Astronomy and Astrophysics – Astrophysics
Scientific paper
Dec 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990stin...9119983g&link_type=abstract
Presented at the 7th International Symposium on Capture Gamma-Ray Spectroscopy and Related Topics, Pacific Grove, 14-19 Oct. 199
Astronomy and Astrophysics
Astrophysics
Astrophysics, Charged Particles, Gamma Rays, Neutrons, Photonuclear Reactions, Reaction Kinetics, Stellar Activity, Alpha Particles, Europium Isotopes, Promethium Isotopes, Stellar Evolution
Scientific paper
P-Process modeling of some rare but stable proton-rich nuclei requires knowledge of a variety of neutron, charged particle, and photonuclear reaction rates at temperatures of 2 to 3 x 109 K. Detailed balance is usually invoked to obtain the stellar photonuclear rates, in spite of a number of well-known constraints. We attempt to calculate directly the stellar rates for (gamma ,n) and (gamma, alpha) reactions on Eu-151. These are compared with stellar rates obtained from detailed balance, using the same input parameters for the stellar (n, gamma) and (alpha, gamma) reactions on Eu-150 and Pm-147, respectively. The two methods yielded somewhat different results, which will be discussed along with some sensitivity studies.
Gardner Adrian M.
Gardner D. G.
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