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HK: Fachverband Physik der Hadronen und Kerne

HK 52: Poster

HK 52.18: Poster

Donnerstag, 1. März 2018, 16:30–18:45, Audimax Foyer

Lifetime Measurements at SONIC@HORUS: The Doppler-shift attenuation method using pγ coincidences — •Vera Vielmetter¹, Anna Bohn¹, Michelle Färber¹, Pavel Petkov^1,2,3, Simon G. Pickstone¹, Sarah Prill¹, Mark Spieker^1,4, Michael Weinert¹, and Andreas Zilges¹ — ¹Institute for Nuclear Physics, University of Cologne — ²INRNE, Bulgarian Academy of Sciences, Sofia — ³National Institute for Physics and Nuclear Engineering, Bucharest-Magurele — ⁴NSCL, Michigan State University, MI 48824, USA

Recently, the Doppler-shift attenuation method (DSAM) using pγ coincidences has been established in Cologne as a new technique for measuring lifetimes of excited states in the range of femtoseconds [1]. The SONIC@HORUS setup [2] with 14 HPGe detectors and several silicon detectors is used to extract the centroid energy shifts from proton-gated γ-ray spectra, yielding lifetime values that are independent of feeding contributions. In this poster the (p,p’γ) DSAM technique will be introduced and results of several experiments, such as ⁹⁶Ru [1], ⁹⁸Ru, ^112,114Sn, ⁹⁴Zr and ^128,130Te, will be shown.

Supported by the DFG (ZI-510/7-1). JW is supported by the Bonn-Cologne Graduate School for Physics and Astronomy.
A. Hennig et al., Nucl. Instr. and Meth. A 794 (2015) 717
S.G. Pickstone et al., Nucl. Instr. and Meth. A 875 (2017) 104-110