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HK: Fachverband Physik der Hadronen und Kerne

HK 41: Struktur und Dynamik von Kernen

HK 41.4: Vortrag

Dienstag, 5. März 2013, 17:45–18:00, HSZ-301

B(E2) measurement for neutron deficient ¹⁰⁴Sn. — •Giulia Guastalla^1,2, Douglas Di Julio³, Magdalena Górska², Joakim Cederkäll³, Norbert Pietralla¹, Jürgen Gerl², and Hans Jürgen Wollersheim² — ¹Institut für Kernphysik, Technische Universität Darmstadt, Darmstadt, Germany — ²GSI, Darmstadt, Germany — ³Lund University, Lund, Sweden

The reduced transition probability B(E2: 0⁺ → 2⁺) = 0.10(4) e²b² has been measured for ¹⁰⁴Sn using the relativistic Coulomb excitation technique with the PreSPEC setup at GSI. ¹⁰⁴Sn is the closest isotope to ¹⁰⁰Sn, the heaviest self-conjugate doubly magic nucleus, for which information on the E2 excitation strength is available now. Our result is therefore important for the conclusion on cross-shell excitations near ¹⁰⁰Sn. It agrees with theoretical calculations that themselves are in conflict with data on ^106,108Sn[1]. The data and their consequences are discussed. Supported by the BMBF under Nos. 05P09RDFN4, 05P12RDFN8, and by the LOEWE center HIC for FAIR.

[1] A. Jungclaus et al., Phys. Lett. B 695, 110 (2011).