Structure of P and SI in a two-level shape-coexistence model
Exclusive cross sections for the P43(−1p)Si42 reaction to the lowest 0+ and 2+ states, measured at NSCL with GRETINA and the S800, are interpreted in terms of a two-level mixing (collective) model of oblate and prolate coexisting shapes. Using the formalism developed for deformed nuclei, we calculat...
| Autores: | , , , , , , , , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2022 |
| País: | España |
| Institución: | Universidad Autónoma de Madrid |
| Repositorio: | Biblos-e Archivo. Repositorio Institucional de la UAM |
| Idioma: | inglés |
| OAI Identifier: | oai:repositorio.uam.es:10486/714624 |
| Acceso en línea: | http://hdl.handle.net/10486/714624 https://dx.doi.org/10.1103/PhysRevC.105.014309 |
| Access Level: | acceso abierto |
| Palabra clave: | Nuclear reactions Collective levels Nuclear structure and decays Proton Física |
| Sumario: | Exclusive cross sections for the P43(−1p)Si42 reaction to the lowest 0+ and 2+ states, measured at NSCL with GRETINA and the S800, are interpreted in terms of a two-level mixing (collective) model of oblate and prolate coexisting shapes. Using the formalism developed for deformed nuclei, we calculate the spectroscopic amplitudes and exclusive cross sections in the strong-coupling limit, where for P43 the schematic wave function includes the coupling of the Nilsson [211]12 proton orbit. Good agreement with the experimental data is obtained when the amplitude of the oblate configuration is ≳80%, suggesting that both nuclei are predominantly oblate, in line with theoretical expectations. Model predictions for excitation energies and electromagnetic observables, which could motivate further studies of both nuclei, are also presented |
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