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HK: Fachverband Physik der Hadronen und Kerne
HK 10: Structure and Dynamics of Nuclei II
HK 10.3: Talk
Monday, February 26, 2018, 17:15–17:30, HZO 70
Lifetimes in 128,130Te extracted via the Doppler-shift attenuation method using pγ coincidences — •Sarah Prill1, Anna Bohn1, Michelle Färber1, Pavel Petkov1,2,3, Simon G. Pickstone1, Mark Spieker1,4, Vera Vielmetter1, Michael Weinert1, and Andreas Zilges1 — 1Institute for Nuclear Physics, University of Cologne, Cologne — 2INRNE, Bulgarian Academy of Sciences, Sofia, Bulgaria — 3National Institute for Physics and Nuclear Engineering, Bucharest, Romania — 4NSCL, Michigan State University, MI 48824, USA
To study the E2 strength around the semi-magic Sn isotopes, existing data for the Te isotopes were compiled. Since the information on level lifetimes in 128Te and 130Te is scarce, two pγ-coincidence experiments were performed using the Doppler-shift attenuation method (DSAM) [1] at the SONIC@HORUS setup in Cologne [2]. Nuclear-level lifetimes were extracted and feeding contributions could be excluded by particle energy gates in the spectra from the new version of the silicon detector array SONIC. By determining γ-decay branching ratios and B(E2) transition strengths, systematics in the Te isotopes were examined. This contribution will present the experimental setup as well as preliminary results and discuss the systematics in the Te isotopes.
Supported by the DFG (ZI-510/7-1).
A. Hennig et al., Nucl. Instr. and Meth. A 794 (2015) 171-176
S.G. Pickstone et al., Nucl. Instr. and Meth. A 875 (2017) 104-110