Bonn 2010 – wissenschaftliches Programm
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 Ep = 278 keV resonance.