2024/02/06 by Sota Kimura, M. Wada, Kimura, Sota +16 · 2 citations
Engineering · Physics and Astronomy · #FOS: Physical sciences #Nuclear Experiment (nucl-ex) #Nuclear Physics and Applications #Nuclear physics research studies #Nuclear reactor physics and engineering
paper · pdf · doi:10.48550/arxiv.2402.03873
openalex publication_date 2024/02/06 · openalex created_date 2024/02/08 · openalex updated_date 2026/07/28
We report the mass measurements of neutron-rich isotopes produced via spontaneous fission of 252Cf using a multi-reflection time-of-flight mass spectrograph. The mass of 155Ce is determined experimentally for the first time. A discrepancy between the experimental and literature values was found for the mass of 127Sb, which was previously deduced through indirect measurements. In comparison with several theoretical predictions, both the values and the trend of the mass excesses of 152-155Ce cannot be consistently explained. The wide-range and simultaneous mass measurements of the multi-reflection time-of-flight mass spectrograph enable us to cross-check the existing mass data, and the conflict between the measured time-of-flight ratio and the extracted mass would imply the necessity of reexamining them.