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Related papers: Neutron Skins: Weak Elastic Scattering and Neutron…

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We study whether the neutron skin thickness $\Delta r_{np}$ of ${}^{208}$Pb originates from the bulk or from the surface of the neutron and proton density distributions in mean field models. We find that the size of the bulk contribution to…

Nuclear Theory · Physics 2011-09-21 X. Roca-Maza , M. Centelles , X. Viñas , M. Warda

The observation of the x-ray pulse profile emitted by hotspots on the surface of neutron stars offers a unique tool to measure the bulk properties of these objects, including their masses and radii. The x-ray emission takes place at the…

General Relativity and Quantum Cosmology · Physics 2019-03-06 Hector O. Silva , Nicolás Yunes

The saturation density of nuclear matter $\rho_0$ is a fundamental nuclear physics property that is difficult to predict from fundamental principles. The saturation density is closely related to the interior density of a heavy nucleus, such…

Nuclear Theory · Physics 2020-10-21 C. J. Horowitz , J. Piekarewicz , Brendan Reed

The Neutron-star Interior Composition ExploreR (NICER) is collecting data to measure the radii of neutron stars by observing the pulsed emission from their surfaces. The primary targets are isolated, rotation-powered pulsars, in which the…

High Energy Astrophysical Phenomena · Physics 2019-02-27 Michi Baubock , Dimitrios Psaltis , Feryal Ozel

Configurational information entropy (CIE) theory was employed to determine the neutron skin thickness of neutron-rich calcium isotopes. The nuclear density distributions and fragment cross-sections in 350 MeV/u $^{40-60}$Ca + $^{9}$Be…

Nuclear Theory · Physics 2022-01-19 Chunwang Ma , Yipu Liu , Huiling Wei , Jie Pu , Kaixuan Cheng , Yuting Wang

Measurement of the parity-violating electron scattering asymmetry from ${}^{208}$Pb has demonstrated a new opportunity at Jefferson Lab to measure the weak charge distribution and hence pin down the neutron radius in nuclei in a relatively…

Nuclear Experiment · Physics 2015-10-21 Robert Michaels

The recent unbiased measurements of the electric form factor of the neutron suggest that its shape may be interpreted as a smooth broad distribution with a bump at Q^2 \approx 0.3(GeV/c)^2 superimposed. As a consequence the corresponding…

High Energy Physics - Phenomenology · Physics 2008-11-26 J. Friedrich , Th. Walcher

The PREX and the CREX group reported their skin values. Using the Love-Franey (LF) $t$-matrix folding model with the neutron and proton densities scaled to the neutron radius $r_{\rm n}^{208}({\rm PREX2})$ and the proton radius of the…

Nuclear Theory · Physics 2025-07-01 Tomotsugu Wakasa , Shingo Tagami , Masanobu Yahiro

Pulse profile modelling using X-ray data from NICER permits the inference of mass and radius for rotation-powered millisecond pulsars. This in turn constrains the equation of state of cold dense matter. Previous studies indicate that the…

High Energy Astrophysical Phenomena · Physics 2025-04-02 Erik Bootsma , Serena Vinciguerra , Anna L. Watts , Yves Kini , Tuomo Salmi

We describe a relation between the symmetry energy coefficients c_sym(rho) of nuclear matter and a_sym(A) of finite nuclei that accommodates other correlations of nuclear properties with the low-density behavior of c_sym(rho). Here we take…

Nuclear Theory · Physics 2009-03-26 M. Centelles , X. Roca-Maza , X. Vinas , M. Warda

The correlation between neutron skin-thickness of a neutron-rich nucleus and slope parameter of symmetry energy is assessed as a function of density using relativistic mean field models containing non-linear couplings among different…

Nuclear Theory · Physics 2022-04-06 Chiranjib Mondal

We analyze total reaction cross sections, $\sigma_R$, for exploring their sensitivity to the neutron-skin thickness of nuclei. We cover 91 nuclei of O, Ne, Mg, Si, S, Ca, and Ni isotopes. The cross sections are calculated in the Glauber…

Nuclear Theory · Physics 2015-06-18 W. Horiuchi , Y. Suzuki , T. Inakura

Astrophysical observations from NICER and gravitational wave data constrain the properties of matter at the cores of neutron stars, enabling us to probe high-density matter with greater accuracy. To understand its implications for neutron…

High Energy Astrophysical Phenomena · Physics 2026-02-13 Asim Kumar Saha , Tuhin Malik , Ritam Mallick

We present the proton and neutron vector form factors in a convenient parametric form that is optimized for momentum transfers $\lesssim$ few GeV$^2$. The form factors are determined from a global fit to electron scattering data and precise…

High Energy Physics - Phenomenology · Physics 2020-10-23 Kaushik Borah , Richard J. Hill , Gabriel Lee , Oleksandr Tomalak

Photon from neutron-proton bremsstrahlung in p+Pb reactions is examined as a potential probe of the neutron-skin thickness in different centralities and at different proton incident energies. It is shown that the best choice of reaction…

Nuclear Theory · Physics 2015-07-21 Gao-Feng Wei

Bulk nuclear observables such as charge radii and binding energies are well described by both nonrelativistic and covariant mean-field models. However, predictions of neutron radii, which are not tightly constrained by reliable data, vary…

Nuclear Theory · Physics 2009-07-09 R. J. Furnstahl

We demonstrate that future radius measurement of the NICER mission have the potential to reveal the existence of a strong phase transition in dense neutron star matter by confirming the existence of so called twin stars, compact star…

High Energy Astrophysical Phenomena · Physics 2022-08-31 Jan-Erik Christian , Jürgen Schaffner-Bielich

Energy-resolved neutron imaging at a pulsed source utilizes the energy-dependent neutron transmission measured via time-of-flight to extract quantitative information about the internal microstructure of an object. At the RADEN instrument at…

Proton and neutron density profiles of 760 nuclei in the mass region of A=16-304are analyzed using the Skyrme energy density for the parameter set SLy4. Simple formulae are obtained to fit the resulting radii and diffuseness data. These…

Nuclear Theory · Physics 2015-12-09 W. M. Seif , Hesham Mansour

The experimental and theoretical status of elastic electron scattering from the nucleon is reviewed. A wealth of new data of unprecedented precision, especially at small values of the momentum transfer, in parallel to new theoretical…

Nuclear Experiment · Physics 2014-11-18 Kees de Jager