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HK: Fachverband Physik der Hadronen und Kerne

HK 37: Nuclear Astrophysics III

HK 37.2: Talk

Wednesday, March 13, 2024, 16:15–16:30, HBR 14: HS 1

Target tests for ¹²C + ¹²C fusion studies underground — •Annika Willer^1,2, Daniel Bemmerer¹, Axel Boeltzig¹, Federico Ferraro³, Matthias Junker³, Eliana Masha¹, Denise Piatti⁴, Konrad Schmidt¹, Steffen Turkat², Anup Yadav^1,2, and Kai Zuber² — ¹Helmholtz-Zentrum Dresden-Rossendorf (HZDR) — ²TU Dresden — ³INFN Laboratori Nazionali del Gran Sasso, Italy — ⁴Università degli studi di Padova and INFN Sezione di Padova, Italy

The ¹²C(¹²C,p)²³Na and ¹²C(¹²C,α)²⁰Ne fusion reactions play an important role in explosive carbon burning, including in cosmologically important supernovae of type Ia. The cross section of these reactions is poorly constrained at energies of astrophysical interest. Their precise measurement is a major aim of the LUNA-MV 3.5 MV underground accelerator in Gran Sasso, Italy that was officially opened for scientific use in 2023. Here, we report on data from a test irradiation carried out at the Felsenkeller 5 MV underground ion accelerator in Dresden. We test the stability of solid carbon targets under intensive carbon ion beam in a dedicated, watercooled setup and check for beam-induced γ-ray background.