A1 Journal article (refereed)
Mass and half-life measurements of neutron-deficient iodine isotopes (2020)

Ayet San Andrés, S., Mollaebrahimi, A., Dickel, T., Bergmann, J., Ebert, J., Geissel, H., Greiner, F., Haettner, E., Hornung, C., Kalantar-Nayestanaki, N., Miskun, I., Plaß, W. R., Purushothaman, S., Rink, A.-K., Scheidenberger, C., Weick, H., Bagchi, S., Constantin, P., Finlay, A., . . . Winfield, J. S. (2020). Mass and half-life measurements of neutron-deficient iodine isotopes. European Physical Journal A, 56(5), Article 143. https://doi.org/10.1140/epja/s10050-020-00153-5

JYU authors or editors

Publication details

All authors or editors: Ayet San Andrés, Samuel; Mollaebrahimi, Ali; Dickel, Timo; Bergmann, Julian; Ebert, Jens; Geissel, Hans; Greiner, Florian; Haettner, Emma; Hornung, Christine; Kalantar-Nayestanaki, Nasser; et al.

Journal or series: European Physical Journal A

ISSN: 1434-6001

eISSN: 1434-601X

Publication year: 2020

Volume: 56

Issue number: 5

Article number: 143

Publisher: Springer

Publication country: Germany

Publication language: English

DOI: https://doi.org/10.1140/epja/s10050-020-00153-5

Publication open access: Openly available

Publication channel open access: Partially open access channel

Publication is parallel published (JYX): https://jyx.jyu.fi/handle/123456789/69266

Abstract

Neutron-deficient iodine isotopes, 116I and 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 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 114I ions. Predictions on the possible α-decay branch for 114I are presented based on the reduced uncertainties obtained for the 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.

Keywords: nuclear physics; isotopes; iodine

Contributing organizations

Ministry reporting: Yes

Reporting Year: 2020

JUFO rating: 1