Darmstadt 2016 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 11: Nuclear Astrophysics II

HK 11.4: Vortrag

Montag, 14. März 2016, 17:30–17:45, S1/01 A02

Nuclear resonance fluorescence on ⁸⁷Rb* — •Benjamin Brückner¹, Jan Glorius^1,2, René Reifarth¹, Kerstin Sonnabend¹, Deniz Savran², Johann Isaak², and Ronald Schwengner³ — ¹Goethe Universität Frankfurt am Main, 60438 Frankfurt am Main, Germany — ²GSI Helmholtzzentrum für Schwerionenforschung, 64291 Darmstadt, Germany — ³Helmholtz-Zentrum Dresden-Rossendorf, 01328 Dresden, Germany

The aim of the nuclear resonance fluorescence (NRF) investigation of ⁸⁷Rb is the determination of the γ-strength function. For the astrophysical s-process, the γ-strength function of this specific nucleus can be used to calculate the cross section of neutron capture on the branching point nucleus ⁸⁶Rb. This branching point together with ⁸⁵Kr determines the abundance ratio of strontium isotopes, which could be used to probe stellar models. As one part of the ⁸⁷Rb campaign, an NRF experiment on ⁸⁷Rb has been carried out using bremsstrahlung at 13.2 MeV at ELBE@HZDR. An overview of the experimental setup as well as of the preliminary results will be given. *supported by DFG(SO907/2-1)