论文标题

评估$^{44} $ ti($α$,p)$^{47} $ v反应横截面与Supernovae相关的$^{44}的实验约束评估

Evaluation of Experimental Constraints on the $^{44}$Ti($α$,p)$^{47}$V Reaction Cross Section Relevant for Supernovae

论文作者

Chipps, Kelly A., Adsley, Philip, Couder, Manoel, Hix, W. Raphael, Meisel, Zachary, Schmidt, Konrad

论文摘要

由于它是在核心偏离超新星(CCSNE)中可观察到的天文学的重要性,因此必须限制产生和破坏$^{44} $ ti的反应。通常,当实验横截面不可用时,使用统计模型计算,例如Hauser-Feshbach,但是这种采用速率的变化可能很大。在此,将来自文献的数据与$^{44} $ ti($α$,p)$^{47} $ v反应横截面的统计模型计算进行了比较,并用于限制与CCSNE相关的温度中可能的反应速率变化。给出了针对未来测量的建议。

Due to its importance as an astronomical observable in core-collapse supernovae (CCSNe), the reactions producing and destroying $^{44}$Ti must be well constrained. Generally, statistical model calculations such as Hauser-Feshbach are employed when experimental cross sections are not available, but the variation in such adopted rates can be large. Here, data from the literature is compared with statistical model calculations of the $^{44}$Ti($α$,p)$^{47}$V reaction cross section and used to constrain the possible reaction rate variation over the temperatures relevant to CCSNe. Suggestions for targeted future measurements are given.

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