Unexpected distribution of ν1f7/2 strength in Ca 49
| Autor: | Crawford, H. L., Macchiavelli, A. O., Fallon, P., Albers, M., Bader, V. M., Bazin, D., Campbell, C. M., Clark, R. M., Cromaz, M., Dilling, J., Gade, A., Gallant, A., Holt, J. D., Janssens, R. V.F., Krücken, R., Langer, C., Lauritsen, T., Lee, I. Y., Menéndez, J., Noji, S., Paschalis, S., Recchia, F., Rissanen, J., Schwenk, A., Scott, M., Simonis, J., Stroberg, S. R., Tostevin, J. A., Walz, C., Weisshaar, D., Wiens, A., Wimmer, K., Zhu, S. |
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| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: | |
| Zdroj: | Crawford, HL; Macchiavelli, AO; Fallon, P; Albers, M; Bader, VM; Bazin, D; et al.(2017). Unexpected distribution of ν1f7/2 strength in Ca 49. Physical Review C, 95(6). doi: 10.1103/PhysRevC.95.064317. Lawrence Berkeley National Laboratory: Retrieved from: http://www.escholarship.org/uc/item/2th4p34f Physical Review C, vol 95, iss 6 |
| ISSN: | 2469-9993 |
| Popis: | © 2017 American Physical Society. The calcium isotopes have emerged as a critical testing ground for new microscopically derived shell-model interactions, and a great deal of experimental and theoretical focus has been directed toward this region. We investigate the relative spectroscopic strengths associated with 1f7/2 neutron hole states in Ca47,49 following one-neutron knockout reactions from Ca48,50. The observed reduction of strength populating the 7/21- state in Ca49, as compared to Ca47, is inconsistent with shell-model calculations using both phenomenological interactions such as GXPF1, and interactions derived from microscopically based two- and three-nucleon forces. The result suggests a fragmentation of the l=3 strength to higher-lying states as suggested by the microscopic calculations, but the observed magnitude of the reduction is not reproduced in any shell-model description. |
| Databáze: | OpenAIRE |
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