Bochum 2018 – wissenschaftliches Programm
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HK: Fachverband Physik der Hadronen und Kerne
HK 40: Structure and Dynamics of Nuclei VIII
HK 40.5: Vortrag
Mittwoch, 28. Februar 2018, 17:45–18:00, HZO 70
Study of the dipole response in 142Ce — •Miriam Müscher1, Anna Bohn1, Michelle Färber1, Johann Isaak2, Simon G. Pickstone1, Sarah Prill1, Deniz Savran3, Philipp Scholz1, Mark Spieker1,4, Vera Vielmetter1, Michael Weinert1, Julius Wilhelmy1, and Andreas Zilges1 — 1Institute for Nuclear Physics, University of Cologne — 2RCNP, Osaka, Japan — 3GSI, Darmstadt — 4NSCL, Michigan State University, MI 48824, USA
The N = 84 nucleus 142Ce has been investigated in real photon scattering experiments to analyze the dipole response’s evolution near the N = 82 shell closure. Two (γ,γ) experiments that selectively excite J = 1 states were performed. Firstly, 142Ce was measured at the Darmstadt High Intensity Photon Setup (DHIPS) [1] using bremsstrahlung with an endpoint energy of 7.35 MeV. Secondly, an experiment was performed with a linearly polarized, quasi mono-energetic γ beam in the entrance channel at ten different beam energies at the High Intensity Gamma-Ray Source (HIγS) [2] facility of Duke University, Durham, USA. The photons of the subsequent decay provide information on ground state widths and parity quantum numbers of excited states. Within this contribution the experimental setups will be presented and first results will be discussed.
Supported by the DFG (ZI 510/7-1) and the Alliance Program of the Helmholtz Association (HA216/EMMI). JW is supported by the BCGS.
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