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Using the Theory of Finite Fermi Systems, we obtained a non-magic nuclei generalization of the old theoretical results by J. Speth for magic nuclei dealing with the transitions between excited states and moment values of excited state. Such…

Nuclear Theory · Physics 2011-10-05 Sergei Kamerdzhiev , Dmitrii Voitenkov

In this work we want to study quasielastic (p, n) exchange reactions using a semi-microscopic optical model derived in a previous work [1] based on a nuclear matter approach where the real and imaginary parts are given by the first and…

Nuclear Theory · Physics 2023-03-07 Juan López Moraña , Xavier Viñas

The gamma-ray strength function for gamma energies in the 1-7 MeV region has been measured for 161,162-Dy and 171,172-Yb using the (3-He,alpha gamma) reaction. Various models are tested against the observed gamma-ray strength functions. The…

Nuclear Experiment · Physics 2009-10-31 A. Voinov , M. Guttormsen , E. Melby , J. Rekstad , A. Schiller , S. Siem

An unexpected enhancement in the $\gamma$-ray strength function, as compared to the low energy tail of the Giant Dipole Resonance (GDR), has been observed for Sc, Ti, V, Fe and Mo isotopes for $E_\gamma<4$ MeV. This enhancement was not…

Background : Several recent experiments report significant low-energy isoscalar monopole strength, below the giant resonance, in various nuclei. In light $\alpha$-conjugate nuclei, these low-energy resonances were recently interpreted as…

Nuclear Theory · Physics 2022-04-13 F. Mercier , J. -P. Ebran , E. Khan

We formulate a microscopic theory to calculate cross section of the radiative neutron capture on neutron-rich nuclei using the continuum quasiparticle random-phase approximation. This formulation is designed to be applied to neutron-rich…

Nuclear Theory · Physics 2025-04-28 Teruyuki Saito , Masayuki Matsuo

We examine the global performance of an extended self-consistent mean field theory of 2+ excitations in even-even nuclei. 518 nuclei are included in our survey, comprising all but 39 of the known nuclei tabulated by Raman et al. The theory…

Nuclear Theory · Physics 2008-11-26 G. F. Bertsch , M. Girod , S. Hilaire , J. -P. Delaroche , H. Goutte , S. Pe'ru

A systematic study of low energy nuclear structure at normal deformation is carried out using the Hartree-Fock-Bogoliubov theory extended by the Generator Coordinate Method and mapped onto a 5-dimensional collective quadrupole Hamiltonian.…

Nuclear Theory · Physics 2010-04-06 J. P. Delaroche , M. Girod , J. Libert , H. Goutte , S. Hilaire , S. Peru , N. Pillet , G. F. Bertsch

The electric dipole (E1) strength functions have been systematically calculated based on the time-dependent density functional theory (TDDFT), using the finite amplitude method and the real-time approach to the TDDFT with pairing…

Nuclear Theory · Physics 2017-08-23 Shuichiro Ebata , Tsunenori Inakura , Takashi Nakatsukasa

Gamow-Teller (GT) strength transitions are an ideal probe for testing nuclear structure models. In addition to nuclear structure, GT transitions in nuclei directly affect the early phases of Type Ia and Type-II supernovae core collapse…

Nuclear Theory · Physics 2011-08-04 Jameel-Un Nabi , Muhammad Sajjad

Analytic average mean-field potentials of the Fermi-function (Woods-Saxon) type for the whole nuclear chart with space-dependent effective mass are deduced from the D1S Gogny force. Those ready-for-use potentials are advertised as an…

Nuclear Theory · Physics 2021-03-03 A. Bhagwat , M. Centelles , X. Viñas , P. Schuck

We present the first applications of the second random-phase-approximation model with the finite-range Gogny interaction. We discuss the advantages of using such an interaction in this type of calculations where 2 particle-2 hole…

Nuclear Theory · Physics 2015-06-05 D. Gambacurta , M. Grasso , V. De Donno , G. Co' , F. Catara

New superheavy nuclei are often identified through their characteristic $\alpha$-decay energies, which requires accurate calculations of $Q_{\alpha}$ values. While many $Q_{\alpha}$ predictions are available, little is known about their…

Nuclear Theory · Physics 2019-01-30 Erik Olsen , Witold Nazarewicz

We investigate the effects of the pairing in spherical nuclei. We use the same finite-range interaction of Gogny type in the three steps of our approach, Hartree-Fock, Bardeen, Cooper and Schrieffer, and quasi-particle random phase…

Nuclear Theory · Physics 2017-06-07 V. De Donno , G. Co' , M. Anguiano , A. M. Lallena

Bulk and decay properties, including deformation energy curves, charge mean square radii, Gamow-Teller (GT) strength distributions, and beta-decay half-lives, are studied in neutron-deficient even-even and odd-A Hg and Pt isotopes. The…

Nuclear Theory · Physics 2015-03-11 J. M. Boillos , P. Sarriguren

Low-energy E1 strength in neutron-rich $^{132-164}$Sn isotopes is analyzed in the framework of the Skyrme random phase approximation (RPA) with different Skyrme forces. A double folding procedure is applied to take into account the…

Nuclear Theory · Physics 2011-07-15 J. Kvasil , V. O. Nesterenko , W. Kleinig , D. Bozhik , P. -G. Reinhard

The aim of the present work is a state-by-state analysis of possible E1 and M1 transitions in $^{58}$Ni with a high-resolution (p,p') experiment at 295 MeV and very forward angles including 0{\deg} and a comparison to results from studies…

The most popular Gogny parametrizations, namely D1S, D1N and D1M, describe accurately the ground-state properties of spherical and deformed finite nuclei all across the mass table obtained with Hartree--Fock--Bogoliubov (HFB) calculations.…

Partial cross sections of the $^{89}$Y(p,$\gamma$)$^{90}$Zr reaction have been measured to investigate the $\gamma$-ray strength function in the neutron-magic nucleus $^{90}$Zr. For five proton energies between $E_p=3.65$ MeV and $E_p=4.70$…

Nuclear Experiment · Physics 2015-04-21 L. Netterdon , A. Endres , S. Goriely , J. Mayer , P. Scholz , M. Spieker , A. Zilges

An extension of the Barcelona Catania Paris Madrid (BCPM) energy density functional is proposed to deal with odd-mass systems as well as multiquasiparticle excitations. The extension is based on the assumption that the equal filling…

Nuclear Theory · Physics 2024-04-25 S. A. Giuliani , L. M. Robledo