Detailed illustration of the accuracy of currently used nuclear-mass models

Sobiczewski, A.; Litvinov, Yu. A.; Palczewski, M.

doi:10.1016/j.adt.2017.05.001

Cited by 33 publications

(11 citation statements)

References 53 publications

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“…3 shows that the new experimental S α data can be well described by the latest version of FRDM ′ 12 [49] and WS4 [50] mass models. The latter has been found to be the most accurate model in various mass regions [51,52]. We note, that the extrapolated S α ( 84 Mo) agrees well with the prediction by the WS4 model.…”

Section: Rp-processsupporting

confidence: 79%

Mass Measurements of Neutron-Deficient Y, Zr, and Nb Isotopes and Their Impact on $rp$ and $νp$ Nucleosynthesis Processes

Xing,

Li,

Zhang

et al. 2018

Preprint

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Using isochronous mass spectrometry at the experimental storage ring CSRe in Lanzhou, the masses of 82 Zr and 84 Nb were measured for the first time with an uncertainty of ∼ 10 keV, and the masses of 79 Y, 81 Zr, and 83 Nb were re-determined with a higher precision. The latter are significantly less bound than their literature values. Our new and accurate masses remove the irregularities of the mass surface in this region of the nuclear chart. Our results do not support the predicted island of pronounced low α separation energies for neutron-deficient Mo and Tc isotopes, making the formation of Zr-Nb cycle in the rp-process unlikely. The new proton separation energy of 83 Nb was determined to be 490(400) keV smaller than that in the Atomic Mass Evaluation 2012. This partly removes the overproduction of the p-nucleus 84 Sr relative to the neutron-deficient molybdenum isotopes in the previous νp-process simulations.

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Section: Rp-processsupporting

confidence: 79%

Mass Measurements of Neutron-Deficient Y, Zr, and Nb Isotopes and Their Impact on $rp$ and $νp$ Nucleosynthesis Processes

Xing,

Li,

Zhang

et al. 2018

Preprint

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“…Thus, the neutron dripline in the medium and heavy mass regions is located many dozens neutron numbers away off the valley of β-stability and with high certainty will not be experimentally reached in the next several decades. Presently the only possibility to get a clue about an approximate location of the neutron dripline is the consideration of the trend of the neutron separation energies calculated for all nuclides with measured masses and the extrapolation of this trend to S n =0 employing various mass formulas (Sobiczewski et al 2018). In this approach high-precision mass measurements with a few 10 keV/c 2 uncertainty on all experimentally reachable nuclides become mandatory.…”

Section: Mass Spectrometry On Radioactive Ions Nuclear Structure Studiesmentioning

confidence: 99%

Masses of Exotic Nuclei

Blaum¹,

Eliseev²,

Goriely³

2022

Handbook of Nuclear Physics

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Masses of exotic nuclei play a key role in multiple physics applications ranging from nuclear structure studies and input to astrophysical modeling to tests of the electroweak standard model, quantum electrodynamics, and neutrino physics. The nowadays most prominent mass spectrometry techniques rely on the storage and cooling of charged particles in multi-reflection time-of-flight, Penning-trap, and storage ring devices and the measurement of the revolution frequency of the ion of interest to a reference ion. We provide a comprehensive overview of these measurement techniques as well as the status of the most important K. Blaum ( ) • S.

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“…[27,16]. Different nuclear mass models vary in their success in describing experimentally known nuclear masses [28]. Hence, a comprehensive study of the sensitivity of r-process nucleosynthesis to individual nuclear masses was carried out in Refs.…”

Section: Theoretical Nuclear Massesmentioning

confidence: 99%

Current Status of r-Process Nucleosynthesis

Kajino,

Aoki,

Balantekin

et al. 2019

Preprint

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The rapid neutron capture process (r-process) is believed to be responsible for about half of the production of the elements heavier than iron and contributes to abundances of some lighter nuclides as well. A universal pattern of r-process element abundances is observed in some metal-poor stars of the Galactic halo. This suggests that a well-regulated combination of astrophysical conditions and nuclear physics conspires to produce such a universal abundance pattern. The search for the astrophysical site for r-process nucleosynthesis has stimulated interdisciplinary research for more than six decades. There is currently much enthusiasm surrounding evidence for r-process nucleosynthesis in binary neutron star mergers in the multiwavelength follow-up observations of kilonova/gravitational-wave GRB170807A/GW170817. Nevertheless, there remain questions as to the contribution over the history of the Galaxy to the current solar-system r-process abundances from other sites such as neutrino-driven winds or magnetohydrodynamical ejection of material from core-collapse supernovae. In this review we highlight some current issues surrounding the nuclear physics input, astronomical observations, galactic chemical evolution, and theoretical simulations of r process astrophysical environments with goal of outlining a path toward resolving the remaining mysteries of the r-process.

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Detailed illustration of the accuracy of currently used nuclear-mass models

Cited by 33 publications

References 53 publications

Mass Measurements of Neutron-Deficient Y, Zr, and Nb Isotopes and Their Impact on $rp$ and $νp$ Nucleosynthesis Processes

Mass Measurements of Neutron-Deficient Y, Zr, and Nb Isotopes and Their Impact on $rp$ and $νp$ Nucleosynthesis Processes

Masses of Exotic Nuclei

Current Status of r-Process Nucleosynthesis

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