Dresden 2013 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 31: Struktur und Dynamik von Kernen

HK 31.5: Talk

Tuesday, March 5, 2013, 15:15–15:30, HSZ-301

SONIC - Combining γ and particle spectroscopy in Cologne — •Simon G. Pickstone, Vera Derya, Janis Endres, Andreas Hennig, Jan Mayer, Lars Netterdon, Sorin Pascu, Anne Sauerwein, Philipp Scholz, Mark Spieker, Tina-Mareike Streit, and Andreas Zilges — Institut für Kernphysik, Universität zu Köln

To gain additional information on nuclear structure from particle-induced reactions, the new silicon detector array SONIC consisting of up to eight ΔE-E-telescopes was installed inside the existing HPGe-detector array HORUS in Cologne. Because of the high resolution of the silicon detectors, light ejectiles (p, d, t, and α) can be easily distinguished. The main purpose of this detector array will be the study of inelastic scattering using p, d and α beams delivered by a 10 MV Tandem accelerator. Two test experiments have already been performed. Gating on the excitation of a specific level in ¹⁴⁰Ce(p,p’γ) improved the peak-to-background ratio in the γ-ray spectrum and gave access to additional nuclear structure information. In ¹⁷²Yb(d,Xγ), where X=p, d’, or t, clear discrimination of the ejectiles was achieved. The results of these first test experiments will be presented in detail as well as future improvements of the setup and upcoming experiments.

Supported by the DFG (ZI 510/4-2). S.G. P., V. D., A. H., J. M., A. S., P. S., and M. S. are members of the Bonn-Cologne Graduate School of Physics and Astronomy.