Mainz 2012 – wissenschaftliches Programm

Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe

HK: Fachverband Physik der Hadronen und Kerne

HK 43: Struktur und Dynamik von Kernen

HK 43.5: Vortrag

Donnerstag, 22. März 2012, 17:45–18:00, P 4

Probing the Quadrupole Collectivity of ¹²⁸Cd using Coulomb Excitation — •Sabine Bönig, Thorsten Kröll, Marcus Scheck, and Michael Thürauf — Technische Universität Darmstadt

¹²⁸Cd is only two proton and two neutron holes away from the doubly magic nucleus ¹³²Sn. The excitation energy of the first excited 2⁺-state decreases when approaching the neutron shell closure. This unexpected behaviour makes this nucleus interesting for investigation. So far, contradicting theoretical predictions for the B(E2,0⁺→ 2⁺) value of ¹²⁸Cd exist. While shell model calculations conclude an almost spherical shape of ¹²⁸Cd, beyond mean field calculations predict an already considerable quadrupole collectivity. In this contribution the experimental details of the Coulomb excitation of ¹²⁸Cd at REX-ISOLDE, investigated with MINIBALL (experiment IS477), will be presented. Furthermore the current status of the analysis to determine the transition strength of the ground state into the first excited 2⁺ state will be shown. This project is supported by BMBF (No. 06 DA 9036I), HIC for FAIR and EU through ENSAR (No. 262010).