Nuclear Processes at Solar Energy

Details Nuclear Processes at Solar Energy Nuclear Processes at Solar Energy

2003-08-29

arxiv.org/abs/astro-ph/0308537v1

Astronomy and Astrophysics

Astrophysics

Invited talk at the XXIII Physics in Collisions Conference (PIC03), Zeuthen, Germany, June 2003, 10 pages, LaTeX, 3 EPS figure

Scientific paper

LUNA, Laboratory for Underground Nuclear Astrophysics at Gran Sasso, is measuring fusion cross sections down to the energy of the nucleosynthesis inside stars. Outstanding results obtained up to now are the cross-section measurements within the Gamow peak of the Sun of $^{3}He(^{3}He,2p)^{4}He$ and the $D(p,\gamma)^{3}He$. The former plays a big role in the proton-proton chain, largely affecting the calculated solar neutrino luminosity, whereas the latter is the reaction that rules the proto-star life during the pre-main sequence phase. The implications of such measurements will be discussed. Preliminary results obtained last year on the study of $^{14}N(p,\gamma)^{15}O$, the slowest reaction of the CNO cycle, will also be shown.

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