论文标题
23Ne的单个中子转移及其相关性的核合成X射线爆发中的核合成的相关性
Single neutron transfer on 23Ne and its relevance forthepathway ofnucleosynthesis in astrophysical X-ray bursts
论文作者
论文摘要
我们介绍了天体物理23AL（P，γ）24SI反应中共振强度的新实验测量，从而限制了X射线泡泡场景中22mg的核合成途径。具体而言，我们使用23Ne的放射性束对（D，P）反应进行了第一次测量，以探索24Ne的水平，即24Si的镜像类似物。观察到了四个强的单粒子状态，并以{\ sim} 20 {\％}的精度提取相应的中子光谱因子。使用这些光谱因素，再加上镜面的识别，我们在键{\ ell} = 0 er = 157 keV的密钥强度下的不确定性降低能量X射线汉堡事件（t> 0.85GK），显着影响能源产生和保存氢燃料。
We present new experimental measurements of resonance strengths in the astrophysical 23Al(p, γ)24Si reaction, constraining the pathway of nucleosynthesis beyond 22Mg in X-ray burster scenarios. Specifically, we have performed the first measurement of the (d, p) reaction using a radioactive beam of 23Ne to explore levels in 24Ne, the mirror analog of 24Si. Four strong single-particle states were observed and corresponding neutron spectroscopic factors were extracted with a precision of {\sim}20{\%}. Using these spectroscopic factors, together with mirror state identifications, we have reduced uncertainties in the strength of the key {\ell} = 0 resonance at Er= 157 keV, in the astrophysical 23Al(p, γ) reaction, by a factor of 4. Our results show that the 22Mg(p, γ)23Al(p, γ) pathway dominates over the competing 22Mg(α, p) reaction in all but the most energetic X-ray burster events (T>0.85GK), significantly affecting energy production and the preservation of hydrogen fuel.
