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Nuclear masses play a central role in nuclear astrophysics, significantly impacting the origin of the elements and observables used to constrain ultradense matter. A variety of techniques are available to meet this need, varying in their…

核实验 · 物理学 2020-10-26 Zach Meisel

Multimessenger observations of the neutron star merger event GW170817 have re-energized the debate over the astrophysical origins of the most massive elements via the r-process nucleosynthesis. A key aspect of such studies is comparing…

核理论 · 物理学 2020-10-06 S. Nikas , G. Perdikakis , M. Beard , R. Surman , M. R. Mumpower , P. Tsintari

The multi-ton-scale liquid xenon detectors, with an excellent energy resolution of a few keV, will be constructed to probe the dark-matter particles. In this paper, we show that precision measurements of the low-energy solar neutrinos via…

高能物理 - 唯象学 · 物理学 2019-02-15 Guo-yuan Huang , Shun Zhou

An ab initio calculation of atomic ionization of germanium (Ge) by neutrinos was carried out in the framework of multiconfiguration relativistic random phase approximation. The main goal is to provide a more accurate cross section formula…

In nuclei with an odd nucleon number the non-vanishing spin number density is the source of a pseudo-magnetic field, which favors the splitting of the nucleon Cooper pairs. Such an pseudo-magnetic field is generated always in the dynamics…

核理论 · 物理学 2025-08-12 Aurel Bulgac , Ibrahim Abdurrahman , Matthew Kafker , Ionel Stetcu

The electromagnetic transition between the almost degenerate 5/2+ and 3/2+ states in Th229 is deemed to be very sensitive to potential changes in the fine structure constant alpha. State of the art Hartree-Fock and Hartree-Fock-Bogoliubov…

核理论 · 物理学 2009-08-18 Elena Litvinova , Hans Feldmeier , Jacek Dobaczewski , Victor Flambaum

Possible consequences of ferromagnetic transition in dense matter suggested recently by Kutschera and W{\'o}jcik, for the magnetic properties of neutron stars, are studied. Specific model of dense matter, in which a small admixture of…

天体物理学 · 物理学 2011-05-23 P. Haensel , S. Bonazzola

A detailed study of inclusive deep inelastic scattering from mirror A = 3 nuclei at large values of Bjorken-x is presented. The main purpose is to estimate the theoretical uncertainties on the extraction of F2n from such measurements.…

核理论 · 物理学 2017-08-23 M. M. Sargsian , S. Simula , M. I. Strikman

It is important to understand the strong external magnetic field generated at the very beginning of high energy nuclear collisions. We study the effect of the magnetic field on the charmonium yield and anisotropic distribution in Pb+Pb…

高能物理 - 唯象学 · 物理学 2016-11-15 Xingyu Guo , Shuzhe Shi , Nu Xu , Zhe Xu , Pengfei Zhuang

We report the first calculations of nuclear properties near the drip-lines using the spherical Hartree-Fock-Bogoliubov mean-field theory with a finite-range force supplemented by continuum and particle number projection effects.…

核理论 · 物理学 2008-11-26 N. Schunck , J. L. Egido

In order to interpret precise measurements of molecular properties the finite nuclear mass corrections to the Born-Oppenheimer approximation have to be accounted for. It is shown that they can be obtained systematically in the perturbative…

化学物理 · 物理学 2015-05-14 Krzysztof Pachucki

The nuclear symmetry energy is defined by the second derivative of the energy per nucleon with respect to the proton-neutron asymmetry, and is sometimes approximated by the energy difference between the neutron matter and the symmetric…

核理论 · 物理学 2017-04-24 Y. Tsukioka , H. Nakada

Dipole magnetic moments of several long isotopic chains are analyzed within the self-consistent Finite Fermi System theory based on the Generalized Energy Density Functional method with exact account for the pairing and quasi-particle…

核理论 · 物理学 2008-04-29 I. N. Borzov , E. E. Saperstein , S. V. Tolokonnikov , G. Neyens , N. Severijns

We have measured neutron diffraction patterns in a single crystal sample of the pyrochlore compound Er$_2$Ti$_2$O$_7$ in the antiferromagnetic phase (T=0.3\,K), as a function of the magnetic field, up to 6\,T, applied along the [110]…

强关联电子 · 物理学 2015-05-19 H. B. Cao , I. Mirebeau , A. Gukasov , P. Bonville , C. Decorse

We present here a new determination of the quadrupole moment Q of hyperfine-probe-nuclei states of three different In isotopes: the 5+ 192 keV excited state of 114In (probe for Nuclear Orientation experiments), the 9/2+ ground state of…

核实验 · 物理学 2007-05-23 L. A. Errico , M. Weissmann , M. Renteria

In current simulations of fission, the number of protons and neutrons in a given fission fragment is almost always obtained by integrating the total density of particles in the sector of space that contains the fragment. Because of the…

核理论 · 物理学 2020-08-19 Marc Verriere , Nicolas Schunck , Toshihiko Kawano

Recent experimental results for the magnetic hyperfine field B_{\rm hf} at the nuclei of \textit{s-p} impurities such as ${}^{119}$Sn in intermetallic Laves phases RM_2 (R = Gd, Tb, Dy, Ho, Er; M = Fe, Co) and ${}^{111}$Cd in RCo_{2}, the…

强关联电子 · 物理学 2015-03-19 C. M. Chaves , A. L. de Oliveira , N. A. de Oliveira , A. Troper

An electron density functional approach for the calculation of the nuclear multipole moments is presented. The electronic matrix elements entering the experimentally observed hyperfine electron-nucleus interaction constants in atoms are…

核理论 · 物理学 2007-05-23 R. L. Pavlov , P. P. Raychev , V. P. Garistov , M. Dimitrova-Ivanovich , J. Maruani

Effective quark magnetic moments are extracted from experimental measurements as a function of the strangeness magnetic moment of the nucleon. Assumptions made in even the most general quark model analyses are ruled out by this…

核理论 · 物理学 2009-10-28 Derek B. Leinweber

Reliable predictions of weak rapid neutron capture ($\textit{r}$-process) abundances require a systematic treatment of nuclear physics uncertainties, especially neutron capture rates far from stability. We employ new neutron capture rates…

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