Köln 2025 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 12: Nuclear Astrophysics II

HK 12.2: Vortrag

Montag, 10. März 2025, 17:15–17:30, SR 0.03 Erw. Physik

Exploring CNO Cycle Reactions at the Felsenkeller Underground Accelerator Laboratory — •Axel Boeltzig¹, Daniel Bemmerer¹, Eliana Masha¹, Denise Piatti², Konrad Schmidt¹, Jakub Skowronski², Anup Yadav^1,3, Peter Hempel^1,3, and Kai Zuber³ — ¹Helmholtz-Zentrum Dresden-Rossendorf, Germany — ²Università degli Studi di Padova and INFN Sezione di Padova, Italy — ³Technische Universität Dresden, Germany

Nuclear reactions in the Carbon-Nitrogen-Oxygen (CNO) cycles are active during the hydrogen burning phase of stars at elevated stellar temperatures. With increasing temperature, the reaction networks extend to fluorine, and breakout reactions from the catalytic cycles move into focus as pathways for the synthesis of neon and heavier elements in stars.

At the Felsenkeller shallow-underground laboratory, jointly operated by HZDR and TU Dresden, a 5 MV Pelletron accelerator is dedicated to sensitive nuclear astrophysics studies in a laboratory with 45 m of rock shielding against cosmic radiation. The CNO cycle reactions ^12,13C(p,γ)^13,14N were recently studied at this laboratory, and an investigation of the breakout reaction ¹⁹F(p,γ)²⁰Ne is being planned. We will present on the status and plans for these measurements, and the future potential at the Felsenkeller Laboratory to explore the CNO cycle reactions.

Keywords: CNO Cycle; Ion Beam Accelerator; Underground Laboratory; Gamma-Ray Spectroscopy