NEW ASTROPHYSICAL REACTION RATE FOR THE 12 C( α , γ ) 16 O REACTION
نویسندگان
چکیده
منابع مشابه
White Dwarf Seismology and the 12 C(α,γ) 16 O Rate
Recent determinations of the internal composition and structure of two helium-atmosphere variable white dwarf stars, GD 358 and CBS 114, have led to conflicting implied rates for the C(α, γ)O reaction. If we assume that both stars were formed through single-star evolution, then the initial analyses of their pulsation frequencies must have differed in some systematic way. I present improved fits...
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Angular distribution of the 12C(7Li,6He)13N reaction at E(7Li) = 44.0 MeV was measured at the HI-13 tandem accelerator of Beijing, China. Asymptotic normalization coefficient (ANC) of 13N → 12C + p was derived to be 1.64 ± 0.11 fm−1/2 through distorted wave Born approximation (DWBA) analysis. The ANC was then used to deduce the astrophysical S(E) factors and reaction rates for direct capture in...
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We have studied the sensitivity of s-process nucleosynthesis in massive stars to ±2σ variations in the rates of the triple-α and C(α, γ)O reactions. We simulated the evolution of massive stars from H-burning through Fe-core collapse, followed by a supernova explosion. We found that: the production factors of s-process nuclides between Fe and Zr change strongly with changes in the He burning rea...
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ژورنال
عنوان ژورنال: The Astrophysical Journal
سال: 2016
ISSN: 2041-8213
DOI: 10.3847/2041-8205/817/1/l5