Mainz 2022 – wissenschaftliches Programm

Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe

HK: Fachverband Physik der Hadronen und Kerne

HK 61: Structure and Dynamics of Nuclei X

HK 61.1: Gruppenbericht

Donnerstag, 31. März 2022, 14:00–14:30, HK-H6

DSAM lifetime measurements using particle-γ coincidences at SONIC@HORUS — •Sarah Prill, Anna Bohn, Christina Deke, Felix Heim, Michael Weinert, and Andreas Zilges — University of Cologne, Institute for Nuclear Physics, 50937 Cologne, Germany

In recent years, the (p,p’γ) Doppler-shift attenuation method (DSAM) has been successfully applied to determine lifetimes of excited low-spin states in the sub-picosecond range [1,2]. The use of particle-γ coincidence data taken at the SONIC@HORUS spectrometer in Cologne [3] gives complete knowledge of the reaction kinematics and enables the direct selection of levels via their excitation energy, thus greatly reducing background and eliminating feeding from levels of higher energies. This contribution will present the DSA method and recent results obtained from experiments on Ru, Sn [2] and Te isotopes will be shown. Additionally, a complementary approach to the conventional DSA technique will be presented which aims to extract lifetimes from weak transitions and excited states with low statistics that cannot be analysed with the established method.
Supported by the DFG (ZI-510/9-1).
[1] A. Hennig et al., Nucl. Instr. and Meth. A 794 (2015) 171.
[2] M. Spieker et al., Phys. Rev. C 97 (2018) 054319
[3] S. G. Pickstone et al., Nucl. Instr. and Meth. A 875 (2017) 104.