Frankfurt 2014 – wissenschaftliches Programm
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HK: Fachverband Physik der Hadronen und Kerne
HK 31: Struktur und Dynamik von Kernen
HK 31.8: Vortrag
Mittwoch, 19. März 2014, 18:45–19:00, HZ 4
First results of a 92Mo(p,p’γ) experiment performed with SONIC&HORUS — •Simon G. Pickstone, Vera Derya, Andreas Hennig, Mark Spieker, Julius Wilhelmy, and Andreas Zilges — Institute for Nuclear Physics, University of Cologne
To gain additional information on nuclear structure from particle-induced reactions, the new silicon-detector array SONIC with 8 ΔE-E-telescopes was installed inside the existing γ array HORUS consisting of 14 HPGe detectors. The main purpose of the combined setup will be the study of inelastic scattering experiments using p, d and α beams delivered by the Cologne 10 MV Tandem accelerator.
Since the excitation of the target nucleus is uniquely determined by the energy loss of the projectile, gates on the excitation of specific levels or on a certain final level can be set. Due to the angular granularity of SONIC&HORUS, angular correlations between the ejectile and the emitted γ ray can be measured, which gives access to the spin of the level. Using the particle identification capabilities, light ejectiles (p to α) can be easily distinguished, allowing the study of weaker reaction channels, e.g. inelastic scattering, even if the cross section is dominated by others, e.g. transfer reactions.
As a first physics test case, the reaction 92Mo(p,p’γ) was measured. Preliminary results of this experiment will be shown, concentrating on states and decay properties of the Pygmy Dipole Resonance.
Supported by the DFG (ZI 510/4-2).