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ASTROPHYSICAL REACTION RATE OF ~(12)C(α, γ)~(16)O

机译:〜(12)C(α,γ)〜(16)O的天体物理反应速率

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摘要

A new astrophysical reaction rate of ~(12)C(α, γ)~(16)O has been calculated based on our recent determination of the E1- and E2-capture cross sections. The R-matrix method has been applied to describe the S_(E1)- and S_(E2)-factor functions as well as the data of elastic α scattering and the β-delayed α decay of ~(16)N from other experiments. The resulting reaction rate for stellar temperatures of T_9 = 0.04-10 is presented in both tabular form and an analytic expression. A new temperature dependence of the reaction rate was obtained when compared with reported evaluations. The associated uncertainties were reduced considerably in comparison to previous determinations.
机译:根据我们最近对E1和E2捕获截面的确定,已经计算出〜(12)C(α,γ)〜(16)O的新的天体物理反应速率。 R矩阵方法已被用于描述S_(E1)-和S_(E2)因子函数,以及来自其他实验的弹性α散射数据和〜(16)N的β延迟α衰减数据。表格温度和解析表达式均表示了T_9 = 0.04-10的恒星温度的反应速率。与报道的评价相比,获得了反应速率的新的温度依赖性。与先前的确定相比,相关的不确定性大大降低了。

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