Mass and half-life measurements of neutron-deficient iodine isotopes
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Published:2020-05
Issue:5
Volume:56
Page:
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ISSN:1434-6001
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Container-title:The European Physical Journal A
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language:en
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Short-container-title:Eur. Phys. J. A
Author:
Ayet San Andrés SamuelORCID, , 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, Kaur Satbir, Lippert Wayne, Mardor Israel, Mei Bo, Moore Iain, Otto Jan-Hendrick, Pietri Stephane, Pohjalainen Ilkka, Prochazka Andrej, Rappold Christophe, Reiter Moritz P., Tanaka Yoshiki K., Winfield John S.
Abstract
AbstractNeutron-deficient iodine isotopes, $$^{116}$$116I and $$^{114}$$114I, 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 $$^{114}$$114I 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 $$^{114}$$114I ions. Predictions on the possible $$\alpha $$α-decay branch for $$^{114}$$114I are presented based on the reduced uncertainties obtained for the $$Q_{\alpha }$$Qα-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.
Funder
Bundesministerium für Bildung und Forschung Hessisches Ministerium für Wissenschaft und Kunst
Publisher
Springer Science and Business Media LLC
Subject
Nuclear and High Energy Physics
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