DPG Phi
Verhandlungen
Verhandlungen
DPG

München 2019 – scientific programme

Parts | Days | Selection | Search | Updates | Downloads | Help

HK: Fachverband Physik der Hadronen und Kerne

HK 6: Nuclear Astrophysics I

HK 6.4: Talk

Monday, March 18, 2019, 15:15–15:30, HS 16

Measurement of the 3He(α,γ)7Be γ-ray angular distribution — •Steffen Turkat1, Shavkat Akhmadaliev2, Daniel Bemmerer2, Antonio Caciolli3, Marcel Grieger1,2, Sebastian Hammer1,2, Thomas Hensel1,2, Lisa Hübinger1,2, Felix Ludwig1,2, Stefan Reinicke1,2, Konrad Schmidt1, Klaus Stöckel1,2, Tamás Szücs2, Louis Wagner1,2, and Kai Zuber11Institut für Kern- und Teilchenphysik, TU Dresden — 2Helmholtz-Zentrum Dresden-Rossendorf — 3University of Padova, Italy

The improved precision regarding abundance determinations of Big Bang nuclides as well as an increased sensitivity for measuring solar neutrinos call for more precise nuclear data to improve the models. Therefore the 3He(α,γ)7Be reaction is being studied at the 3MV Tandetron accelerator at Helmholtz-Zentrum Dresden-Rossendorf, with a focus on the measurement of the γ-ray angular distribution at E ≈ 1 MeV.
This reaction affects the nucleosynthesis of 7Li as well as the predicted solar 7Be and 8B neutrino fluxes. A measurement of the angular distribution of the prompt γ-rays may enable a better comparison between precise experimental data sets at E = 0.7 - 1.3 MeV and a unique data set from the LUNA collaboration at E = 0.09 MeV - 0.13 MeV.
The activated 7Be samples are counted at the new Felsenkeller underground facility in Dresden, where a HPGe detector with a relative detection efficiency of 150% was recently installed. The results of the first campaign will be summarized. — Supported by DFG (ZU 123/21-1 and BE 4100/4-1) and the Konrad-Adenauer-Stiftung.

100% | Mobile Layout | Deutsche Version | Contact/Imprint/Privacy
DPG-Physik > DPG-Verhandlungen > 2019 > München