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HK: Fachverband Physik der Hadronen und Kerne

HK 15: Struktur und Dynamik von Kernen III

HK 15.5: Vortrag

Dienstag, 16. März 2010, 15:00–15:15, HG II

Spectroscopy of actinides — •Tanja Kotthaus¹, Peter Reiter¹, Thomas Faestermann², Ralf Hertenberger³, Herbert Hess¹, Marijke Kalkühler¹, Thomas Morgan³, Peter Thirolf³, Andreas Wendt¹, Andreas Wiens¹, and Hans-Friedrich Wirth³ — ¹IKP, Köln — ²TU, München — ³LMU, München

Nuclear structure of heavy deformed nuclei is dominated by the interplay of collective and single-particle excitations. In the actinide region the octupol degree of freedom has to be added. There is still no satisfying theoretical description which includes all this. Experiments were performed at the Munich Q3D spectrometer utilizing the direct transfer reactions (d^→,p) and (d^→,t) to study the isotones ²³¹Th, ²³²Pa and ²³³U and the isotope ²³⁰Pa. The use of the polarized deuteron beam enables to deduce not only the orbital angular momentum transfer Δ l but also the angular distribution of the analyzing power. This provides direct access to the total angular momentum transfer Δ j. For the two odd-odd nuclei ²³⁰Pa and ²³²Pa first time results on excited states will be presented. Several new spin and parity assignments were obtained for the well known isotopes ²³¹Th and ²³³U as a basis of future theoretical investigations in this mass region.