Zobrazeno 1 - 10
of 326
pro vyhledávání: '"Ravlic, A."'
Self-consistent microscopic calculations for electron captures on nuclei in core-collapse supernovae
Calculations for electron capture rates on nuclei with atomic numbers between $Z=20$ and $Z=52$ are performed in a self-consistent finite-temperature covariant energy density functional theory within the relativistic quasiparticle random-phase approx
Externí odkaz:
http://arxiv.org/abs/2412.00650
Autor:
Ravlić, A., Nazarewicz, W.
Superheavy nuclei represent the heaviest atoms and nuclides known at the limit of mass and charge. The observed superheavy nuclei are all proton-rich; they decay primarily by emitting $\alpha$ particles and fission, with a possible small electron cap
Externí odkaz:
http://arxiv.org/abs/2409.04620
Collective nuclear excitations, like giant resonances, are sensitive to nuclear deformation, as evidenced by alterations in their excitation energies and transition strength distributions. A common theoretical framework to study these collective mode
Externí odkaz:
http://arxiv.org/abs/2404.13266
In stellar environments nuclei appear at finite temperatures, becoming extremely hot in core-collapse supernovae and neutron star mergers. However, due to theoretical and computational complexity, most model calculations of nuclear properties are per
Externí odkaz:
http://arxiv.org/abs/2309.09302
A clear connection can be established between properties of nuclear matter and finite-nuclei observables, such as the correlation between the slope of the symmetry energy and dipole polarizability, or between compressibility and the isoscalar monopol
Externí odkaz:
http://arxiv.org/abs/2308.16533
In numerous astrophysical scenarios, such as core-collapse supernovae and neutron star mergers, as in well as heavy-ion collision experiments, transitions between thermally populated nuclear excited states have been shown to play an important role. D
Externí odkaz:
http://arxiv.org/abs/2209.10009
Nuclear magnetic-dipole (M1) and Gamow-Teller (GT) transitions provide insight into the spin-isospin properties of atomic nuclei. By considering them as unified spin-isospin transitions, the M1/GT transition strengths and excitation energies are subj
Externí odkaz:
http://arxiv.org/abs/2201.00834
Autor:
Giraud, S., Ney, E. M., Ravlić, A., Zegers, R. G. T., Engel, J., Paar, N., Brown, B. A., Gabler, J. -M., Lesniak, J., Rebenstock, J.
The temperature dependence of stellar electron-capture (EC) rates is investigated, with a focus on nuclei around $N=50$, just above $Z=28$, which play an important role during the collapse phase of core-collapse supernovae (CCSN). Two new microscopic
Externí odkaz:
http://arxiv.org/abs/2112.01626
The finite-temperature linear response theory based on the finite-temperature relativistic Hartree-Bogoliubov (FT-RHB) model is developed in the charge-exchange channel to study the temperature evolution of spin-isospin excitations. Calculations are
Externí odkaz:
http://arxiv.org/abs/2108.08702
Nuclear matrix elements (NMEs) for two-neutrino double-beta decay ($2\nu\beta\beta$) are studied in the framework of relativistic nuclear energy density functional (REDF). The properties of nuclei involved in the decay are obtained using the relativi
Externí odkaz:
http://arxiv.org/abs/2107.08747