Cross sections and thermonuclear reaction rates for the Si-28(alpha,p)P-31 and Fe-54(alpha,p)Co-57 reactions

Details Cross sections and thermonuclear reaction rates for the Si-28(alpha,p)P-31 and Fe-54(alpha,p)Co-57 reactions Cross sections and thermonuclear reaction rates for the Si-28(alpha,p)P-31 and Fe-54(alpha,p)Co-57 reactions

Feb 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984cajph..62..134b&link_type=abstract

Canadian Journal of Physics (ISSN 0008-4204), vol. 62, Feb. 1984, p. 134-140. Research supported by the Natural Sciences and Eng

Astronomy and Astrophysics

Astrophysics

5

Astrophysics, Nuclear Chemistry, Thermonuclear Reactions, Transmutation, Cobalt, Cross Sections, Iron, Phosphorus, Reaction Kinetics, Silicon, Stellar Evolution

Scientific paper

The cross sections are measured for laboratory bombarding energies over the range 5.52-12.00 MeV; the targets here have a thickness of approximately 4 keV. Ground state reaction rates are then deduced from these cross sections and stellar rates are deduced by multiplying by the ratio of stellar-to-ground state rates obtained from statistical model calculations. Stellar rates for the reverse reactions are determined and are fitted by a parametric equation for ease of interpolation. The experimental cross sections and rates are compared with the statistical model calculations. They are found to be in reasonable agreement for the Fe-54(alpha, p)Co-57 reaction; for the Si-28(alpha, p)P-31 reaction, they deviate by as much as a factor of three.

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