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Dresden 2013 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 31: Struktur und Dynamik von Kernen

HK 31.4: Talk

Tuesday, March 5, 2013, 15:00–15:15, HSZ-301

Gamma spectroscopy of neutron rich actinide nuclei — •Benedikt Birkenbach, Kerstin Geibel, Andreas Vogt, Herbert Hess, Peter Reiter, Tim Steinbach, and David Schneiders — IKP, Universität zu Köln

Excited states in neutron-rich actinide Th and U nuclei were investigated after multi nucleon transfer reactions employing the AGATA demonstrator and PRISMA setup at LNL (INFN, Italy). A primary 136Xe beam of 1 GeV hitting a 238U target was used to produce the nuclei of interest. Beam-like reaction products of Xe- and Ba isotopes after neutron transfer were selected by the PRISMA spectrometer. The recoil like particles were registered by a MCP detector inside the scattering chamber. Coincident γ-rays from excited states in beam and target like particles were measured with the position sensitive AGATA HPGe detectors. Improved Doppler correction and quality of the γ-spectra is based on the novel γ-ray tracking technique which was successfully exploited. First results on the collective properties of various Th and U isotopes will be discussed.

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