Astronomy and Astrophysics – Astrophysics
Scientific paper
Jul 1981
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981svphu.134..431c&link_type=abstract
(Uspekhi Fizicheskikh Nauk, vol. 134, July 1981, p. 431-467.) Soviet Physics - Uspekhi, vol. 24, July 1981, p. 566-584. Transla
Astronomy and Astrophysics
Astrophysics
Absorption Cross Sections, Branching (Physics), Neutron Cross Sections, Nuclear Fusion, Nuclides, Series Expansion, Stellar Evolution, Astrophysics, Chemical Composition, Neutron Flux Density, Stellar Mass Ejection, Temperature Dependence, Thermodynamics
Scientific paper
The exact solution of the s-process equations obtained by Newman (1978) is discussed. The solution can be written in the form of the Batemen series expansion, confirms the initial s-process theory, and permits calculation of the yields of elements to be carried out more correctly in the region of low neutron exposures. The influence of branching of the s-process due to competition between beta decay and neutron capture is analyzed, and it is noted that at a temperature of 3 x 10 to the 8th K and a density of free neutrons of 1.6 x 10 to the 7th/cu cm, the s-process theory is in good agreement with observational data for the yields of the various nuclides. Models for the pulsed neutron s-process are discussed.
Chechev Valerii P.
Kramarovskii Ia. M.
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