Mapping the N=40 island of inversion: Precision mass measurements of neutron-rich Fe isotopes
- Porter, W.S.
- Ashrafkhani, B.
- Bergmann, J.
- Brown, C.
- Brunner, T.
- Cardona, J.D.
- Curien, D.
- Dedes, I.
- Dickel, T.
- Dudek, J.
- Dunling, E.
- Gwinner, G.
- Hockenbery, Z.
- Holt, J.D.
- Hornung, C.
- Izzo, C.
- Jacobs, A.
- Javaji, A.
- Kootte, B.
- Kripkó-Koncz, G.
- Lykiardopoulou, E.M.
- Miyagi, T.
- Mukul, I.
- Murböck, T.
- Plass, W.R.
- Reiter, M.P.
- Ringuette, J.
- Scheidenberger, C.
- Silwal, R.
- Walls, C.
- Wang, H.L.
- Wang, Y.
- Yang, J.
- Dilling, J.
- Kwiatkowski, A.A.
DOIAbstract
International audienceNuclear properties across the chart of nuclides are key to improving and validating our understanding of the strong interaction in nuclear physics. We present high-precision mass measurements of neutron-rich Fe isotopes performed at the TITAN facility. The multiple-reflection time-of-flight mass spectrometer (MR-ToF-MS), achieving a resolving power greater than 600000 for the first time, enabled the measurement of Fe63–70, including first-time high-precision direct measurements (δm/m≈10−7) of Fe68–70, as well as the discovery of a long-lived isomeric state in Fe69. These measurements are accompanied by both mean-field and ab initio calculations using the most recent realizations which enable theoretical assignment of t...
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