Physics
Scientific paper
Oct 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990ddtd.book.....k&link_type=abstract
Détermination de taux de réactions nucléaires conduisant à la nucléosynthèse stellaire du fluor., by Kious, M.. Paris-11 Univ.,
Physics
Scientific paper
The fluorine stellar nucleosynthesis remains up to now unexplained. According to the current nuclear rates, the fluorine synthesized during the hydrogen or the helium burning is immediatly destroyed. The author started the study of resonant levels located close by the proton threshold in neon twenty, using a proton transfer reaction. The existence of a level close to the threshold appears to be of critical importance, and he determined its spectroscopic factor and its proton width. Through interferences with higher lying levels, the cross section of the fluorine plus proton reaction could be severely modified. Concerning the fluorine building up during helium burning phases, the author considered the consequences of some new measurements of fluorine alpha widths. The consequences for the fluorine stellar nucleosynthesis are investigated.
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