Mainz 2022 – scientific programme

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

HK: Fachverband Physik der Hadronen und Kerne

HK 11: Nuclear Astrophysics I

HK 11.4: Talk

Monday, March 28, 2022, 15:00–15:15, HK-H10

Investigation of the 3He(α,γ)7Be reaction at the Felsenkeller shallow underground facility — •Steffen Turkat¹, Daniel Bemmerer², Axel Boeltzig², Fabia Dietrich², Armin Freimann², Thomas Hensel¹, Jonas Koch², Till Lossin², Felix Ludwig², Jannis Michaelis², Max Osswald², Simon Rümmler², Konrad Schmidt², Julian Schwengfelder², and Kai Zuber¹ — ¹Institut für Kern- und Teilchenphysik, TU Dresden, Dresden, Germany — ²Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany

The ³He(α,γ)⁷Be reaction plays a significant role in Big Bang nucleosynthesis, as well as in solar fusion processes. It affects the predicted solar ⁷Be and ⁸B neutrino fluxes as well as the nucleosynthesis of primordial ⁷Li.
A measurement of the γ-ray angular distribution is currently underway in order to enable a better comparison between several 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. A setup using 21 HPGe detectors and implanted 3He targets is used at the 5 MV Felsenkeller underground accelerator. In addition to the angular distribution study, the activated samples are counted offline. First results of this ongoing campaign will be summarized. - Supported by DFG (ZU123/21-1)
The use of GAMMAPOOL resources is gratefully acknowledged.