Bonn 2010 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 19: Nukleare Astrophysik I

HK 19.4: Vortrag

Dienstag, 16. März 2010, 15:15–15:30, HG VI

Updated ¹⁴N(p,γ)¹⁵O data from LUNA — •Michele Marta¹, Daniel Bemmerer¹, Claus Rolfs², Frank Strieder², and Hanns-Peter Trautvetter² — ¹Forschungszentrum Dresden-Rossendorf, Dresden, Germany — ²Institut für Experimentalphysik III, Ruhr-Universität Bochum, Bochum, Germany

The ¹⁴N(p,γ)¹⁵O reaction controls the rate of the hydrogen burning CNO cycle. By detecting solar CNO neutrinos (e.g. in Borexino, SNO+) one can in principle measure directly the carbon and nitrogen abundance at the center of the Sun. However this requires more precise nuclear data. Updated experimental results on capture to various excited states (as well as to the ground state) in ¹⁵O are shown, together with improved branching ratios obtained for the E_p = 278 keV resonance.