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NSR database version of May 30, 2024.

Search: Author = P.Vesely

Found 34 matches.

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2023BY03      Phys.Rev. C 108, 024615 (2023)

P.Bydzovsky, D.Denisova, D.Petrellis, D.Skoupil, P.Vesely, G.De Gregorio, F.Knapp, N.Lo Iudice

Self-consistent many-body approach to the electroproduction of hypernuclei

NUCLEAR REACTIONS 12C(e, eK+)12B, 16O(e, eK+)16N, 40Ca(e, eK+)40K, 48Ca(e, eK+)48K, E*<31 MeV; calculated differential σ(θ) for hypernuclei electroproduction, excitation spectrum, σ of electroproduction for selected hypernucleus states. Microscopic self-consistent many-body mean field approach, known as Tamm-Dancoff for hypernuclei extended by equation of motion phonon method (EMPM). Comparison to available experimental data and empirical shell-model calculations. Relevance to the preparation of planned E12-15-008 experiment at JLab.

NUCLEAR STRUCTURE 12B, 16N, 28Al, 40K, 48K; calculated Λ binding energy for hypernuclei. 40K, 48K; calculated levels of hypernuclei, J, π, proton and Λ single particle states. Tamm-Dancoff formalism with the NF YNG interaction and elementary amplitudes - SLA and BS3.

doi: 10.1103/PhysRevC.108.024615
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2023DE21      Phys.Rev. C 108, 024316 (2023)

G.De Gregorio, F.Knapp, P.Vesely, N.Lo Iudice

Survey of the 8He properties within a microscopic multiphonon approach

NUCLEAR STRUCTURE 8He; calculated levels, J, π, ground-state energy, proton and neutron radii, charge radii, proton and neutron single-particle energies, neutron and proton densities, B(E1) strength distribution, E1 isovector and isoscalar transition strengths, dipole polarizability, proton and neutron transition densities. Equation of motion phonon method (EMPM) which constructs and solves iteratively a set of equations of motion and yields states composed of an arbitrary number (n=2, 3, ...) of particle-hole (p-h) or two-quasiparticle Tamm-Dancoff (TD) phonons. Comparison to available experimental data.

NUCLEAR REACTIONS 8He(γ, X), E<40 MeV; calculated E1 σ(E).

doi: 10.1103/PhysRevC.108.024316
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2023KN01      Phys.Rev. C 107, 014305 (2023)

F.Knapp, P.Papakonstantinou, P.Vesely, G.De Gregorio, J.Herko, N.Lo Iudice

Comparative analysis of formalisms and performances of three different beyond-mean-field approaches

NUCLEAR STRUCTURE 40Ca; calculated E1 and E2 responses, B(E1) and B(E2) distributions. 16O, 40,48Ca; calculated isovector and isoscalar E1 (dipole) strength functions, E2 (quadrupole) strength functions, E3 (octupole) strength functions, monopole strength function, energy weighted running sums of strength functions. Calculations using equation of motion phonon method (EMPM), second Tamm-Dancoff and random-phase approximations (STDA and SRPA).

doi: 10.1103/PhysRevC.107.014305
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2022BY02      Phys.Rev. C 106, 044609 (2022)

P.Bydzovsky, D.Denisova, D.Skoupil, P.Vesely

Fermi motion effects in electroproduction of hypernuclei

NUCLEAR REACTIONS 12C(e, eK+)12B, Q2=0.06(GeV/c)2; calculated full electroproduction σ(θ) for the selected states of 12B hypernuclei, contributions from the transverse, longitudinal, and transverse-longitudinal interference parts to the full σ. Distorted-wave impulse approximation (DWIA) with two-component Chew-Goldberger-Low-Nambu-like (CGLN-like) form of the elementary amplitude which allows its use in a general reference frame moving with respect to the nucleus rest frame. Comparison with experimental results for 12B, 9Li, 16N hypernuclei electroproduction.

doi: 10.1103/PhysRevC.106.044609
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2022DE04      Phys.Rev. C 105, 024326 (2022)

G.De Gregorio, F.Knapp, N.Lo Iudice, P.Vesely

Spectroscopic properties of 4He within a multiphonon approach

NUCLEAR STRUCTURE 4He; calculated levels, J, π, charge radii, ground state energy, B(E1) distribution. Equation of motion phonon method (EMPM). Comparison to experimental data.

NUCLEAR REACTIONS 4He(γ, X), E=18-48 MeV; calculated σ of Giant Dipole Resonance excitation. Equation of motion phonon method (EMPM) calculations performed with up to 3 phonons. Comparison to experimental data.

doi: 10.1103/PhysRevC.105.024326
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2021DE30      Phys.Lett. B 821, 136636 (2021)

G.De Gregorio, F.Knapp, N.Lo Iudice, P.Vesely

Removal of the center of mass in nuclei and its effects on 4He

NUCLEAR STRUCTURE 4He; calculated excitation energies, J, π, n-phonon compositions, B(E1) using an equation of motion method for solving the nuclear eigenvalue problem.

doi: 10.1016/j.physletb.2021.136636
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2020DE03      Phys.Rev. C 101, 024308 (2020)

G.De Gregorio, F.Knapp, N.Lo Iudice, P.Vesely

Proper treatment of the Pauli principle in mirror nuclei within the microscopic particle(hole)-phonon scheme

NUCLEAR STRUCTURE 15,17O, 15N, 17F, 39Ca, 39K; calculated levels, J, π, magnetic dipole and electric quadrupole moments, log ft values for β decays, B(M1), B(E1), B(E2), B(E3) using the space spanned by states composed of a particle (hole) coupled to Tamm-Dancoff approximation (TDA) phonons with NNLOsat chiral potential, and with and without the proton-neutron potential. Comparison with experimental data.

doi: 10.1103/PhysRevC.101.024308
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2020PO04      Acta Phys.Pol. B51, 617 (2020)

J.Pokorny, G.De Gregorio, F.Knapp, N.Lo Iudice, P.Vesely

Effect of Λ Particle Phonon Coupling on the Energy Spectra of 5ΛHe and 17ΛO*

doi: 10.5506/APhysPolB.51.617
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2019DE02      Phys.Rev. C 99, 014316 (2019)

G.De Gregorio, F.Knapp, N.Lo Iudice, P.Vesely

Microscopic multiphonon approach to nuclei with a valence hole in the oxygen region

NUCLEAR STRUCTURE 15,16,21,22O, 15,21N; calculated levels, J, π, B(E1), B(M1), B(E2), B(E3), magnetic moments, β-decay logft values, and pygmy and giant dipole resonance (GDR) cross sections, and Phonon composition of selected states using microscopic multiphonon equation of motion method (EMPM) for odd nuclei with a valence hole. Comparison with experimental data.

RADIOACTIVITY 21N(β-); calculated logft and B(GT) using microscopic multiphonon equation of motion method (EMPM). Comparison with available experimental data.

doi: 10.1103/PhysRevC.99.014316
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2019VE01      Phys.Scr. 94, 014006 (2019)

P.Vesely, G.De Gregorio, J.Pokorny

Effect of a realistic three-body force on the spectra of medium-mass hypernuclei

NUCLEAR STRUCTURE 16,17O, 40,41Ca; calculated single-particle energies, radial density distributions, charge radii for regular and hypernuclei using NNN force.

doi: 10.1088/1402-4896/aaecfa
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2018DE11      Phys.Rev. C 97, 034311 (2018)

G.De Gregorio, F.Knapp, N.Lo Iudice, P.Vesely

Microscopic multiphonon approach to spectroscopy in the neutron-rich oxygen region

NUCLEAR STRUCTURE 22,23O, 23F; calculated levels, J, π, phonon composition of the low-lying states, weights of two-phonon components, E1 reduced strength distributions, E1 cross section, transition densities for low-lying 1- states, isoscalar versus isovector B(E1), Hartree-Fock levels for 23O and 23F. Equation of motion phonon method (EMPM), Tamm-Dancoff approximation (TDA), and Hartree-Fock method. Comparison with experimental data.

RADIOACTIVITY 23O(β-); calculated logft, B(GT) and B(F) strengths, using equation of motion phonon method (EMPM), Tamm-Dancoff approximation (TDA), and Hartree-Fock method. Comparison with experimental data.

doi: 10.1103/PhysRevC.97.034311
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2017DE07      Phys.Rev. C 95, 024306 (2017)

G.De Gregorio, J.Herko, F.Knapp, N.Lo Iudice, P.Vesely

Ground-state correlations within a nonperturbative approach

NUCLEAR STRUCTURE 4He, 16O, 40Ca; calculated ground-state energies, binding energies/nucleon, point proton radii, ground state correlations, two-phonon components of the ground state in 16O; investigated convergence properties versus the harmonic oscillator frequency and space dimensions. 4He, 16,24O, 34Si, 40,48Ca, 48,56,78Ni, 88Sr, 90Zr, 100,114,132Sn, 146Gd, 208Pb; calculated root-mean-square point proton radii, and compared with experimental values. Nonperturbative calculations using Hartree-Fock basis within an equation-of-motion phonon method with a nucleon-nucleon optimized chiral potential.

doi: 10.1103/PhysRevC.95.024306
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2017DE08      Phys.Rev. C 95, 034327 (2017)

G.De Gregorio, F.Knapp, N.Lo Iudice, P.Vesely

Low- and high-energy spectroscopy of 17O and 17F within a microscopic multiphonon approach

NUCLEAR STRUCTURE 17O, 17F; calculated complete set of levels, J, π, phonon amplitudes for selected states, B(E1), B(E2), quadrupole moments, magnetic dipole moments, log ft value for β decay of 17F ground-state. 16,17O, 17F; calculated cross sections for pygmy and giant dipole resonances. Microscopic multiphonon equation of motion method for odd nuclei, using TammDancoff phonons. Comparison with experimental data.

doi: 10.1103/PhysRevC.95.034327
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2017DE16      Phys.Scr. 92, 074003 (2017)

G.De Gregorio, F.Knapp, N.Lo Iudice, P.Vesely

A microscopic multiphonon approach to even and odd nuclei

NUCLEAR REACTIONS 132Sn, 208Pb, 16,17O, 17F(γ, X), E not given; calculated electric dipole σ. Comparison with experimental data.

doi: 10.1088/1402-4896/aa6fa2
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2016DE10      Phys.Rev. C 93, 044314 (2016)

G.De Gregorio, F.Knapp, N.Lo Iudice, P.Vesely

Self-consistent quasiparticle formulation of a multiphonon method and its application to the neutron-rich 20O nucleus

NUCLEAR STRUCTURE 20O; calculated energy levels, J, π, B(E2), B(E1), E1 cross section, pygmy and giant dipole resonances, 2-qp compositions of the first 2+ state, and two 1- TDA phonons. Bogoliubov quasiparticle formulation of an equation-of-motion multiphonon method (EMPM) with phonons obtained in Tamm-Dancoff approximation (TDA). Comparison with experimental values.

doi: 10.1103/PhysRevC.93.044314
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2016DE38      Phys.Rev. C 94, 061301 (2016)

G.De Gregorio, F.Knapp, N.Lo Iudice, P.Vesely

Microscopic multiphonon method for odd nuclei and its application to 17O

NUCLEAR STRUCTURE 17O; calculated energy levels, J, π, B(E2), electric quadrupole moment, magnetic dipole moment, pygmy and giant dipole resonance cross sections. New equation of motion phonon method for odd-A nuclei. Comparison with experimental data.

doi: 10.1103/PhysRevC.94.061301
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2016VE02      Nucl.Phys. A954, 260 (2016)

P.Vesely, E.Hiyama, J.Hrtankova, J.Mares

Sensitivity of Λ single-particle energies to the ΛN spin-orbit coupling and to nuclear core structure in p-shell and sd-shell hypernuclei

NUCLEAR STRUCTURE 12C, 16O, 20Ne, 28Si, 40Ca; calculated gs charge rms radius. Compared with published calculations using RMF and with data. 13C, 17O, 21Ne, 29Si, 41Ca; calculated Λ hypernuclei Λ single-particle energy, energy splitting with symmetric and anti-symmetric spin-orbit terms to the energy splitting; deduced contribution of spin-orbit term. Compared with RMF calculations and data. Mean-field model based on realistic two-body baryon interactions.

doi: 10.1016/j.nuclphysa.2016.05.013
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2015KN01      Phys.Rev. C 92, 054315 (2015)

F.Knapp, N.Lo Iudice, P.Vesely, F.Andreozzi, G.De Gregorio, A.Porrino

Dipole response in 208Pb within a self-consistent multiphonon approach

NUCLEAR STRUCTURE 208Pb; calculated pygmy and giant-dipole resonance cross sections, energy levels, B(E1), neutron skin radius using self-consistent multiphonon, equation of motion phonon method (EMPM). Comparison with experimental data.

doi: 10.1103/PhysRevC.92.054315
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2014AL04      Phys.Rev. C 89, 024308 (2014)

W.Almosly, B.G.Carlsson, J.Dobaczewski, J.Suhonen, J.Toivanen, P.Vesely, E.Ydrefors

Charged-current neutrino and antineutrino scattering off 116Cd described by Skyrme forces

NUCLEAR REACTIONS 116Cd(ν, ν), (ν-bar, ν-bar), E=5-80 MeV; calculated charged-current σ(E). 116Cd(ν, e-)116In, 116Cd(ν, e+)116Ag, E=5-80 MeV; calculated β strengths for Gamow-Teller transitions, positions of major and minor satellites of Gamow-Teller giant resonances, normalized averaged differential cross sections, IAS in 116In. Quasiparticle random-phase approximation in charge-changing mode (pnQRPA) using ten different Skyrme interactions, and parameterize Fermi-Dirac distributions of electron-neutrino and electron-antineutrino energies. Comparison with calculations using locally adjusted Bonn potential.

doi: 10.1103/PhysRevC.89.024308
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2014BI01      J.Phys.(London) G41, 025109 (2014)

D.Bianco, F.Knapp, N.Lo Iudice, P.Vesely, F.Andreozzi, G.De Gregorio, A.Porrino

A self-consistent study of multipole response in neutron-rich nuclei using a modified realistic potential

NUCLEAR STRUCTURE 16,18,20,22O, 116,124,130,132Sn; calculated neutron single-particle spectra, B(E1), strength functions. HFB, comparison with available data.

doi: 10.1088/0954-3899/41/2/025109
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2014KN01      Phys.Rev. C 90, 014310 (2014)

F.Knapp, N.Lo Iudice, P.Vesely, F.Andreozzi, G.De Gregorio, A.Porrino

Dipole response in 132Sn within a self-consistent multiphonon approach

NUCLEAR STRUCTURE 132Sn; calculated neutron and proton single-particle levels, pygmy resonances, dipole response, isovector and isoscalar E1 strengths, neutron particle-hole phonon composition, E1 transition density; strength fragmentation enhanced. Equation of motion phonon method and Tamm-Dancoff approximation with Hartree-Fock basis. Comparison with experimental results.

doi: 10.1103/PhysRevC.90.014310
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2012BI12      Phys.Rev. C 86, 044327 (2012)

D.Bianco, F.Knapp, N.Lo Iudice, F.Andreozzi, A.Porrino, P.Vesely

Electric dipole response in 208Pb within a new microscopic multiphonon approach

NUCLEAR STRUCTURE 208Pb; calculated dipole resonances, E1 σ(ω), B(E1) for giant and pygmy dipole resonances (GDR and PDR) using the microscopic multiphonon approach with a new equation of motion phonon method. Comparison with experimental data.

doi: 10.1103/PhysRevC.86.044327
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2012LO17      J.Phys.:Conf.Ser. 366, 012031 (2012)

N.Lo Iudice, D.Bianco, F.Knapp, F.Andreozzi, A.Porrino, P.Vesely

Multiphonon Approaches to Complex Spectroscopy

doi: 10.1088/1742-6596/366/1/012031
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2012VE05      Phys.Rev. C 86, 024303 (2012)

P.Vesely, J.Toivanen, B.G.Carlsson, J.Dobaczewski, N.Michel, A.Pastore

Giant monopole resonances and nuclear incompressibilities studied for the zero-range and separable pairing interactions

NUCLEAR STRUCTURE Z=8, 20, 28, 50, 82, A=18-262; N=8, 20, 28, 50, 82, 126, A=18-222; Z=50, A=96-172; Z=82, A=166-262; calculated neutron and proton pairing gaps, and incompressibility using SLy4 and UNEDF0 functionals, and zero-range separable pairing force. 112Sn; calculated QRPA monopole strength function for GMR. Quasiparticle random phase approximation (QPRA) on top of spherical Hartree-Fock-Bogoliubov solutions with iterative Arnoldi method. Comparison with experimental data. Influence of zero-range and separable pairing forces on monopole strengths.

doi: 10.1103/PhysRevC.86.024303
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2011KV02      Phys.Rev. C 84, 034303 (2011)

J.Kvasil, V.O.Nesterenko, W.Kleinig, P.-G.Reinhard, P.Vesely

General treatment of vortical, toroidal, and compression modes

NUCLEAR STRUCTURE 208Pb; calculated isoscalar and isovector vortical, toroidal, and compression 1- dipole resonances. Density functional theory with Skyrme force SLy6. Comparison with experimental data.

doi: 10.1103/PhysRevC.84.034303
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2010NE04      Int.J.Mod.Phys. E19, 558 (2010)

V.O.Nesterenko, J.Kvasil, P.Vesely, W.Kleinig, P.-G.Reinhard

Skyrme-random-phase-approximation description of spin-flip and orbital M1 giant resonances

NUCLEAR STRUCTURE 142,144,146,148,150,152Nd; calculated spin-flip and orbital M1 strength functions; deduced appearance of scissors mode. Self-consistent separable random-phase-approximation model (SRPA).

doi: 10.1142/S0218301310014972
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2010TO02      Phys.Rev. C 81, 034312 (2010)

J.Toivanen, B.G.Carlsson, J.Dobaczewski, K.Mizuyama, R.R.Rodriguez-Guzman, P.Toivanen, P.Vesely

Linear response strength functions with iterative Arnoldi diagonalization

NUCLEAR STRUCTURE 132Sn; calculated 0+, 1- and 2+ RPA strength functions for isoscalar (IS) and isovector (IV) transitions using iterative non-Hermitian Arnoldi diagonalization procedures.

doi: 10.1103/PhysRevC.81.034312
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2009KV01      Int.J.Mod.Phys. E18, 975 (2009)

J.Kvasil, P.Vesely, V.O.Nesterenko, W.Kleinig, P.-G.Reinhard, S.Frauendorf

Skyrme-random-phase-approximation description of E1 strength in 92-100Mo

NUCLEAR STRUCTURE 92,94,96,98,100Mo; calculated mass excess using Skyrme forces.

NUCLEAR REACTIONS 92,98,100Mo(γ, γ'), (γ, p), (γ, xn), E=5-30 MeV; calculated σ using self-consistent RPA with Skyrme forces. Compared to data.

doi: 10.1142/S0218301309013129
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2009VE07      Phys.Rev. C 80, 031302 (2009)

P.Vesely, J.Kvasil, V.O.Nesterenko, W.Kleinig, P.-G.Reinhard, V.Yu.Ponomarev

Skyrme random-phase-approximation description of spin-flip M1 giant resonance

NUCLEAR STRUCTURE 48Ca, 158Gd, 208Pb, 238U; calculated spin-flip M1 giant resonance energies and strength distributions using random-phase approximation (RPA) calculations and Skyrme energy functionals with a set of eight Skyrme parametrizations. Comparison with experimental data.

doi: 10.1103/PhysRevC.80.031302
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2008KL03      Phys.Rev. C 78, 044313 (2008)

W.Kleinig, V.O.Nesterenko, J.Kvasil, P.-G.Reinhard, P.Vesely

Description of the dipole giant resonance in heavy and superheavy nuclei within Skyrme random-phase approximation

NUCLEAR STRUCTURE 156,160Gd, 166,168Er, 176,178,180Hf, 182,184,186W, 170,172,174,176Yb, 186,188,190,192Os, 232Th, 234,236,238U, 242,248,254,262,270No, 264,274,284,294,304Fl, 280,288,294,304,312120; calculated isovector giant dipole resonance strengths, energies and widths. Skyrme random-phase approximation. Comparison with experimental data.

doi: 10.1103/PhysRevC.78.044313
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2008NE05      Int.J.Mod.Phys. E17, 89 (2008)

V.O.Nesterenko, W.Kleinig, J.Kvasil, P.Vesely, P.-G.Reinhard

TDDFT with Skyrme forces: effect of time-odd densities on electric giant resonances

NUCLEAR STRUCTURE 134,136,138,140,142,144,146,148,150,152,154,156,158Nd; calculated isovector E1, isoscalar E2 giant resonance strengths using the Skyrme forces. Comparisons with experimental data.

doi: 10.1142/S0218301308009586
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2007KV04      Phys.Atomic Nuclei 70, 1386 (2007)

J.Kvasil, R.G.Nazmitdinov, A.S.Sitdikov, P.Vesely

Octupole excitations at high spins in A ∼ 160 nuclei

NUCLEAR STRUCTURE 162Yb; calculated kinematic and dynamic moments of inertia, lowest quasineutron and quasiproton energies, and B(E1), B(E2), B(E3) from lowest one-phonon states using cranked Nilsson model and RPA.

doi: 10.1134/S106377880708011X
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2007NE04      Int.J.Mod.Phys. E16, 624 (2007)

V.O.Nesterenko, W.Kleinig, J.Kvasil, P.Vesely, P.-G.Reinhard

Giant dipole resonance in deformed nuclei: dependence on Skyrme forces

NUCLEAR STRUCTURE 150Nd, 238U; calculated GDR strength distributions. Separable RPA method, four Skyrme forces compared.

doi: 10.1142/S0218301307006071
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2006NE10      Phys.Rev.C 74, 064306 (2006)

V.O.Nesterenko, W.Kleinig, J.Kvasil, P.Vesely, P.-G.Reinhard, D.S.Dolci

Self-consistent separable random-phase approximation for Skyrme forces: Giant resonances in axial nuclei

NUCLEAR STRUCTURE 154Sm, 238U, 254No; calculated GDR and GQR strength distributions, related features. Self-consistent separable RPA.

doi: 10.1103/PhysRevC.74.064306
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