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Shedding Light on the Origin of ^{204}Pb, the Heaviest s-Process-Only Isotope in the Solar System
(2024-08-02)
Asymptotic giant branch stars are responsible for the production of most of the heavy isotopes beyond Sr observed in the solar system. Among them, isotopes shielded from the r-process contribution by their stable isobars ...
Shell mergers in the late stages of massive star evolution: new insight from 3D hydrodynamic simulations
(2024-07-23)
One-dimensional (1D) stellar evolution models are widely used across various astrophysical fields, however they are still dominated by important uncertainties that deeply affect their predictive power. Among those, the ...
3D simulations of a neon burning convective shell in a massive star
(2024-07-01)
The treatment of convection remains a major weakness in the modelling of stellar evolution with one-dimensional (1D) codes. The ever-increasing computing power makes now possible to simulate in three-dimensional (3D) part ...
Measurement of the prompt fission γ -rays from slow neutron-induced fission of 235 U with STEFF
(2024-03)
The average energy and multiplicity of prompt γ-rays from slow neutron-induced fission of 235U have been measured using the STEFF spectrometer at the neutron time-of-flight facility n_TOF. The individual responses from 11 ...
The Nuclear Reaction Network WinNet
(2023-10-11)
We present the state-of-the-art single-zone nuclear reaction network WinNet, which is capable of calculating the nucleosynthetic yields of a large variety of astrophysical environments and conditions. This ranges from the ...
74 Ge( n, γ ) cross section below 70 keV measured at n_TOF CERN
(2022-12-09)
Neutron capture reaction cross sections on 74Ge are of importance to determine 74Ge production during the astrophysical slow neutron capture process. We present new resonance data on 74Ge(n, γ) reactions below 70 keV neutron ...
First 80Se(n,γ) cross section measurement with high resolution in the full stellar energy range 1 eV - 100 keV and its astrophysical implications for the s-process
(2022-02-24)
Most elements heavier than iron have been generated in the stellar media by means of neutron capture reactions, approximately half are produced by the slow neutron capture or s-process. Radiative neutron capture cross ...
Destruction of the cosmic γ -ray emitter Al 26 in massive stars: Study of the key Al 26 (n,p) reaction
(2021-08-30)
The Al26(n,p)Mg26 reaction is the key reaction impacting on the abundances of the cosmic γ-ray emitter Al26 produced in massive stars and impacts on the potential pollution of the early solar system with Al26 by asymptotic ...
Measurement of the 72Ge(n,γ) cross section over a wide neutron energy range at the CERN n_TOF facility
(2021-04-27)
The Ge72(n,γ) cross section was measured for neutron energies up to 300keV at the neutron time-of-flight facility n_TOF (CERN), Geneva, for the first time covering energies relevant to heavy-element synthesis in stars. The ...
Radiative neutron capture cross-section measurement of ge isotopes at n_TOF CERN facility and its importance for stellar nucleosynthesis
(2021-04-01)
This manuscript summarizes the results of radiative neutron capture cross-section measurements on two stable germanium isotopes, 70Ge and 73Ge. Experiments were performed at the n_TOF facility at CERN via the time-of-flight ...