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After reviewing our microscopic approach to nuclear and neutron-rich matter, we focus on how nucleon-nucleon scattering is impacted by the presence of a dense hadronic medium, with special emphasis on the case where neutron and proton…

Nuclear Theory · Physics 2015-06-16 Francesca Sammarruca

The Coulomb-breakup method to extract the cross section for neutron radiative capture at astrophysical energies is analyzed in detail. In particular, its sensitivity to the description of the neutron-core continuum is ascertained. We…

Nuclear Theory · Physics 2018-07-23 Pierre Capel , Yvan Nollet

Indirect methods using nucleus-nucleus reactions at high energies (here, high energies mean $\sim$ 50 MeV/nucleon and higher) are now routinely used to extract information of interest for nuclear astrophysics. This is of extreme relevance…

Nuclear Theory · Physics 2015-10-05 C. A. Bertulani

We use the Quasiparticle Random Phase Approximation to include the effects of low-lying Gamow-Teller and first forbidden strength in neutrino capture by very neutron-rich nuclei with N = 50, 82, or 126. For electron neutrinos in what is…

Nuclear Theory · Physics 2008-11-26 Rebecca Surman , Jonathan Engel

The current investigation aims to study the ground-state properties of one of the most interesting isotopic chains in the periodic table, 94-168Sn, from the proton drip line to the neutron drip line by using the covariant density functional…

Nuclear Theory · Physics 2019-04-24 Younes El Bassem , Mostafa Oulne

Due to the lack of a free neutron target the structure function of the neutron cannot be measured directly and is therefore extracted from deuteron and proton DIS data. Because the deuteron is a bound nuclear system, in order to extract the…

High Energy Physics - Phenomenology · Physics 2011-09-29 O. Hen , E. Piasetzky , R. Shneor , L. B. Weinstein , D. W. Higinbotham

We employed the Skyrme-Hartree-Fock model to investigate the density distributions and their dependence on nuclear shapes and isospins in the superheavy mass region. Different Skyrme forces were used for the calculations with a special…

Nuclear Theory · Physics 2009-11-11 J. C. Pei , F. R. Xu , P. D. Stevenson

The aim of this work is to develop the deformed relativistic Hartree-Bogoliubov theory in continuum (DRHBc) theory based on the point-coupling density functionals and extend it to provide a unified description for all even-even nuclei in…

The possibility of description of the experimental data on total cross sections of the radiative neutron capture on 14C and 14N is considered within the frame of the potential cluster model with forbidden states and their classification…

Nuclear Theory · Physics 2013-02-05 N. V. Afanasyeva , S. B. Dubovichenko , A. V. Dzhazairov-Kakhramanov

The recently improved information on the stellar (n,gamma) cross sections of neutron-magic nuclei at N = 82, and in particular of 142Nd, turned out to represent a sensitive test for models of s-process nucleosynthesis. While these data were…

Astrophysics · Physics 2011-02-11 C. Arlandini , F. Kaeppeler , K. Wisshak , R. Gallino , M. Lugaro , M. Busso , O. Straniero

Motivated by the renewed interest in the surrogate nuclear reactions approach, an indirect method for determining compound-nuclear reaction cross sections, the prospects for determining (n, gamma) cross sections for deformed rare-earth and…

Nuclear Theory · Physics 2010-04-06 Jutta E. Escher , Frank S. Dietrich

We present some new results on heavy-element nuclear-structure properties calculated on the basis of the finite-range droplet model and folded-Yukawa single-particle potential. Specifically, we discuss calculations of nuclear ground-state…

Nuclear Theory · Physics 2007-05-23 Peter Möller , J. Rayford Nix

The neutron capture cross section of the s-process branch nucleus $^{63}$Ni affects the abundances of other nuclei in its region, especially $^{63}$Cu and $^{64}$Zn. In order to determine the energy dependent neutron capture cross section…

The properties of high-density nuclear and neutron matter are studied using a relativistic mean-field approximation to the nuclear matter energy functional. Based on ideas of effective field theory, nonlinear interactions between the fields…

Nuclear Theory · Physics 2009-10-30 Horst Mueller , Brian D. Serot

Microscopic optical model potential results for reaction cross sections of proton elastic scattering are presented. The applications cover the 10-1000 MeV energy range and consider both stable and unstable nuclei. The study is based on…

Nuclear Theory · Physics 2008-11-26 H. F. Arellano , M. Girod

Due to the lack of experimental data on extremely neutron-rich nuclei, theoretical values derived from nuclear physics models are essential for the rapid neutron capture process ($r$-process). Metal-poor stars enriched by the $r$-process…

High Energy Astrophysical Phenomena · Physics 2024-12-25 Meng-Hua Chen , Li-Xin Li , En-Wei Liang , Ning Wang

We compute the neutralino-nucleon cross section in several supersymmetric scenarios, taking into account all kind of experimental and astrophysical constraints. In addition, the constraints that the absence of dangerous charge and colour…

High Energy Physics - Phenomenology · Physics 2007-05-23 C. Munoz

Antiproton-nucleon ($\bar{p}N$) total cross sections are typically 3-4 times larger than the $NN$ ones at incident energies from a few hundreds to thousands MeV. We investigate antiproton-nucleus scattering as it could work as a probe of…

Nuclear Theory · Physics 2020-10-28 K. Makiguchi , W. Horiuchi , A. Kohama

Studies in nuclear astrophysics have long been associated with long runs at small accelerators, measuring ever-decreasing cross sections as one approached (but rarely reached) the energy of reactions in stars. But in recent years pioneering…

Nuclear Theory · Physics 2017-08-23 Sam M. Austin

The determination of astrophysical reaction rates requires different approaches depending on the conditions in hydrostatic and explosive burning. The focus here is on astrophysical reaction rates for radiative neutron capture reactions.…

Nuclear Theory · Physics 2022-11-10 Thomas Rauscher