München 2019 – wissenschaftliches Programm
HK 36.1: Gruppenbericht
Mittwoch, 20. März 2019, 14:00–14:30, HS 14
Investigation of the dipole response in atomic nuclei in different mass regions using photon scattering experiments — •J. Wilhelmy1, P. Erbacher2, J. Isaak3, B. Löher4, M. Müscher1, D. Savran4, P. Scholz1, R. Schwengner5, M. Spieker6, W. Tornow7, and A. Zilges1 — 1University of Cologne, Institute for Nuclear Physics — 2Goethe University of Frankfurt — 3Institute for Nuclear Physics, TU Darmstadt — 4GSI, Darmstadt — 5HZDR, Dresden-Rossendorf — 6NSCL, Michigan State University, USA — 7Department of Physics, Duke University, USA
The nuclear γ-ray strength function (γ-SF) has great impact on reaction rates within nuclear synthesis processes. Level lifetimes, γ-decay branching ratios and parity quantum numbers of excited J=1 states are extracted from high-resolution photon scattering experiments in a model-independent way. Results of complementary measurements with continuous photon flux distributions (at the bremsstrahlung facilities DHIPS  and γELBE ) and quasi-monoenergetic beams (at HIγS ) for nuclei in several mass regions will be presented and discussed within their systematics .
Supported by the BMBF (05P15PKEN9).
K. Sonnabend et al., NIM A 640 (2011) 6-12
R. Schwengner et al., NIM A 555 (2005) 211
B. Löher et al., NIM A 723 (2013) 136
J. Wilhelmy et al., Phys. Rev. C 98 (2018) 034315