, Miskun, Ivan, Plaß, Wolfgang R., Purushothaman, Sivaji, Rink, Ann-Kathrin, Scheidenberger, Christoph, Weick, Helmut, Bagchi, Soumya, Constantin, Paul, Finlay, Andrew, and Kaur, Satbir
- Subjects
MASS measurement ,IODINE isotopes ,RELATIVISTIC energy ,TIME-of-flight measurements ,FORECASTING ,ISOTOPES - Abstract
Neutron-deficient iodine isotopes, 116 I and 114 I, were produced at relativistic energies by in-flight fragmentation at the Fragment Separator (FRS) at GSI. The FRS Ion Catcher was used to thermalize the ions and to perform highly accurate mass measurements with a Multiple-Reflection Time-of-Flight Mass-Spectrometer (MR-TOF-MS). The masses of both isotopes were measured directly for the first time. The half-life of the 114 I was measured by storing the ions in an RF quadrupole for different storage times and counting the remaining nuclei with the MR-TOF-MS. The measured half-life was used to assign the ground state to the measured 114 I ions. Predictions on the possible α -decay branch for 114 I are presented based on the reduced uncertainties obtained for the Q α -value. Systematic studies of the mass surface were performed with the newly obtained masses, showing better agreement with the expected trend in this mass region. [ABSTRACT FROM AUTHOR]
- Published
- 2020
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