Abstract
The masses of , , and have been measured with the ISOLTRAP Penning-trap spectrometer at ISOLDE/CERN. The results are in agreement with previous mass measurements and uncertainties have been decreased. The mass of was determined in two configurations, one following direct production by the ISOLDE facility, favoring the state, expected to be the ground state, second by in-trap decay of , followed by recoil-ion trapping, favoring the production of the isomeric state. A position-sensitive detector was used to clean the ToF-ICR resonance. In addition, the mass of the refractory doubly magic nucleus was directly measured, using the in-trap decay of , following two sequential recoil-ion captures. The approach, challenges and conclusions are discussed.
- Received 28 February 2019
- Revised 21 May 2019
DOI:https://doi.org/10.1103/PhysRevC.100.014304
Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.
Published by the American Physical Society