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Title:
Stellar rates for the Mg-24/alpha, n/Si-27, Mg-25/p, n/Al-25, Al-27/p, n/Si-27, and Si-28/alpha, n/S-31 reactions
Authors:
Cheng, C. W.; King, J. D.
Affiliation:
AA(Scarborough College, West Hill, Ontario, Canada), AB(Toronto, University, Toronto, Canada)
Publication:
Astrophysical Journal, Part 1, vol. 241, Oct. 15, 1980, p. 844-847. Research supported by the Natural Sciences and Engineering Research Council of Canada. (ApJ Homepage)
Publication Date:
10/1980
Category:
Astrophysics
Origin:
STI
NASA/STI Keywords:
Aluminum Isotopes, Magnesium Isotopes, Reaction Kinetics, Silicon Isotopes, Stars, Sulfur Isotopes, Thermonuclear Reactions, Astrophysics, Cross Sections, Tables (Data)
DOI:
10.1086/158396
Bibliographic Code:
1980ApJ...241..844C

Abstract

Ground-state reaction rates have been deduced from recent cross section measurements for the endoergic Mg-24(alpha, n)Si-27, Mg-25(p, n)Al-25, Al-27(p, n)Si-27 and Si-28(alpha, n)S-31 reactions, supplemented by an extrapolation from the first experimental point to threshold using the statistical model predictions of Woosley et al. (1975, 1978). These rates are in very good agreement with those calculated from the statistical model. Stellar rates have been derived from the ground-state rates by multiplying by the ratio of stellar to ground-state rates given by the statistical model. Both ground-state and stellar rates have been represented by analytic functions of the temperature.

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