Nuclear moments of indium isotopes reveal abrupt change at magic number 82
| العنوان: | Nuclear moments of indium isotopes reveal abrupt change at magic number 82 |
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| المؤلفون: | Vernon, A R, Garcia Ruiz, R F, Miyagi, T, Binnersley, C L, Billowes, J, Bissell, M L, Bonnard, J, Cocolios, T E, Dobaczewski, J, Farooq-Smith, G J, Flanagan, K T, Georgiev, G, Gins, W, de Groote, R P, Heinke, R, Holt, J D, Hustings, J, Koszorús, Á, Leimbach, D, Lynch, K M, Neyens, G, Stroberg, S R, Wilkins, S G, Yang, X F, Yordanov, D T |
| سنة النشر: | 2022 |
| المجموعة: | CERN Document Server (CDS) |
| مصطلحات موضوعية: | Nuclear Physics - Theory |
| الوصف: | In spite of the high-density and strongly correlated nature of the atomic nucleus, experimental and theoretical evidence suggests that around particular ‘magic’ numbers of nucleons, nuclear properties are governed by a single unpaired nucleon$^{1,2}$. A microscopic understanding of the extent of this behaviour and its evolution in neutron-rich nuclei remains an open question in nuclear physics$^{3–5}$. The indium isotopes are considered a textbook example of this phenomenon$^{6}$, in which the constancy of their electromagnetic properties indicated that a single unpaired proton hole can provide the identity of a complex many-nucleon system$^{6,7}$. Here we present precision laser spectroscopy measurements performed to investigate the validity of this simple single-particle picture. Observation of an abrupt change in the dipole moment at N = 82 indicates that, whereas the single-particle picture indeed dominates at neutron magic number N = 82 (refs. $^{2,8}$), it does not for previously studied isotopes. To investigate the microscopic origin of these observations, our work provides a combined effort with developments in two complementary nuclear many-body methods: ab initio valence-space in-medium similarity renormalization group and density functional theory (DFT). We find that the inclusion of time-symmetry-breaking mean fields is essential for a correct description of nuclear magnetic properties, which were previously poorly constrained. These experimental and theoretical findings are key to understanding how seemingly simple single-particle phenomena naturally emerge from complex interactions among protons and neutrons. |
| نوع الوثيقة: | other/unknown material |
| اللغة: | English |
| العلاقة: | http://cds.cern.ch/record/2816118Test; oai:cds.cern.ch:2816118 |
| DOI: | 10.1038/s41586-022-04818-7 |
| DOI: | 10.21203/rs.3.rs-611360/v1 |
| الإتاحة: | https://doi.org/10.1038/s41586-022-04818-7Test https://doi.org/10.21203/rs.3.rs-611360/v1Test http://cds.cern.ch/record/2816118Test |
| رقم الانضمام: | edsbas.7F484BB |
| قاعدة البيانات: | BASE |
| DOI: | 10.1038/s41586-022-04818-7 |
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