تقرير
Summit of the N=40 Island of Inversion: precision mass measurements and ab initio calculations of neutron-rich chromium isotopes
| العنوان: | Summit of the N=40 Island of Inversion: precision mass measurements and ab initio calculations of neutron-rich chromium isotopes |
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| المؤلفون: | Silwal, R., Andreoiu, C., Ashrafkhani, B., Bergmann, J., Brunner, T., Cardona, J., Dietrich, K., Dunling, E., Gwinner, G., Hockenbery, Z., Holt, J. D., Izzo, C., Jacobs, A., Javaji, A., Kootte, B., Lan, Y., Lunney, D., Lykiardopoulou, E. M., Miyagi, T., Mougeot, M., Mukul, I., Murbock, T., Porter, W. S., Reiter, M., Ringuette, J., Dilling, J., Kwiatkowski, A. A. |
| المصدر: | Phys. Lett. B 833, 137288 (2022) |
| سنة النشر: | 2022 |
| مصطلحات موضوعية: | Nuclear Experiment, Nuclear Theory |
| الوصف: | Mass measurements continue to provide invaluable information for elucidating nuclear structure and scenarios of astrophysical interest. The transition region between the $Z = 20$ and $28$ proton shell closures is particularly interesting due to the onset and evolution of nuclear deformation as nuclei become more neutron rich. This provides a critical testing ground for emerging ab-initio nuclear structure models. Here, we present high-precision mass measurements of neutron-rich chromium isotopes using the sensitive electrostatic Multiple-Reflection Time-Of-Flight Mass Spectrometer (MR-TOF-MS) at TRIUMF's Ion Trap for Atomic and Nuclear Science (TITAN) facility. Our high-precision mass measurements of $^{59, 61-63}$Cr confirm previous results, and the improved precision in measurements of $^{64-65}$Cr refine the mass surface beyond N=40. With the ab initio in-medium similarity renormalization group, we examine the trends in collectivity in chromium isotopes and give a complete picture of the N=40 island of inversion from calcium to nickel. Comment: 12 pages, 7 figures |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1016/j.physletb.2022.137288 |
| URL الوصول: | http://arxiv.org/abs/2204.09566 |
| رقم الأكسشن: | edsarx.2204.09566 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1016/j.physletb.2022.137288 |
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