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PRINCIPLE OF UNIVERSALITY OF γ-PROCESS NUCLEOSYNTHESIS IN CORE-COLLAPSE SUPERNOVA EXPLOSIONS

机译:核塌陷超新星爆炸过程中γ过程核合成的通用性原理

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摘要

Using core-collapse supernova explosion models, we investigate the principle of the universality of the γ-process, according to which the s/p abundance ratios produced by individual nucleosynthesis episode are almost constant over a wide range of atomic number. The universality originates from the shift of the γ-process layers, the independence of the s/p abundance ratios of the nuclear reactions, and the weak s-process in presupernovae. Our calculations further suggest an extended universality in which the s/p ratios in the γ-process layers are not only constant but also centered around a specific value of 3. To verify this, we propose an astronomical observation of indium isotopic abundance fractions.
机译:使用核塌陷超新星爆炸模型,我们研究了γ过程普遍性的原理,根据该原理,单个核合成过程产生的s / p丰度比在很宽的原子数范围内几乎恒定。普遍性源于γ过程层的移动,核反应的s / p丰度比的独立性以及超新星中的弱s过程。我们的计算进一步表明了扩展的通用性,其中γ工艺层中的s / p比不仅恒定,而且围绕3的特定值。为验证这一点,我们提出了铟同位素丰度分数的天文观测。

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