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Proton Drip-Line Calculations and the Rp-process

B. A. Brown·R. R. C. Clement·W. A. Richter·H. Schatz·A. Volya
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Abstract

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.

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B. A. Brown, R. R. C. Clement, W. A. Richter, H. Schatz, A. Volya. 2002-01-20. Proton Drip-Line Calculations and the Rp-process. https://doi.org/10.1103/physrevc.65.045802

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