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The synthesis of hyper-heavy elements is investigated under conditions simulating neutron star environment. The Constrained Molecular Dynamics (CoMD) approach is used to simulate low energy collisions of extremely n-rich nuclei. A new type…

Nuclear Theory · Physics 2022-07-27 M. Veselsky , V. Petousis , Ch. C. Moustakidis , G. A. Souliotis , A. Bonasera

Although the energies associated with nuclear reactions are due primarily to interactions involving nuclear forces, the rates and probabilities associated with those reactions are effectively governed by electromagnetic forces. Charges in…

Plasma Physics · Physics 2020-11-12 A. Y. Wong , J. Z. Chen , M. J. Guffey , A. Gunn , B. Mei , C. C. Shih , Q. Wang , Y. Zhang

Outer envelopes of neutron stars consist mostly of fully ionized, strongly coupled Coulomb plasmas characterized by typical densities about 10^4-10^{11} g/cc and temperatures about 10^4-10^9 K. Many neutron stars possess magnetic fields…

Astrophysics · Physics 2007-05-23 A. Y. Potekhin , G. Chabrier , D. G. Yakovlev

In this work we study properties of neutron star crusts, where matter is expected to consist of nuclei surrounded by superfluid neutrons and a homogeneous background of relativistic electrons. The nuclei are disposed in a Coulomb lattice,…

Nuclear Theory · Physics 2009-10-28 Oe. Elgaroey , L. Engvik , E. Osnes , F. V. De Blasio , M. Hjorth-Jensen , G. Lazzari

We study the role of the effective Coulomb interaction strength and length on the dynamics of nucleons in conditions according to those in a neutron star's crust. Calculations were made with a semi-classical molecular dynamics model,…

Nuclear Theory · Physics 2014-05-14 P. N. Alcain , P. A. Giménez Molinelli , J. I. Nichols , C. O. Dorso

For a dense stellar matter, which is electrically neutral and in beta equilibrium, the electron chemical potential, mu_e, will depend nontrivially on baryonic matter density. It is generally expected that as density increases, the electron…

High Energy Astrophysical Phenomena · Physics 2009-09-09 Kyungmin Kim , Hyun Kyu Lee

In high neutron flux environments where isomers can be strongly populated by nucleonic reactions, isotope abundances from reaction network chains can be affected by the population of nuclear isomers. At high temperatures and densities there…

Nuclear Theory · Physics 2007-05-23 T. C. Luu , J. L. Friar , A. C. Hayes

We review the present status of the experimental and theoretical developments in the field of strangeness in nuclei and neutron stars. We start by discussing the $\bar K N$ interaction, that is governed by the presence of the…

Nuclear Experiment · Physics 2020-04-22 Laura Tolos , Laura Fabbietti

In the formation and evolution of compact stars, nuclear matter explores high thermal excursions and is the site of intense neutrino emission. Neutrino transport as well as structural properties of this matter depend on the presence of…

Nuclear Theory · Physics 2008-11-26 P. Chomaz , C. Ducoin , F. Gulminelli , K. H. O. Hasnaoui , P. Napolitani

The effect of strange interactions in neutron star matter and the role of the strange meson-hyperon couplings are studied in a relativistic quark model where the confining interaction for quarks inside a baryon is represented by a…

Nuclear Theory · Physics 2019-05-15 H. S. Sahoo , R. N. Mishra , D. K. Mohanty , P. K. Panda , N. Barik

The problem of determining the effects of the surrounding plasma on nuclear reaction rates in stars is formulated ab initio, using the techniques of quantum statistical mechanics. We derive a result that expresses the complete effects of…

Astrophysics · Physics 2008-11-26 Lowell S. Brown , R. F. Sawyer

Nuclear mass data provide EMPIRICAL evidence of: 1. Clustering of nucleons; 2. Attractive n-p interactions; and 3. Repulsive but symmetric n-n and p-p interactions after correcting for the repulsive Coulomb interactions between positive…

Nuclear Theory · Physics 2007-05-23 O. Manuel

Inertial confinement fusion hotspots and cluster Coulomb explosion plasmas may develop a positive net electric charge. The Coulomb barrier penetrability and the rate of nuclear fusion reactions at ultra-low energies ($\lesssim 10$ keV) are…

Nuclear Theory · Physics 2019-06-18 Salvatore Simone Perrotta , Aldo Bonasera

We investigate nuclear pasta phases appearing in hot neutron-star matter based on the compressible liquid-drop model, where the matter consists of a dense liquid phase and a dilute gas phase separated by a sharp interface. The surface…

Nuclear Theory · Physics 2026-03-18 Jian Zhou , Junbo Pang , Hong Shen , Jinniu Hu

We present a comprehensive and pedagogic discussion of the properties of photons in cold and dense nuclear matter based on the resummed one-loop photon self energy. Correlations between electrons, muons, protons and neutrons in beta…

High Energy Astrophysical Phenomena · Physics 2018-04-18 Stephan Stetina , Ermal Rrapaj , Sanjay Reddy

Within the framework of Lanzhou quantum molecular dynamics transport model, the correlation of initial deformation and isospin diffusion is systematically investigated in collisions of $^{238}$U + $^{238}$U. The impacts of the collision…

Nuclear Theory · Physics 2025-06-24 Yuan-Qing Guo , Ya-Peng Zhang , Zhao-Qing Feng

In dense astrophysical plasmas, neutron capture populates highly excited nuclear states close to the neutron threshold. The impact of additional low-energy nuclear excitations via coupling to the atomic shell on the ability of the so-formed…

Nuclear Theory · Physics 2014-07-28 Stephan Helmrich , Katja Spenneberg , Adriana Pálffy

A plasmon is a collective excitation of electrons due to the Coulomb interaction. Both plasmons and single-particle excitations (SPEs) are eigenstates of bulk metallic systems and they are orthogonal to each other. However, in…

Mesoscale and Nanoscale Physics · Physics 2022-05-03 Tomohiro Yokoyama , Masayuki Iio , Takashi Kinoshita , Takeshi Inaoka , Hajime Ishihara

The properties of matter are significantly modified by strong magnetic fields, $B>>2.35\times 10^9$ Gauss ($1 G =10^{-4} Tesla$), as are typically found on the surfaces of neutron stars. In such strong magnetic fields, the Coulomb force on…

Astrophysics · Physics 2008-11-26 Dong Lai

I calculate the rate of electromagnetic scattering in degenerate and partially degenerate plasmas composed of electrons, muons, protons, and neutrons. Correlations with strong interactions, induced by the polarizability of…

Nuclear Theory · Physics 2019-03-01 Stephan Stetina