| Автор | P O Lipas |
| Автор | A Gelberg |
| Дата выпуска | 1990-11-01 |
| dc.description | In the basic interacting-boson model (sd IBA-1), as well as in other one-fluid collective models of nuclear structure, the magnetic dipole operator in leading order is proportional to the angular momentum and cannot produce transitions. Phenomenological second-order terms are therefore needed. The origin of these terms in IBA-1 is traced back to the proton-neutron two-fluid model IBA-2 in two ways. First, an IBA-2 second-order M1 operator is proposed as a mapping of the linear operator to the space of pure F spin and the second-order operator is projected onto IBA-1 space. Second, the linear operator of IBA-2 is mapped directly to the quadratic operator of IBA-1. Explicit calculations are carried out in a pure and a perturbed U(5) limit. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | Quadratic M1 operator in the IBA |
| Тип | paper |
| DOI | 10.1088/0954-3899/16/11/016 |
| Electronic ISSN | 1361-6471 |
| Print ISSN | 0954-3899 |
| Журнал | Journal of Physics G: Nuclear and Particle Physics |
| Том | 16 |
| Первая страница | 1669 |
| Последняя страница | 1683 |
| Аффилиация | P O Lipas; Inst. fur Kernphys., Koln Univ., West Germany |
| Аффилиация | A Gelberg; Inst. fur Kernphys., Koln Univ., West Germany |
| Выпуск | 11 |
