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A promising astrophysical site to produce the lighter heavy elements of the first $r$-process peak ($Z = 38-47$) is the moderately neutron rich ($0.4 < Y_e < 0.5$) neutrino-driven ejecta of explosive environments, such as core-collapse…

High Energy Astrophysical Phenomena · Physics 2022-08-17 A. Psaltis , A. Arcones , F. Montes , P. Mohr , C. J. Hansen , M. Jacobi , H. Schatz

The highlights and main results of this work can be summarized as follows : (1) The energy per nucleon of cold nuclear matter, derived by us using chiral sigma model, is in good agreement with the preliminary estimates inferred from…

High Energy Physics - Phenomenology · Physics 2008-02-03 Pradip Kumar Sahu

We study properties of the proton component of neutron star matter for a number of realistic nuclear models. Protons which form a few percent admixture tend to be localized in potential wells corresponding to neutron matter inhomogeneities…

Astrophysics · Physics 2007-05-23 M. Kutschera , S. Stachniewicz , A. Szmaglinski , W. Wojcik

Atomic nuclei and dense nucleonic matter in neutron stars exhibit short-range correlations (SRCs), where nucleons form temporally correlated pairs in proximity beyond mean-field approximation. It is essential to make precision measurement…

The neutron-proton Fermi-energy difference and the correlation to nucleon separation energies for some magic nuclei are investigated with the Skyrme energy density functionals and nuclear masses, with which the nuclear symmetry energy at…

Nuclear Theory · Physics 2013-03-28 Ning Wang , Li Ou , Min Liu

The strong nuclear interaction between nucleons (protons and neutrons) is the effective force that holds the atomic nucleus together. This force stems from fundamental interactions between quarks and gluons (the constituents of nucleons)…

Nuclear Experiment · Physics 2020-10-28 A. Schmidt , J. R. Pybus , R. Weiss , E. P. Segarra , A. Hrnjic , A. Denniston , O. Hen , E. Piasetzky , L. B. Weinstein , N. Barnea , M. Strikman , A. Larionov , D. Higinbotham , S. Adhikari , M. Amaryan , G. Angelini , G. Asryan , H. Atac , H. Avakian , C. Ayerbe Gayoso , L. Baashen , L. Barion , M. Bashkanov , M. Battaglieri , A. Beck , I. Bedlinskiy , F. Benmokhtar , A. Bianconi , A. S. Biselli , F. Bossu , S. Biarinov , W. J. Briscoe , W. Brooks , V. D. Burkert , F. Cao , D. S. Carman , J. C. Carvajal , A. Celentano , P. Chatagnon , T. Chetry , G. Ciullo , L. Clark , E. Cohen , P. L. Cole , M. Contalbrigo , V. Crede , R. Cruz-Torres , A. D'Angelo , N. Dashyan , R. De Vita , E. De Sanctis , M. Defurne , A. Deur , S. Diehl , C. Djalali , M. Duer , M. Dugger , R. Dupre , H. Egiyan , M. Ehrhart , A. El Alaoui , L. El Fassi , P. Eugenio , A. Filippi , T. A. Forest , G. Gavalian , S. Gilad , G. P. Gilfoyle , K. L. Giovanetti , F. X. Girod , C. Giuseppe , D. I. Glazier , E. Golovatch , R. W. Gothe , K. A. Griffioen , L. Guo , K. Hafidi , H. Hakobyan , C. Hanretty , N. Harrison , M. Hattawy , F. Hauenstein , T. B. Hayward , K. Hicks , M. Holtrop , Y. Ilieva , I. Illari , D. Ireland , B. S. Ishkanov , E. L. Isupov , D. Jenkins , H. S. Jo , K. Joo , D. Keller , M. Khachatryan , A. Khanal , M. Khandaker , C. W. Kim , W. Kim , F. J. Klein , I. Korover , V. Kubarovsky , L. Lanza , M. Leali , P. Lenisa , I. J. D. MacGregor , D. Marchand , N. Markov , L. Marsicano , V. Mascagna , S. May-Tal Beck , B. McKinnon , M. Mirazita , V. Mokeev , C. Munoz Camacho , B. Mustapha , P. Nadel-Turonski , S. Nanda , S. Niccolai , G. Niculescu , M. Osipenko , A. I. Ostrovidov , M. Paolone , L. L. Pappalardo , R. Paremuzyan , K. Park , E. Pasyuk , M. Patsyuk , W. Phelps , O. Pogorelko , J. W. Price , Y. Prok , D. Protopopescu , M. Ripani , D. Riser , A. Rizzo , G. Rosner , P. Rossi , F. Sabatie , C. Salgado , B. Schmookler , R. A. Schumacher , Y. G. Sharabian , U. Shrestha , Iu. Skorodumina , D. Sokhan , O. Soto , N. Sparveris , S. Stepanyan , I. I. Strakovsky , S. Strauch , J. A. Tan , N. Tyler , M. Ungaro , L. Venturelli , H. Voskanyan , E. Voutier , R. Wang , D. P. Watts , X. Wei , M. H. Wood , N. Zachariou , J. Zhang , Z. W. Zhao , X. Zheng

In heavy nuclei the spatial distribution of protons and neutrons is different. At CERN SPS energies production of $\pi^+$ and $\pi^-$ differs for $pp$, $pn$, $np$ and $nn$ scattering. These two facts lead to an impact parameter dependence…

Nuclear Theory · Physics 2009-11-10 Antoni Szczurek , Piotr Pawlowski

To improve the constraints of symmetry energy at subsaturation density, measuring and accumulating more neutron skin data for neutron rich unstable nuclei is naturally required. Aiming to probe the neutron skin of unstable nuclei by using…

Nuclear Theory · Physics 2023-04-25 Junping Yang , Xiang Chen , Ying Cui , Zhuxia Li , Yingxun Zhang

A realistic model is suggested based on the quasiparticle Lagrange version of the self-consistent Finite Fermi Systems theory supplemented with the microscopically calculated surface parameters of the Landau-Migdal interaction amplitude.…

Nuclear Theory · Physics 2007-05-23 M. Baldo , U. Lombardo , E. E. Saperstein , M. V. Zverev

We studied the $^{12}$C(p,2p+n) reaction at beam momenta of 5.9, 8.0 and 9.0 GeV/c. For quasielastic (p,2p) events we reconstructed {\bf p_f} the momentum of the knocked-out proton before the reaction; {\bf p_f} was then compared…

Nucleon momentum distributions at various densities and isospin-asymmetries for nuclear matter are investigated systematically within the extended Bruecker-Hartree-Fock approach.The shapes of the normalized momentum distributions varying…

Nuclear Theory · Physics 2019-11-27 Z. X. Yang , X. L. Shang , G. C. Yong , W. Zuo , Y. Gao

One of the major uncertainties in the dense matter equation of state has been the nuclear symmetry energy. The density dependence of the symmetry energy is important in nuclear astrophysics, as it controls the neutronization of matter in…

Nuclear Theory · Physics 2013-07-01 James M. Lattimer , Yeunhwan Lim

We study the one-body momentum distribution at different densities in nuclear matter, with special emphasis on its components at high momentum. Explicit calculations for finite neutron-proton asymmetry, based on the ladder self-consistent…

Nuclear Theory · Physics 2014-04-23 A. Rios , A. Polls , W. H. Dickhoff

We discuss the ground state properties of matter in outer and inner crusts of neutron stars under the influence of strong magnetic fields. In particular, we demonstrate the effects of Landau quantization of electrons on compositions of…

High Energy Astrophysical Phenomena · Physics 2015-06-12 Rana Nandi , Debades Bandyopadhyay

The two-nucleon momentum distributions have been calculated for nuclei up to A=40 and various values of the relative and center-of-mass momenta and angle between them. For complex nuclei a parameter-free linked-cluster expansion, based upon…

Nuclear Theory · Physics 2016-10-19 Massimiliano Alvioli , Claudio Ciofi degli Atti , Hiko Morita

Low-density neutron matter is relevant to the study of neutron-rich nuclei and neutron star crusts. Unpolarized neutron matter has been studied extensively over a number of decades, while experimental guidance has recently started to emerge…

Nuclear Theory · Physics 2011-06-24 Alexandros Gezerlis

We study relationships between properties of collective excitations in finite nuclei and the phase transition density $n_t$ and pressure $P_t$ at the inner edge separating the liquid core and the solid crust of a neutron star. A theoretical…

Nuclear Theory · Physics 2015-06-19 N. Paar , Ch. C. Moustakidis , T. Marketin , D. Vretenar , G. A. Lalazissis

We present a unified description of dense matter and neutron-star structure based on simple but physically motivated models. Starting from the thermodynamics of degenerate Fermi gases, we construct an equation of state for cold, catalyzed…

Nuclear Theory · Physics 2026-01-28 Elissaios Andronopoulos , Konstantinos N. Gourgouliatos

Matter of subnuclear density in the inner crusts of neutron stars consists of neutron-rich atomic nuclei immersed in strongly degenerate relativistic gas of electrons and strongly nonideal liquid of neutrons. We give a brief account of…

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