Low-energy M1 modes in germanium isotopes
Magnetic dipole strength functions are determined for the series of germanium isotopes from N = 30 to 48 on the basis of a large number of transition strengths calculated within the shell model. The evolution of the strength with increasing neutron number in the 1g9/2 orbital is analyzed. An enhance...
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EDP Sciences
2025-01-01
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| Series: | EPJ Web of Conferences |
| Online Access: | https://www.epj-conferences.org/articles/epjconf/pdf/2025/14/epjconf_cgs17_02003.pdf |
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| author | Schwengner Ronald Frauendorf Stefan |
| author_facet | Schwengner Ronald Frauendorf Stefan |
| author_sort | Schwengner Ronald |
| collection | DOAJ |
| description | Magnetic dipole strength functions are determined for the series of germanium isotopes from N = 30 to 48 on the basis of a large number of transition strengths calculated within the shell model. The evolution of the strength with increasing neutron number in the 1g9/2 orbital is analyzed. An enhancement toward low transition energy and a resonance in the region of the scissors mode are identified. The low-energy enhancement is strongest near closed shells, in particular at the almost completely filled 1g9/2 orbital, while the scissorslike resonance is most pronounced in the middle of the open shell, which correlates with the magnitude of the also deduced electric quadrupole transition strengths. The results are consistent with previous findings for the shorter series of iron isotopes and prove the occurrence and correlation of the two low-lying magnetic dipole modes as a global structural feature. |
| format | Article |
| id | doaj-art-45b8f41e6c1d46f0bbe3a8ae1fd90100 |
| institution | OA Journals |
| issn | 2100-014X |
| language | English |
| publishDate | 2025-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | EPJ Web of Conferences |
| spelling | doaj-art-45b8f41e6c1d46f0bbe3a8ae1fd901002025-08-20T02:35:30ZengEDP SciencesEPJ Web of Conferences2100-014X2025-01-013290200310.1051/epjconf/202532902003epjconf_cgs17_02003Low-energy M1 modes in germanium isotopesSchwengner Ronald0Frauendorf Stefan1Helmholtz-Zentrum Dresden-RossendorfDepartment of Physics, University of Notre Dame,Notre DameMagnetic dipole strength functions are determined for the series of germanium isotopes from N = 30 to 48 on the basis of a large number of transition strengths calculated within the shell model. The evolution of the strength with increasing neutron number in the 1g9/2 orbital is analyzed. An enhancement toward low transition energy and a resonance in the region of the scissors mode are identified. The low-energy enhancement is strongest near closed shells, in particular at the almost completely filled 1g9/2 orbital, while the scissorslike resonance is most pronounced in the middle of the open shell, which correlates with the magnitude of the also deduced electric quadrupole transition strengths. The results are consistent with previous findings for the shorter series of iron isotopes and prove the occurrence and correlation of the two low-lying magnetic dipole modes as a global structural feature.https://www.epj-conferences.org/articles/epjconf/pdf/2025/14/epjconf_cgs17_02003.pdf |
| spellingShingle | Schwengner Ronald Frauendorf Stefan Low-energy M1 modes in germanium isotopes EPJ Web of Conferences |
| title | Low-energy M1 modes in germanium isotopes |
| title_full | Low-energy M1 modes in germanium isotopes |
| title_fullStr | Low-energy M1 modes in germanium isotopes |
| title_full_unstemmed | Low-energy M1 modes in germanium isotopes |
| title_short | Low-energy M1 modes in germanium isotopes |
| title_sort | low energy m1 modes in germanium isotopes |
| url | https://www.epj-conferences.org/articles/epjconf/pdf/2025/14/epjconf_cgs17_02003.pdf |
| work_keys_str_mv | AT schwengnerronald lowenergym1modesingermaniumisotopes AT frauendorfstefan lowenergym1modesingermaniumisotopes |