深亚垒能下的$\bf ^{12}{C} + {}^{16}{O}$分子共振
$\bf ^{12}{C} + {}^{16}{O}$ molecular resonances at deep sub-barrier energy
摘要：
在Ia型超新星和重星中，亚垒能区$^{12}{\rm C} + {}^{16}{\rm O}$分子共振的存在对$^{12}{\rm C} + {}^{16}{\rm O}$聚变反应速率有着重要的影响，因此一直是核天体物理学中的一个重要问题。然而，实验测量被限制在4~MeV，并且由于非常小的聚变截面而不能访问深亚势垒能量。在这里，我们预测了一对夫妇的共振与$J^π=0^+$，$2^+$，$4^+$在深亚势垒能量的反对称化的分子动力学计算的基础上，再现已知的共振和低的频谱$^{28}{\rm Si}$。
英文摘要：
The existence of $^{12}{\rm C} + {}^{16}{\rm O}$ molecular resonances at sub-barrier energy has been a significant problem in nuclear astrophysics because they strongly affect the $^{12}{\rm C} + {}^{16}{\rm O}$ fusion reaction rate in type Ia supernovae and heavy stars. However, experimental surveys have been limited to 4~MeV and cannot access the deep sub-barrier energy due to a very small fusion cross section. Here we predict a couple of resonances with $J^π=0^+$, $2^+$, and $4^+$ in the deep sub-barrier energy based on the antisymmetrized molecular dynamics calculation that reproduces the known resonances and low-lying spectrum of $^{28}{\rm Si}$.
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