2024/10/06 by Chris M. Ireland, Ireland, C. M., F.M. Maier +43 · 1 citation
Medicine · Physics and Astronomy · #Advanced X-ray Imaging Techniques #FOS: Physical sciences #History and Developments in Astronomy #Medical Imaging Techniques and Applications #Nuclear Experiment (nucl-ex)
paper · pdf · doi:10.48550/arxiv.2410.04650
openalex publication_date 2024/10/06 · openalex created_date 2024/10/12 · openalex updated_date 2026/07/31
As a step towards the ultimate goal of a high-precision mass measurement of doubly-magic 100Sn, the mass of 103Sn was measured at the Low Energy Beam and Ion Trap (LEBIT) located at the Facility for Rare Isotope Beams (FRIB). Utilizing the time-of-flight ion cyclotron resonance (ToF-ICR) technique, a mass uncertainty of 3.7~keV was achieved, an improvement by more than an order of magnitude compared to a recent measurement performed in 2023 at the Cooler Storage Ring (CSRe) in Lanzhou. Although the LEBIT and CSRe mass measurements of 103Sn are in agreement, they diverge from the experimental mass value reported in the 2016 version of the Atomic Mass Evaluation (AME2016), which was derived from the measured Qβ+ value and the mass of 103In. In AME2020, this indirectly measured 103Sn mass was classified as a `seriously irregular mass' and replaced with an extrapolated value, which aligns with the most recent measured values from CSRe and LEBIT. As such, the smoothness of the mass surface is confidently reestablished for 103Sn. Furthermore, LEBIT's mass measurement of 103Sn enabled a significant reduction in the mass uncertainties of five parent isotopes which are now dominated by uncertainties in their respective Q-values.