SMuK 2023 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 8: Nuclear Astrophysics I

HK 8.2: Vortrag

Montag, 20. März 2023, 17:00–17:15, SCH/A419

New Cross Section Data for Radiative Proton Capture on Carbon for Nuclear Astrophysics at LUNA — •Axel Boeltzig¹ and Jakub Skowronski² for the LUNA collaboration — ¹Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany — ²Università degli Studi di Padova and INFN Sezione di Padova, Padua, Italy

The observable ratio of ¹²C/¹³C can be used as a probe for stellar nucleosynthesis as well as for mixing processes during hydrogen burning, provided that the reaction rates of ¹²C(p,γ)¹³N and ¹³C(p,γ)¹⁴N are known. To obtain direct cross section measurements at low energies, which are required to better constrain these rates in astrophysical scenarios, both reactions were studied in a series of experiments at the LUNA-400 accelerator. Different targets and complementary detector setups were employed for a systematic study, and the sensitivity afforded by the low-background underground environment allowed for precise measurements at lower energies than previously available. We will present these experiments and their results for both reactions.