Letter to the Editor
The synthesis of the light Mo and Ru isotopes: how now, no need for an exotic solution?
V. Costa 1,2,3,
M. Rayet 3,
R.A. Zappalà 1 and
M. Arnould 3
Received 27 March 2000 / Accepted 19 May 2000
The most detailed calculations of the p-process call for its development in the O/Ne layers of Type II supernovae. In spite of their overall success in reproducing the solar system content of p-nuclides, they suggest a significant underproduction of the light Mo and Ru isotopes. On grounds of a model for the explosion of a 25 star with solar metallicity, we demonstrate that this failure might just be related to the uncertainties left in the rate of the neutron producing reaction. The latter indeed have a direct impact on the distribution of the s-process seeds for the p-process.
Key words: nuclear reactions, nucleosynthesis, abundances stars: abundances stars: supernovae: general solar system: general
© European Southern Observatory (ESO) 2000
Online publication: June 20, 2000