SMuK 2023 – wissenschaftliches Programm
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HK: Fachverband Physik der Hadronen und Kerne
HK 60: Structure and Dynamics of Nuclei XII
HK 60.6: Vortrag
Donnerstag, 23. März 2023, 15:15–15:30, SCH/A215
Systematic investigation of the low-energy electric dipole response in 116, 118Sn using the (d,pγ) reaction — •Markus Müllenmeister, Michael Weinert, Florian Kluwig, Miriam Müscher, and Andreas Zilges — University of Cologne, Institute for Nuclear Physics
The so-called Pygmy Dipole Resonance (PDR) has been a research topic of great interest in recent decades. While the general properties of this excitation is well known [1], there are still questions about its structure. For the study of this underlying structure, experiments sensitive to different aspects of the nucleus are vital [2]. The (d,pγ) reaction has been shown to be a selective probe for the microscopic character of certain states. The tin isotopic chain in particular is an interesting subject for this kind of investigation, as its magic proton number (Z=50) provides several isotopes accessible for this reaction. As the (d,pγ) reaction was already studied in depth for 119Sn(d,pγ )120Sn [3], similar experiments were performed at the SONIC@HORUS setup [4] in Cologne on the other two available isotopes 115,117Sn to study excitations in 116,118Sn. The results of these experiments will be shown. Supported by the DFG (ZI 510/10-1).
[1] A. Bracco et al., Prog. Part. Nucl. Phys. 106 (2019) 360
[2] D. Savran et al., Phys. Lett. B 786 (2018) 16
[3] M. Weinert et al., Phys. Rev. Lett. 127 (2021) 242501
[4] S. G. Pickstone et al., Nucl. Instr. and Meth. 875 (2017) 104