Astronomical and nuclear sciences

Özet henüz yok.

We investigate the systematics of the maximum Electron-decay energy E as a function of the mass number A along isotopic chains with a fixed proton number across Z<47. By making use of the available curated nuclear data, we find that, for each fixed Z, the decay energy can be described to excellent accuracy by a linear…

The framework of nuclear lattice effective field theory (NLEFT) is applied to $^{24}\mathrm{Mg}$, with the perspective of obtaining a model-independent density map of the geometry of a sample of excited states of the nucleus. The Hamiltonian incorporates Wigner SU(4)-symmetric nuclear forces as well as the Coulomb int…

The 5730-year half-life of $^{14}$C, the physical basis of radiocarbon dating, is anomalously long compared to typical nuclear-physics expectations. Its origin has remained a subject of debate for many decades. Here we report an \textit{ab initio} nuclear lattice effective field theory (NLEFT) calculation of $^{14}$C…

The 5730-year half-life of $^{14}$C, the physical basis of radiocarbon dating, is anomalously long compared to typical nuclear-physics expectations. Its origin has remained a subject of debate for many decades. Here we report an \textit{ab initio} nuclear lattice effective field theory (NLEFT) calculation of $^{14}$C…

Understanding the evolution of nuclear size away from stability remains a central challenge in nuclear physics. In neutron-deficient systems, charge radii can be highly sensitive to the interplay between strong and electromagnetic interactions, and the effects of weak binding, giving rise to exotic nuclear phenomena.…

Understanding the evolution of nuclear size away from stability remains a central challenge in nuclear physics. In neutron-deficient systems, charge radii can be highly sensitive to the interplay between strong and electromagnetic interactions, and the effects of weak binding, giving rise to exotic nuclear phenomena.…

Lithium (Z = 3) is one of the lightest nuclei and exhibits a wide range of nuclear structure phenomena that are highly sensitive to neutron number. While the stable isotopes 6Li and 7Li are well established in nuclear technology, the unstable isotopes 3Li, 4Li, and 5Li provide an important testing ground for theoretic…

Abstract Direct measurements of nuclear reaction cross sections are not feasible for all target nucleus mass regions and incident particle energies due to experimental difficulties, such as stable target availability, energy resolution, and reaction threshold constraints. In such kind of situation, nuclear cross secti…

Abstract Alpha-induced reactions on heavy nuclei play a pivotal role in the nucleosynthesis of proton-rich isotopes via the astrophysical p-process. In this work, we present a detailed investigation of the 169 Tm( α , γ ) 173 Lu and 169 Tm( α , n ) 172 Lu reaction channels through systematically evaluated cross-sectio…

• ERCAN YILDIZ

We present the first ab initio lattice calculations of the proton-rich tin isotopes ^{99}Sn to ^{102}Sn using nuclear lattice effective field theory with high-fidelity two- and three-nucleon forces. For a given set of three-nucleon couplings, we reproduce binding energies with ∼1% accuracy for the even-even systems an…

• SERDAR ELHATISARI

In this study, an optical-model-based elastic scattering (n,el) reaction was investigated, in which a neutron was used as the projectile. The nucleon densities of the $^{127}$I were calculated and applied in the single folding method to obtain interaction potential for the neutron-$^{127}$I reaction as a function of p…

• ABDULLAH AYDIN