Charge radii and electromagnetic moments of 214-218Bi: Exploring the "southern" border of the Z > 82 octupole-deformation region
The changes in the mean-squared charge radii relative to 209Bi126 (δ(r 2) N,126), the magnetic dipole and electric quadrupole moments in214−218Bi have been measured using the in-source resonanceionization spectroscopy technique at ISOLDE (CERN). Magnetic moments of odd-odd bismuth nuclei have been a...
| Autores: | , , , , , , , , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2025 |
| País: | España |
| Institución: | Universidad Complutense de Madrid (UCM) |
| Repositorio: | Docta Complutense |
| Idioma: | inglés |
| OAI Identifier: | oai:docta.ucm.es:20.500.14352/124654 |
| Acceso en línea: | https://hdl.handle.net/20.500.14352/124654 |
| Access Level: | acceso abierto |
| Palabra clave: | 539.1 Nuclear radii Nuclear shapes and moments Nuclear spin & parity Nuclear structures & decays Spectroscopic factors & electromagnetic moments 190≤ A ≤219 Física nuclear 2207 Física Atómica y Nuclear |
| Sumario: | The changes in the mean-squared charge radii relative to 209Bi126 (δ(r 2) N,126), the magnetic dipole and electric quadrupole moments in214−218Bi have been measured using the in-source resonanceionization spectroscopy technique at ISOLDE (CERN). Magnetic moments of odd-odd bismuth nuclei have been analyzed by the additivity relation. Previous tentative spin-parity and configuration assignments based on the β-decay feeding patterns have been supported. A normal odd-even staggering in charge radii of bismuth isotopes with N > 126 has been observed. The new data for the δ(r 2) of bismuth isotopes allow a study of the isotonic dependencies in the charge radii, revealing jumps in δ(r2)132,126 and δ(r2)134,126 at Z = 84. This pattern could be explained by a sudden onset of octupole deformation at N = 132 and 134 when going from polonium (Z = 84) to astatine (Z = 85). |
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