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Bonn 2020 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 26: Structure and Dynamics of Nuclei V

HK 26.3: Vortrag

Mittwoch, 1. April 2020, 14:45–15:00, J-HS E

Study of 116,118Sn using the particle-γ coincidence Doppler-shift attenuation method — •Sarah Prill1, Anna Bohn1, Vera Everwyn1, Michelle Färber1, Florian Kluwig1, Pavel Petkov2,1, Philipp Scholz1, Michael Weinert1, and Andreas Zilges11Institute for Nuclear Physics, University of Cologne — 2National Institute for Physics and Nuclear Engineering, Bucharest, Romania

The tin isotopes at the nuclear shell closure Z=50 present ideal candidates to study nuclear properties and their evolution with increasing number of valence neutrons. The isotopes 112,114Sn [1] were already studied in Cologne with the Doppler-shift attenuation method (DSAM) using particle-γ coincidences [2]. Now, results on 116,118Sn were obtained with the same method to increase the knowledge on the tin isotopic chain. For this, inelastic proton and alpha scattering experiments were performed at the SONIC@HORUS setup [3] at the 10 MV FN-Tandem accelerator of the University of Cologne, yielding particle-γ coincidence data ideally suited to extract level lifetimes in the femto- to low picosecond range. This contribution will present the newest results, including nuclear level lifetimes and transition strengths.

Supported by the DFG (ZI-510/9-1). A.B. is supported by the Bonn-Cologne Graduate School for Physics and Astronomy.

[1] M. Spieker et al., Phys. Rev. C 97 (2018) 054319

[2] A. Hennig et al., Nucl. Instr. and Meth. A 794 (2015) 171

[3] S. G. Pickstone et al., Nucl. Instr. and Meth. A 875 (2017) 104

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