Proton drip-line calculations and the rp process
Proton drip-line calculations and the rp process
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DOI：
10.1103/physrevc.65.045802
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发表时间：
2002-01
影响因子：
3.1
通讯作者：
B. A. Brown;R. R. C. Clement-R.;H. Schatz;A. Volya;W. Richter
中科院分区：
文献类型：
--
作者：
B. A. Brown;R. R. C. Clement-R.;H. Schatz;A. Volya;W. Richter
本文计算了A=41-75区域丰质子核的单质子和双质子分离能。该方法是基于Skyrme Hartree-Fock计算的库仑位移能量的镜核结合实验质量的丰中子核。质子滴线和天体物理rp过程的影响进行了讨论。这是在一个详细的分析框架内的RP过程计算的灵敏度在I型X射线爆发模型上的核质量。我们发现，剩余的质量的不确定性，特别是对于一些核与$N=Z$，仍然导致大的不确定性在计算的X射线暴光变曲线。在观测到的X射线暴光变曲线可以用来获得对点火条件和中子星星性质的定量约束之前，核质量数据的进一步实验或理论改进是必要的。我们确定了一个原子核的列表，其中改进的质量数据将是最重要的。
One-proton and two-proton separation energies are calculated for proton-rich nuclei in the region $ A=41-75 $. The method is based on Skyrme Hartree-Fock calculations of Coulomb displacement energies of mirror nuclei in combination with the experimental masses of the neutron-rich nuclei. The implications for the proton drip line and the astrophysical rp-process are discussed. This is done within the framework of a detailed analysis of the sensitivity of rp process calculations in type I X-ray burst models on nuclear masses. We find that the remaining mass uncertainties, in particular for some nuclei with $N=Z$, still lead to large uncertainties in calculations of X-ray burst light curves. Further experimental or theoretical improvements of nuclear mass data are necessary before observed X-ray burst light curves can be used to obtain quantitative constraints on ignition conditions and neutron star properties. We identify a list of nuclei for which improved mass data would be most important.