Comprehensive mass measurement study of ${}^{252}$Cf fission fragments with MRTOF-MS and detailed study of masses of neutron-rich Ce isotopes
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arXiv
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| Format: | Preprint |
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2024
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| author | Kimura, Sota Wada, Michiharu Haba, Hiromitsu Ishiyama, Hironobu Ishizawa, Satoshi Ito, Yuta Niwase, Toshitaka Rosenbusch, Marco Schury, Peter Takamine, Aiko |
| author_facet | Kimura, Sota Wada, Michiharu Haba, Hiromitsu Ishiyama, Hironobu Ishizawa, Satoshi Ito, Yuta Niwase, Toshitaka Rosenbusch, Marco Schury, Peter Takamine, Aiko |
| contents | We report the mass measurements of neutron-rich isotopes produced via spontaneous fission of ${}^{252}$Cf using a multi-reflection time-of-flight mass spectrograph. The mass of ${}^{155}$Ce is determined experimentally for the first time. A discrepancy between the experimental and literature values was found for the mass of ${}^{127}$Sb, which was previously deduced through indirect measurements. In comparison with several theoretical predictions, both the values and the trend of the mass excesses of ${}^{152-155}$Ce 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. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2402_03873 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Comprehensive mass measurement study of ${}^{252}$Cf fission fragments with MRTOF-MS and detailed study of masses of neutron-rich Ce isotopes Kimura, Sota Wada, Michiharu Haba, Hiromitsu Ishiyama, Hironobu Ishizawa, Satoshi Ito, Yuta Niwase, Toshitaka Rosenbusch, Marco Schury, Peter Takamine, Aiko Nuclear Experiment We report the mass measurements of neutron-rich isotopes produced via spontaneous fission of ${}^{252}$Cf using a multi-reflection time-of-flight mass spectrograph. The mass of ${}^{155}$Ce is determined experimentally for the first time. A discrepancy between the experimental and literature values was found for the mass of ${}^{127}$Sb, which was previously deduced through indirect measurements. In comparison with several theoretical predictions, both the values and the trend of the mass excesses of ${}^{152-155}$Ce 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. |
| title | Comprehensive mass measurement study of ${}^{252}$Cf fission fragments with MRTOF-MS and detailed study of masses of neutron-rich Ce isotopes |
| topic | Nuclear Experiment |
| url | https://arxiv.org/abs/2402.03873 |