Heidelberg 2015 – wissenschaftliches Programm
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HK: Fachverband Physik der Hadronen und Kerne
HK 63: Structure and Dynamics of Nuclei 12
HK 63.4: Vortrag
Donnerstag, 26. März 2015, 18:00–18:15, P/H2
Decay behaviour of 1− states in 92,94Mo observed with SONIC@HORUS — •Simon G. Pickstone, Vera Derya, Andreas Hennig, Mark Spieker, Michael Weinert, Julius Wilhelmy, and Andreas Zilges — Institute for Nuclear Physics, University of Cologne
In the last decade, the Pygmy Dipole Resonance (PDR) has attracted a lot of interest both in experimental and theoretical nuclear physics. However, some key observables are still not easily accessible. One of these is the decay branching of the PDR to excited states, which is a sensitive measure of the wave functions. To gain access to this observable, the new setup SONIC@HORUS consisting of silicon and HPGe detectors at the Institute for Nuclear Physics in Cologne was used to investigate the two molybdenum isotopes 92Mo and 94Mo in inelastic proton scattering experiments. In these experiments, both the energy of the γ-ray and of the particle were measured in coincidence with high energy resolution and in the offline analysis, specific excitation and de-excitation patterns were studied.
The results of the 92Mo(p,p’γ) experiment will be presented, giving insight into the state-to-state decay behaviour of the PDR. Additionally, preliminary results of the 94Mo(p,p’γ) experiment will be shown, focussing on the same observable for this non-magic nucleus. Supported by the DFG (ZI 510/4-2).