Mass measurements in the vicinity of the rp-process and the nu p-process paths with JYFLTRAP and SHIPTRAP

Abstract

The masses of very neutron-deficient nuclides close to the astrophysical rp- and nu p-process paths have been determined with the Penning trap facilities JYFLTRAP at JYFL/Jyväskylä and SHIPTRAP at GSI/Darmstadt. Isotopes from yttrium (Z = 39) to palladium (Z = 46) have been produced in heavy-ion fusion-evaporation reactions. In total 21 nuclides were studied and almost half of the mass values were experimentally determined for the first time: 88Tc, 90-92Ru, 92-94Rh, and 94,95Pd. For the 95Pdm, (21/2^+) high-spin state, a first direct mass determination was performed. Relative mass uncertainties of typically $\delta m/m=5\times 10^{-8}$ were obtained. The impact of the new mass values has been studied in nu p-process nucleosynthesis calculations. The resulting reaction flow and the final abundances are compared to those obtained with the data of the Atomic Mass Evaluation 2003.

arXiv comment21 pages, 12 figures, 2 tables, submitted to Phys. Rev. C

References in corpus (17)

• Astrophysical Reaction Rates From Statistical Model Calculations
• Neutrino-induced nucleosynthesis of A>64 nuclei: The nu p-process
• The endpoint of the rp process on accreting neutron stars
• Two-dimensional hydrodynamic core-collapse supernova simulations with spectral neutrino transport. I. Numerical method and results for a 15 M_sun star
• Probing the gravitational well: No supernova explosion in spherical symmetry with general relativistic Boltzmann neutrino transport
• A linear radiofrequency ion trap for accumulation, bunching, and emittance improvement of radioactive ion beams
• Nucleosynthesis in Early Supernova Winds II: The Role of Neutrinos
• An improved calculation of the isospin-symmetry-breaking corrections to superallowed Fermi beta decay
• Viscosity and Rotation in Core-Collapse Supernovae
• The rp-Process in Neutrino-driven Winds
• Evolution of the N=50 shell gap energy towards ${}^{78}$Ni
• Proton Drip-Line Calculations and the Rp-process
• The importance of nuclear masses in the astrophysical rp-process
• Q_EC values of the Superallowed beta Emitters 50Mn and 54Co
• Precise atomic masses of neutron-rich Br and Rb nuclei close to the r-process path
• The Mechanism of Core-Collapse Supernovae and the Ejection of Heavy Elements
• Mass Measurements and Implications for the Energy of the High-Spin Isomer in 94Ag

Cited by in corpus (24)

• Precision Atomic Physics Techniques for Nuclear Physics with Radioactive Beams
• Uncertainties in the nu p-process: supernova dynamics versus nuclear physics
• Penning traps as a versatile tool for precise experiments in fundamental physics
• Nucleosynthesis in Type I X-ray Bursts
• PENTATRAP: A novel cryogenic multi-Penning trap experiment for high-precision mass measurements on highly charged ions
• Neutrino-nucleus reactions and their role for supernova dynamics and nucleosynthesis
• Nuclear astrophysics: the unfinished quest for the origin of the elements
• The Impact of Uncertainties in Reaction Q-values on Nucleosynthesis in Type I X-Ray Bursts
• Precision mass measurements on neutron-rich rare-earth isotopes at JYFLTRAP - reduced neutron pairing and implications for the $r$-process calculations
• Verifying the accuracy of the TITAN Penning-trap mass spectrometer
• Dependence of X-ray Burst Models on Nuclear Masses
• Storage ring mass spectrometry for nuclear structure and astrophysics research
• Mass measurements of very neutron-deficient Mo and Tc isotopes and their impact on rp process nucleosynthesis
• Stellar weak decay rates in neutron-deficient medium-mass nuclei
• Mass measurements in the vicinity of the doubly-magic waiting point 56Ni
• Mass Measurements of Neutron-Deficient Y, Zr, and Nb Isotopes and Their Impact on $rp$ and $\nu p$ Nucleosynthesis Processes
• Uncertainties in $\nu$p-process nucleosynthesis from Monte Carlo variation of reaction rates
• On the origin of the lightest Molybdenum isotopes
• Penning trap mass measurements on (99-109)$Cd with ISOLTRAP and implications on the rp process
• Massive Stars and their Supernovae
• High-precision mass measurements of neutron deficient silver isotopes probe the robustness of the $N$ = 50 shell closure
• High-accuracy Penning trap mass measurements with stored and cooled exotic ions
• A new phenomenological formula for ground state binding energies
• Probing the quantum phase transition around $N\approx 60$ via mass measurements of technetium isotopes