Köln 2025 – wissenschaftliches Programm
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HK: Fachverband Physik der Hadronen und Kerne
HK 1: Structure and Dynamics of Nuclei I
HK 1.4: Vortrag
Montag, 10. März 2025, 16:00–16:15, HS 2 Physik
Lifetimes of excited states in 116,118Sn — •Sarah Prill, Elias Binger, Anna Bohn, Tobias Langel, Michael Weinert, and Andreas Zilges — University of Cologne, Institute for Nuclear Physics, Germany
The proton-magic tin isotopic chain has the highest number of stable isotopes and is therefore an ideal candidate to study nuclear properties in a wide range of nuclei. Lifetimes of excited states in the femtosecond range have already been determined in Cologne for 112Sn and 114Sn [1] using the Coincidence Doppler-Shift Attenuation Method (CDSAM) [2,3]. The study was continued for the nuclei 116Sn and 118Sn, using not only inelastic proton scattering but also alpha particles as the beam.
Coincidence data were recorded with the SONIC@HORUS setup [4] at the tandem accelerator of the University of Cologne. Combining particle and γ-ray detection allowed the reconstruction of the reaction kinematics and enabled the analysis of single levels without feeding contributions.
This presentation will show the lifetime results for 116Sn and 118Sn and discuss the influence of different beam particles.
Supported by the DFG (ZI 510/9-2).
[1] M. Spieker et al., Phys. Rev. C 97, 054319 (2018).
[2] A. Hennig et al., Nucl. Instr. Meth. A 758, 171 (2015).
[3] S. Prill et al., Phys. Rev. C 105, 034319 (2022).
[4] S. G. Pickstone et al., Nucl. Instr. Meth. A 875, 104 (2017).
Keywords: Sn; tin; lifetime measurements; CDSAM