Petermann, I. ; Martínez-Pinedo, G. ; Langanke, K. ; Caurier, E. (2007)
Breaking of the SU(4) limit for the Gamow-Teller strength in N ∼ Z nuclei.
In: Eur. Phys. J. A, 34 (3)
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
We have performed large-scale shell model calculations of the Gamow-Teller strength distributions in N ? Z pf -shell nuclei. These calculations were motivated by the experimental attempts to measure the low-lying GT strength for the even-even N = Z + 2 or N = Z - 2 nuclei 46Ti , 50Cr , 54Fe and 62Ge , where a sizable low-energy GT strength could be interpreted as reminiscence of SU(4) symmetry; in the limit of exact SU(4) symmetry the GT- strength would be concentrated in a single transition to the lowest T = 0, J = 1+ state in the daughter. We confirm that the SU(4) symmetry is strongly broken by the spin-orbit interaction and by increasing neutron excess.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2007 |
| Autor(en): | Petermann, I. ; Martínez-Pinedo, G. ; Langanke, K. ; Caurier, E. |
| Art des Eintrags: | Bibliographie |
| Titel: | Breaking of the SU(4) limit for the Gamow-Teller strength in N ∼ Z nuclei |
| Sprache: | Englisch |
| Publikationsjahr: | Dezember 2007 |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Eur. Phys. J. A |
| Jahrgang/Volume einer Zeitschrift: | 34 |
| (Heft-)Nummer: | 3 |
| URL / URN: | http://dx.doi.org/10.1140/epja/i2007-10502-7 |
| Kurzbeschreibung (Abstract): | We have performed large-scale shell model calculations of the Gamow-Teller strength distributions in N ? Z pf -shell nuclei. These calculations were motivated by the experimental attempts to measure the low-lying GT strength for the even-even N = Z + 2 or N = Z - 2 nuclei 46Ti , 50Cr , 54Fe and 62Ge , where a sizable low-energy GT strength could be interpreted as reminiscence of SU(4) symmetry; in the limit of exact SU(4) symmetry the GT- strength would be concentrated in a single transition to the lowest T = 0, J = 1+ state in the daughter. We confirm that the SU(4) symmetry is strongly broken by the spin-orbit interaction and by increasing neutron excess. |
| Fachbereich(e)/-gebiet(e): | 05 Fachbereich Physik 05 Fachbereich Physik > Institut für Festkörperphysik (2021 umbenannt in Institut für Physik Kondensierter Materie (IPKM)) |
| Hinterlegungsdatum: | 20 Jan 2009 12:12 |
| Letzte Änderung: | 26 Aug 2018 21:24 |
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