The importance of nuclear masses in the astrophysical rp-process

Abstract

The importance of mass measurements for astrophysical capture processes in general, and for the rp-process in X-ray bursts in particular is discussed. A review of the current uncertainties in the effective lifetimes of the major waiting points 64Ge, 68Se, and 72Kr demonstrates that despite of recent measurements uncertainties are still significant. It is found that mass measurements with an accuracy of the order of 10 keV or better are desirable, and that reaction rate uncertainties play a critical role as well.

14 pages, 4 figures, to appear in International Journal of Mass Spectroscopy

References in corpus (4)

• Composition of the Innermost Core Collapse Supernova Ejecta
• Nucleosynthesis in the Hot Convective Bubble in Core-Collapse Supernovae
• Superburst Ignition and Implications for Neutron Star Interiors
• New ${}^{32}$Cl(p,$\gamma$)${}^{33}$Ar reaction rate for astrophysical rp-process calculations

Cited by in corpus (24)

• Dependence of X-Ray Burst Models on Nuclear Reaction Rates
• Mass measurements in the vicinity of the rp-process and the nu p-process paths with JYFLTRAP and SHIPTRAP
• Nucleosynthesis in Type I X-ray Bursts
• Evidence for a breakdown of the Isobaric Multiplet Mass Equation: A study of the A=35, T=3/2 isospin quartet
• Constraints on neutron star mass and radius in GS 1826-24 from sub-Eddington X-ray bursts
• Dependence of X-ray Burst Models on Nuclear Masses
• Mass measurements of very neutron-deficient Mo and Tc isotopes and their impact on rp process nucleosynthesis
• Elucidation of the anomalous A = 9 isospin quartet behaviour
• A novel ion cooling trap for multi-reflection time-of-flight mass spectrograph
• Penning trap mass measurements on (99-109)$Cd with ISOLTRAP and implications on the rp process
• High-precision mass measurement of ${}^{56}$Cu and the redirection of the rp-process flow
• Atomic masses of intermediate-mass neutron-deficient nuclei with relative uncertainty down to 35-ppb via multireflection time-of-flight mass spectrograph
• Reaction rates of ${}^{64}$Ge($p,\gamma$)${}^{65}$As and ${}^{65}$As($p,\gamma$)${}^{66}$Se and the extent of nucleosynthesis in type I X-ray bursts
• Microscopic calculation of proton capture reactions in mass 60-80 region and its astrophysical implications
• Low energy proton reactions of astrophysical interest in A$\sim 90-100$ region
• Shape evolutions of ${}^{72,74}$Kr with temperature in the covariant density functional theory
• Development of a low-energy radioactive ion beam facility for the MARA separator
• Capture reactions into borromean two-proton systems at rp-waiting points
• Mapping the frontiers of the nuclear mass surface
• Microscopic Study of (p,$\gamma$) Reactions in Mass Region A=110-125
• Importance of Q-values in astrophysical rp-proces
• Two-proton capture on the ${}^{68}$Se nucleus with a new self-consistent cluster model
• Radiative proton capture cross sections in the mass range $40-55$
• Improved thermonuclear rate of ${}^{42}$Ti($p$,$\gamma$)${}^{43}$V and its astrophysical implication in rp-process