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NSR database version of May 20, 2024.

Search: Author = A.M.Lallena

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2022CO05      Phys.Rev. C 105, 034320 (2022)

G.Co, M.Anguiano, A.M.Lallena

Charge radii of Ca isotopes and correlations

NUCLEAR STRUCTURE 34,36,38,40,42,44,46,48,50,52,54,56,58,60Ca; calculated binding energies, isotope shifts, charge radii. Independent particle model based on Hartree-Fock plus Bardeen-Cooper-Schrieffer (HF+BCS) approach with inclusion of short- and long-range correlations. Comparison to experimental data and other model calculations.

doi: 10.1103/PhysRevC.105.034320
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2022CO07      Phys.Rev. C 105, 064316 (2022)

G.Co, M.Anguiano, A.M.Lallena

Effect of short- and long-range correlations on neutron skins of various neutron-rich doubly magic nuclei

NUCLEAR STRUCTURE 48Ca, 68Ni, 90Zr, 132Sn, 208Pb; calculated binding energies per nucleon, rms charge radii and neutron skins using independent particle model (IPM) with the D1S and D1M interactions. 208Pb; calculated levels, J, π, single-particle levels close to Fermi surface using self-consistent RPA with the D1S and D1M interactions. Comparison with experimental data.

doi: 10.1103/PhysRevC.105.064316
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2021CO08      Phys.Rev. C 104, 014313 (2021)

G.Co, M.Anguiano, A.M.Lallena

Tensor force and deformation in even-even nuclei

NUCLEAR STRUCTURE 64,66,68,70,72,74,76,78,80,82,84,86,88,90,92,94Se; 52Ar, 54Ca, 56Ti, 58Cr, 60Fe, 62Ni, 64Zn, 66Ge, 68Se, 70Kr; calculated total energies per nucleon for the prolate and oblate solutions, deformation parameters β2, charge radii and charge densities, splittings between centroid energies of spin-orbit partner multiplets, proton and neutron single-particle spectra of 60Fe and 90Se. HFBCS calculations for Z=34 isotopes and N=34 isotones based on the variational principle, using Slater determinants built with single-particle wave functions from Hartree-Fock (HF) method with pairing effects solved by BCS method, including Gogny type D1S and D1ST2a interactions containing tensor terms. Comparison with experimental data. 65,67,69,71,73,75,77,79,81,83,85,87,89,91,93Se, 51Cl, 53K, 55Sc, 57V, 59Mn, 61Co, 63Cu, 65Ga, 67As, 69Br; calculated J, π for the ground stated of odd-A Z=34 isotopes and N=34 isotones using Koopman's theorem with D1S and D1ST2a Gogny interactions. Comparison with experimental values. Discussed effects of tensor force on binding energies, charge radii, and distributions.

doi: 10.1103/PhysRevC.104.014313
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2019AN08      Phys.Rev. C 99, 034302 (2019)

M.Anguiano, A.M.Lallena, R.Bernard, G.Co

Neutron gas and pairing

NUCLEAR STRUCTURE 22O, 50,52,54,56,58,60,62,64,66,68,70,72,74,76,78,80,82,84,86,88,90Ni, 140,142,144,146,150,160,164,166,168,170,172Sn; calculated neutron rms radii, wave functions of neutron single particle states in 90Ni, neutron density distributions in 90Ni and 150Sn, and Hartree-Fock single particle energies and BCS occupation probabilities of single particle states in 86,88,90Ni. Hartree-Fock plus Bardeen-Cooper-Schrieffer (HF+BCS) calculations using D1S interaction. Discussed neutron gas effects in the description of nuclei with large neutron excess.

doi: 10.1103/PhysRevC.99.034302
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2019CO11      Int.J.Mod.Phys. E28, 1950054 (2019)

G.Co, M.Anguiano, A.M.Lallena

Shell closure at N=34 and the 48Si nucleus

NUCLEAR STRUCTURE 32,34,36,38,40,42,44,46,48Si; analyzed available data; deduced N=34 as a new magic number using Hartree-Fock plus Bardeen-Cooper-Schrieffer and Quasi-particle Random Phase Approximation calculations by consistently using the same finite-range interaction in all the three steps of our approach.

doi: 10.1142/S021830131950054X
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2018CO03      Phys.Rev. C 97, 034313 (2018)

G.Co, M.Anguiano, V.De Donno, A.M.Lallena

Matter distribution and spin-orbit force in spherical nuclei

NUCLEAR STRUCTURE 16,18,20,22,24O, 26,28,30Ne, 28,30,32Mg, 30,32,34Si, 30,32,34,36S, 38,40Ar, 34,36,38,40,42,44,46,48,50,52,54,56,58,60Ca, 42Ti, 44Cr, 46Fe; calculated binding energies per nucleon, charge root-mean-square radii, depletion fraction for proton and neutron density distributions, proton, neutron, and matter density distributions, charge distributions, spin orbit splitting. 34Si, 36S, 34,36Ca; calculated levels, J, π. 30,32,34Si, 30,32,34,36S, 34,36Ca; calculated energies of 4+ levels, and QRPA amplitudes of main configurations. 30Si; calculated elastic electron scattering σ(θ) for 300 MeV incident electron energy. Hartree-Fock plus Bardeen-Cooper-Schrieffer (HF+BCS) approach, with excited states from quasiparticle random phase approximation (QRPA), and using D1M, D1S, D1MTd, and D1ST2a interactions. Comparison with experimental data.

doi: 10.1103/PhysRevC.97.034313
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2017DE15      Phys.Rev. C 95, 054329 (2017)

V.De Donno, G.Co, M.Anguiano, A.M.Lallena

Pairing in spherical nuclei: Quasiparticle random-phase approximation calculations with the Gogny interaction

NUCLEAR STRUCTURE 16,18,20,22,24,26O, 40,42,44,46,48,50,52,54,56,58,60,62Ca, 30Ne, 32Mg, 34Si, 36S, 38Ar, 40Ca, 42Ti, 44Cr, 46Fe; calculated energies of 1-, 2+ and 3- levels, B(E2) for the first 2+ states, B(M1) values of 1+ states, occupation probabilities for 36S, 38Ar, 54,56Ca, energies and B(E1) of first three 1- states in 18O. 20O, 50Ca; calculated B(E1) and transition densities for the states identified as pygmy dipole resonances (PDR). Hartree-Fock, Bardeen, Cooper, and Schrieffer, and quasiparticle random-phase-approximation (HF+BCS+QRPA and QRPA(F)) calculations with finite-range interaction of Gogny type . Comparison with experimental data.

doi: 10.1103/PhysRevC.95.054329
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2016AN12      Eur.Phys.J. A 52, 183 (2016)

M.Anguiano, A.M.Lallena, G.Co, V.De Donno, M.Grasso, R.N.Bernard

Gogny interactions with tensor terms

NUCLEAR STRUCTURE 12C, 16O, 40Ca, 48Ca, 208Pb; calculated first 0- using DRPA with D1S, D1ST, D1M, D1MT interactions. 48,52Ca; calculated B(M1) strength energy distribution, energy gaps between neutron 1f7/2 and 2p3/2 states. 34Si, 36S, 40Ca; calculated energy differences between neutron 2p1/2 and 2p3/2 states. 134Te, 136Xe, 138Ba, 140Ce, 142Nd, 144Sm, 146Gd, 148Dy, 150Er, 152Yb; calculated proton sp state energy 2d5/2 and 1g7/2. DRPA (Discrete set of sp wavefunction RPA) with D1S, D1ST, D1M, D1MT, D1MT2a, D1MT2c interactions. Calculations compared with data.

NUCLEAR REACTIONS 48Ca, 90Zr, 208Pb(p, n), E not given; calculated energy distributions of GT strengths. DRPA (Discrete set of sp wavefunction RPA) with D1MT, D1MT2a, D1MT2c forces. Calculations compared to data.

doi: 10.1140/epja/i2016-16183-1
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2016AN13      Nucl.Phys. A955, 181 (2016)

M.Anguiano, R.N.Bernard, A.M.Lallena, G.Co, V.De Donno

Interplay between pairing and tensor effects in the N = 82 even-even isotone chain

NUCLEAR STRUCTURE 116Se, 118Kr, 120Sr, 122Zr, 124Mo, 126Ru, 128Pd, 130Cd, 132Sn, 134Te, 136Xe, 138Ba, 140Ce, 142Nd, 144Sm, 146Gd, 148Dy, 150Er, 152Yb, 154Hf; calculated binding energy, mass excess, mass and charge radii, occupation numbers using mean field (D1S and DIST2a Gogny forces). Compared with available data.

doi: 10.1016/j.nuclphysa.2016.06.013
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2016CO08      Eur.Phys.J. A 52, 145 (2016)

G.Co, V.De Donno, M.Anguiano, A.M.Lallena

Continuum Random Phase Approximation with finite-range interactions

NUCLEAR REACTIONS 16O(γ, x), E=0-120 MeV; calculated σ, 1-, 2+ multipole excitations contribution to σ. 4He(γ, x), E=5-150 MeV; calculated σ. Compared to data. 4He(e, e'), E not given (momentum transfer 200, 300, 400, 500 MeV/c); calculated longitudinal and transverse responses. Compared to data. 16O(ν, e-), E=60, 600 MeV; calculated charge-exchange σ(E, θ) and its components. Reformulated RPA (DFRPA and CRPA) with two different parameterization of Gogny interaction and using IPM (Independent Particle Model). When available, also results of Gazit et al. (2006) are presented.

NUCLEAR STRUCTURE 24O; calculated neutron-proton spin-dipole excitation strength using reformulated RPA (DFRPA and CRPA) and IPM (Independent Particle Model).

doi: 10.1140/epja/i2016-16145-7
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2016DE06      Phys.Rev. C 93, 034320 (2016)

V.De Donno, G.Co, M.Anguiano, A.M.Lallena

Self-consistent continuum random-phase approximation with finite-range interactions for charge-exchange excitations

NUCLEAR STRUCTURE 12C, 16,22,24O, 40,48Ca, 56,68Ni; calculated energy distributions of spin dipole (T-SD) response for 12C to 12N, 16,22,24O to 16,22,24F, 40,48Ca to 40,48Sc, 56,68Ni to 56,68Cu systems and T-GT strengths for 48Ca to 48Sc, 56Ni to 56C systems, T-F response for 12C to 12N, 16O to 16F, 40Ca to 40Sc and 56Ni 0to 56Cu systems, SD sum rule exhaustion for 22O to 22F and 22O to 22N. Calculations for charge-exchange excitations induced by Fermi (F), Gamow-Teller (GT) and spin-dipole (SD) operators. 16F; calculated levels, J, π relative to g.s. of 16O using D1M and D1MT2c interactions. Self-consistent continuum random-phase approximation (CRPA) theory extended to include charge-exchange excitations, with finite-range interaction in Hartree-Fock calculations. Comparison of CRPA results with those from discrete random-phase approximation (DRPA) calculations. Comparison with available experimental data.

doi: 10.1103/PhysRevC.93.034320
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2015CO12      Phys.Rev. C 92, 024314 (2015)

G.Co, V.De Donno, M.Anguiano, R.N.Bernard, A.M.Lallena

Electric quadrupole and magnetic dipole moments of odd nuclei near the magic ones in a self-consistent approach

NUCLEAR STRUCTURE 16,22,24O, 40,48,60Ca, 90Zr, 100,132Sn, 208Pb; calculated energies and B(E2) of first 2+ states, energies and B(M1) of low-lying 1+ states using D1M and D1S Gogny interactions, and comparison with experimental data. Hartree-Fock and random phase approximation (RPA) calculations.

NUCLEAR MOMENTS 15,21,23N, 17,23,25F, 15,17,21,23,25O, 39,47,59K, 41,49,61Sc, 39,41,47,49,59,61Ca, 89Y, 91Nb, 89,91Zr, 99,131In, 101,133Sb, 99,101,131,133Sn, 207Tl, 209Bi, 207,209Pb; calculated magnetic dipole and electric quadrupole moments of ground states and in some cases excited states using D1M and D1S Gogny interactions and 16,22,24O, 40,48,60Ca, 90Zr, 100,132Sn, 208Pb as core nuclei and associated single-particle states. Hartree-Fock random phase approximation (RPA), independent particle model (IPM) first-order perturbation theory, and finite Fermi systems (FFS) calculations.

doi: 10.1103/PhysRevC.92.024314
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2014DE01      Phys.Rev. C 89, 014309 (2014)

V.De Donno, G.Co, M.Anguiano, A.M.Lallena

Coulomb and spin-orbit interactions in random-phase approximation calculations

NUCLEAR STRUCTURE 16,22,24,28O, 40,48,52,60Ca, 48,56,68,78Ni, 100,114,116,132Sn, 90Zn, 208Pb; calculated difference between the RPA energies and level energies with and without Coulomb interaction, RPA energy differences by considering the spin-orbit interaction only, level energies of first 2+ and 3- states. Role of Coulomb and spin-orbit interactions in RPA calculations. Fully self-consistent framework of Hartree-Fock plus random-phase approximation including the spin-orbit and Coulomb terms of the interaction. Comparison with experimental data.

doi: 10.1103/PhysRevC.89.014309
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2014DE26      Phys.Rev. C 90, 024326 (2014)

V.De Donno, G.Co, M.Anguiano, A.M.Lallena

Charge-exchange excitations with finite-range interactions including tensor terms

NUCLEAR STRUCTURE 48Ca, 90Zr, 208Pb; calculated binding energies per nucleon, neutron-, proton-, and charge-rms radii, energies of single-particle states near the Fermi surfaces. Self-consistent Hartree-Fock plus random phase approximation model with Gogny-like finite-range interactions. Comparison with experimental data.

NUCLEAR REACTIONS 48Ca, 90Zr, 208Pb(p, n); calculated IAS sum rule values, centroids, energy and strength distributions for Fermi (F), Gamow-Teller (GT), spin-dipole (SD) and spin-quadrupole (SQ) excitations. Self-consistent Hartree-Fock plus random phase approximation model with Gogny-like finite-range interactions. Comparison with experimental data.

doi: 10.1103/PhysRevC.90.024326
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2013CO05      Phys.Rev. C 87, 034305 (2013)

G.Co, V.De Donno, M.Anguiano, A.M.Lallena

Pygmy and giant electric dipole responses of medium-heavy nuclei in a self-consistent random-phase approximation approach with a finite-range interaction

NUCLEAR STRUCTURE 16,22,24,28O, 40,48,52,60Ca, 48,56,68,78Ni, 90Zr, 100,114,116,132Sn, 208Pb; calculated photoabsorption σ(E), proton and neutron transition densities, centroids of pygmy dipole and giant dipole resonances (PDR, GDR). Gogny interaction in a self-consistent Hartree-Fock plus random phase approximation method. Comparison with experimental data, and for details of PDR and GDR structures.

doi: 10.1103/PhysRevC.87.034305
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2012AN14      Phys.Rev. C 86, 054302 (2012)

M.Anguiano, M.Grasso, G.Co, V.De Donno, A.M.Lallena

Tensor and tensor-isospin terms in the effective Gogny interaction

NUCLEAR STRUCTURE 16,22O, 40,48Ca, 132,140Sn; calculated neutron energy gap, single particle energies using effective Gogny interaction in mean-field calculations with the inclusion of tensor-isospin terms.

doi: 10.1103/PhysRevC.86.054302
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2012CO04      Phys.Rev. C 85, 024322 (2012)

G.Co, V.De Donno, P.Finelli, M.Grasso, M.Anguiano, A.M.Lallena, C.Giusti, A.Meucci, F.D.Pacati

Mean-field calculations of the ground states of exotic nuclei

NUCLEAR STRUCTURE 16,22,24,28O, 40,48,52,60Ca, 48,56,68,78Ni, 100,114,116,132Sn; calculated binding energies, single particle energies, rms charge radii, neutron skin thickness. Mean-field approach, nonrelativistic Hartree-Fock, relativistic Hartree calculations. Comparison with experimental data.

NUCLEAR REACTIONS 40,48,52,60Ca(e, e'p), (e, e), E=483.2 MeV; calculated reduced cross sections, elastic scattering cross sections, neutron, proton and matter distributions, Mean-field approach, nonrelativistic Hartree-Fock, relativistic Hartree calculations. Comparison with experimental data.

doi: 10.1103/PhysRevC.85.024322
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2012CO06      Phys.Rev. C 85, 034323 (2012)

G.Co, V.De Donno, M.Anguiano, A.M.Lallena

Magnetic excitations in nuclei with neutron excess

NUCLEAR REACTIONS 16,22,24,28O, 40,48,52,60Ca(e, e'), E not given; calculated B(M1), B(M2), B(M3) strengths as function of energy, transverse response of inelastic scattering for 1+ state. Investigated collective effects, and role of the tensor force. Self-consistent continuum and discrete random-phase approximation (CRPA and DRPA) calculations with finite-range interactions of Gogny type containing tensor-isospin terms.

doi: 10.1103/PhysRevC.85.034323
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2011AN17      Phys.Rev. C 83, 064306 (2011)

M.Anguiano, G.Co, V.De Donno, A.M.Lallena

Tensor effective interaction in self-consistent random-phase approximation calculations

NUCLEAR STRUCTURE 12C, 14,16,22,24,28O, 40,48,52,60Ca, 48,56,68,78Ni, 90Zr, 100,114,116,132Sn, 208Pb; calculated energies of lowest 0- states, binding energies, neutron and proton rms radii, neutron and proton single-particle energies, neutron and proton energy gaps, single particle levels near the Fermi surface, level energies, J, π for N=Z nuclei with isoscalar and isovector characters. Hartree-Fock and random-phase approximation calculations with finite-range Gogny forces, with and without a tensor-isospin term.

NUCLEAR REACTIONS 12C, 40Ca, 208Pb(e, e'), E not given; calculated transverse response as a function of the effective momentum transfer using RPA wave functions obtained in fully self-consistent approach. Comparison with experimental data.

doi: 10.1103/PhysRevC.83.064306
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2011DE13      Phys.Rev. C 83, 044324 (2011)

V.De Donno, G.Co, M.Anguiano, A.M.Lallena

Self-consistent continuum random-phase approximation calculations with finite-range interactions

NUCLEAR STRUCTURE 16,22,24O, 40,48,52Ca; calculated binding energies, charge and matter density distributions, photoabsorption cross sections, centroid energies for 1- dipole and 2+ quadrupole excitations, isoscalar and isovector strengths for 2+ states using self-consistent continuum random-phase approximation calculations with finite range interactions. Comparison with traditional discrete random phase approximation, continuum independent-particle model, phenomenological random phase approximation approach, and total photoabsorption cross-section experimental data.

doi: 10.1103/PhysRevC.83.044324
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2011DE27      Phys.Rev. C 84, 037306 (2011)

V.De Donno, M.Anguiano, G.Co, A.M.Lallena

Self-consistent continuum random-phase approximation calculations of 4He electromagnetic responses

NUCLEAR STRUCTURE 4He; calculated charge density distributions, total photoabsorption cross sections, proton and neutron separation energies, longitudinal and transverse quasielastic electron-scattering response. Self-consistent continuum random-phase approximation theory with D1S and D1M parameterization of the Gogny interaction and with the B1 interaction. Comparison with experimental data.

doi: 10.1103/PhysRevC.84.037306
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2010FL01      Phys.Rev. C 82, 027309 (2010)

X.Flechard, E.Lienard, O.Naviliat-Cuncic, D.Rodriguez, M.A.G.Alvarez, G.Ban, B.Carniol, D.Etasse, J.M.Fontbonne, A.M.Lallena, J.Praena

Measurement of the 8Li half-life

RADIOACTIVITY 8Li(β-)[from 7Li(d, p), E=1.98 MeV]; measured Eβ, Iβ, half-life. Comparison with previous measurements.

doi: 10.1103/PhysRevC.82.027309
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2009CH74      Physica Medica 25, 51 (2009)

U.Chica, M.Anguiano, A.M.Lallena

Benchmark of PENELOPE for low and medium energy X-rays

NUCLEAR REACTIONS 27Al, Cu(γ, X), E=30-300 keV; calculated X-ray beam attenuation using the Monte Carlo code PENELOPE; deduced half-value layer indexes. Comparison with available data.

doi: 10.1016/j.ejmp.2008.04.001
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2009CO11      Phys.Rev. C 80, 014308 (2009); Publishers note Phys.Rev. C 80, 019910 (2009)

G.Co, V.De Donno, C.Maieron, M.Anguiano, A.M.Lallena

Evolution of the pygmy dipole resonance in nuclei with neutron excess

NUCLEAR STRUCTURE 16,22,24,28O, 40,48,52Ca, 90,98,104,108,110Zr, 108,114,116,128,132Sn, 208Pb; calculated B(E1) strengths, transition densities and collectivity indices for pygmy dipole resonances (PDR) using a random phase approximation phenomenological approach.

doi: 10.1103/PhysRevC.80.014308
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2009DE14      Phys.Rev. C 79, 044311 (2009)

V.De Donno, G.Co, C.Maieron, M.Anguiano, A.M.Lallena, M.Moreno Torres

Low-lying magnetic excitations of doubly-closed-shell nuclei and nucleon-nucleon effective interactions

NUCLEAR STRUCTURE 12C, 16O, 40,48Ca, 208Pb; calculated energies of low-lying unnatural-parity magnetic states and isospin doublets using RPA theory. Test of the validity of the finite-range Gogny D1 interaction. Comparison with experimental data.

NUCLEAR REACTIONS 12C, 16O, 40,48Ca, 208Pb(e, e'), E not given; calculated electromagnetic responses, proton and neutron contributions to transition densities using RPA theory. Comparison with experimental data.

doi: 10.1103/PhysRevC.79.044311
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2007MA18      Phys.Rev. C 75, 034604 (2007)

M.Martini, G.Co, M.Anguiano, A.M.Lallena

Superscaling in electroweak excitation of nuclei

NUCLEAR REACTIONS 12C, 16O, 40Ca(e, e'), E ≈ 700-1200 MeV; 16O(ν, e), E=300 MeV; calculated σ(E, θ). 16O(ν, e), E=20-300 MeV; calculated total σ. Modified relativistic Fermi gas scaling functions.

doi: 10.1103/PhysRevC.75.034604
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2006AN22      Phys.Rev. C 74, 044603 (2006)

M.Anguiano, G.Co, A.M.Lallena

Proton emission induced by polarized photons

NUCLEAR REACTIONS 12C, 16O, 40Ca(polarized γ, p), E=80, 150 MeV; calculated polarization observables; deduced sensitivity to final-state interactions, meson exchange currents, and short-range correlations.

doi: 10.1103/PhysRevC.74.044603
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2004AN22      Nucl.Phys. A744, 168 (2004)

M.Anguiano, G.Co, A.M.Lallena

Photo-emission of two protons from nuclei

NUCLEAR REACTIONS 16O(γ, 2p), E=100, 215 MeV; 12C, 40Ca(γ, 2p), E=100 MeV; calculated σ(E, θ), short-range correlation effects.

doi: 10.1016/j.nuclphysa.2004.08.011
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2003AN15      J.Phys.(London) G29, 1119 (2003)

M.Anguiano, G.Co, A.M.Lallena

A model for two-proton emission induced by electron scattering

NUCLEAR REACTIONS 12C, 16O, 40Ca(e, e'2p), E=800 MeV; calculated σ(E, θ), longitudinal and transverse response, related features.

doi: 10.1088/0954-3899/29/6/314
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2002AN25      Ann.Phys.(New York) 296, 235 (2002)

M.Anguiano, G.Co, A.M.Lallena, S.R.Mokhtar

Short-Range Correlations and Meson Exchange Currents in Photonucleon Emission

NUCLEAR REACTIONS 16O(γ, n), (γ, p), E=60-196 MeV; calculated σ(θ); deduced sensitivity to short-range correlation effects. Comparison with data.

doi: 10.1006/aphy.2002.6228
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2001CO10      Ann.Phys.(New York) 287, 101 (2001)

G.Co, A.M.Lallena

Correlated Model for Quasi-Elastic Responses in Finite Nuclear Systems

NUCLEAR STRUCTURE 16O, 40Ca; calculated charge density distributions, response functions, short-range correlation effects.

NUCLEAR REACTIONS 16O(e, e'), E=700-1200 MeV; calculated σ(θ=32°).

doi: 10.1006/aphy.2000.6098
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2001MO42      Ann.Phys.(New York) 292, 67 (2001)

S.R.Mokhtar, M.Anguiano, G.Co, A.M.Lallena

Short-Range Correlations in Semi-Exclusive Electron Scattering Experiments

NUCLEAR REACTIONS 16O(e, e'p), E not given; calculated σ(E, θ), response functions; deduced short-range correlation effects. Comparison with data.

doi: 10.1006/aphy.2001.6156
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2000MO31      Phys.Rev. C62, 067304 (2000)

S.R.Mokhtar, G.Co, A.M.Lallena

Short-Range Correlations in Low-Lying Nuclear Excited States

NUCLEAR STRUCTURE 16O, 48Ca, 208Pb; calculated transition strengths to low-lying states, role of short-range correlations.

doi: 10.1103/PhysRevC.62.067304
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1999AM06      Phys.Rev. C60, 014602 (1999)

J.E.Amaro, A.M.Lallena, J.A.Caballero

Analysis of Meson Exchange and Isobar Currents in (e, e'p) Reactions from 16O

NUCLEAR REACTIONS 16O(e, e'p), E not given; calculated response functions; deduced meson exchange current, isobar current effects.

doi: 10.1103/PhysRevC.60.014602
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1999BA33      Phys.Rev. C59, 2603 (1999)

E.Bauer, A.M.Lallena

Quasielastic Electron Scattering from Nuclei: Random-phase vs ring approximations

NUCLEAR REACTIONS 40Ca(e, e'), E not given; calculated transverse response vs momentum transfer; deduced role of RPA exchange terms.

doi: 10.1103/PhysRevC.59.2603
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1999BA88      Phys.Rev. C60, 044615 (1999)

P.J.Barneo, J.E.Amaro, A.M.Lallena

Nuclear Currents Based on the Integral Form of the Continuity Equation

NUCLEAR STRUCTURE 16O, 39K; calculated transitions matrix elements; deduced nuclear electromagnetic current conservation features.

doi: 10.1103/PhysRevC.60.044615
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1999BB26      Nuovo Cim. 112A, 1117 (1999)

A.R.Bautista, G.Co, A.M.Lallena

Spin-Orbit Interaction in Hartree-Fock Calculations

NUCLEAR STRUCTURE 12C, 16O, 40,48Ca, 208Pb; calculated spin-orbit splitting. Hartree-Fock approach.

doi: 10.1007/BF03035916
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1998AM07      Phys.Rev. C57, 3473 (1998)

J.E.Amaro, A.M.Lallena, G.Co, A.Fabrocini

Model of Short-Range Correlations in the Charge Response

doi: 10.1103/PhysRevC.57.3473
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1998BA18      Phys.Rev. C57, 1681 (1998)

E.Bauer, A.M.Lallena

Effective Interaction in Quasielastic Electron Scattering Calculations

NUCLEAR REACTIONS 40Ca(e, e'), E not given; calculated transverse response functions; deduced effective interaction role.

doi: 10.1103/PhysRevC.57.1681
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1998CO01      Phys.Rev. C57, 145 (1998)

G.Co, A.M.Lallena

Two-Nucleon Emission in the Longitudinal Response

doi: 10.1103/PhysRevC.57.145
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1998CO36      Nuovo Cim. 111A, 527 (1998)

G.Co, A.M.Lallena

Tensor Interaction in Hartree-Fock Calculations

NUCLEAR STRUCTURE 4He, 12,14C, 16O, 40,48Ca, 208Pb; calculated binding energies, single-particle energies, proton densities; deduced tensor interaction role. Hartree-Fock calculations.


1997AM04      Nucl.Phys. A623, 529 (1997)

J.E.Amaro, A.M.Lallena, J.Nieves

Radiative Pion Capture in Nuclei: A continuum shell-model approach

NUCLEAR REACTIONS 12C, 16O, 40Ca(π-, γ), E not given; analyzed γ spectra; deduced π-p → γn reaction related features, two-particle two-hole correlations role. Continuum shell model approach.

doi: 10.1016/S0375-9474(97)00187-5
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1997LA09      Nucl.Phys. A615, 325 (1997)

A.M.Lallena

Meson-Exchange Contributions to the Nuclear Charge Operator

NUCLEAR REACTIONS 16O, 208Pb, 12C, 40,48Ca(e, e'X), E not given; calculated longitudinal, transverse form facotrs; deduced meson exchange currents role.

doi: 10.1016/S0375-9474(97)00023-7
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1996AM02      Phys.Rev. C53, 1430 (1996)

J.E.Amaro, B.Ameziane, A.M.Lallena

Continuity Equation in Electron Scattering from Nuclei

NUCLEAR STRUCTURE 16O, 39K; calculated (e, e') reaction associated continuity equation validity related features for certain transitions.

doi: 10.1103/PhysRevC.53.1430
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1996AM04      Nucl.Phys. A602, 263 (1996)

J.E.Amaro, J.A.Caballero, T.W.Donnelly, A.M.Lallena, E.Moya de Guerra, J.M.Udias

Parity Violation in Quasielastic Electron Scattering from Closed-Shell Nuclei

NUCLEAR REACTIONS 16O, 40Ca, 208Pb(e, e'X), E not given; calculated response functions, parity-violating asymmetries sensitivity to nucleon form factors.

doi: 10.1016/0375-9474(96)00034-6
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1996AN07      Phys.Rev. C53, 3155 (1996)

M.Anguiano, A.M.Lallena, G.Co

Mean-Field Calculations of Quasielastic Responses in 4He

NUCLEAR REACTIONS 4He(e, e'X), E not given; calculated longitudinal, transverse response functions. Mean-field model.

doi: 10.1103/PhysRevC.53.3155
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1994AM01      Nucl.Phys. A567, 701 (1994)

J.E.Amaro, C.Garcia-Recio, A.M.Lallena

Meson-Exchange Current Effects in Elastic Electron Scattering from Polarized Nuclei

NUCLEAR REACTIONS 11B, 13C, 15N, 17O, 39K(polarized e, e), E not given; calculated magnetic and Coulomb form factors, response functions. Meson exchange effects, polarized target.

doi: 10.1016/0375-9474(94)90323-9
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1994AM06      Nucl.Phys. A578, 365 (1994)

J.E.Amaro, G.Co, A.M.Lallena

Meson-Exchange Currents in Quasi-Elastic Electron Scattering from 12C and 40Ca Nuclei

NUCLEAR REACTIONS 12C, 40Ca(e, e'), E not given; calculated quasielastic transverse response functions. Meson exchange currents, isobar contributions.

doi: 10.1016/0375-9474(94)90752-8
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1994AM17      Int.J.Mod.Phys. E3, 735 (1994)

J.E.Amaro, A.M.Lallena, G.Co

Finite Size Effects in the Electromagnetic Quasi-Elastic Responses of Nuclei

NUCLEAR STRUCTURE 12C, 40Ca; calculated longitudinal, transverse response functions; deduced finite nuclear size effects role. Improved Fermi gas, shell models comparison.

doi: 10.1142/S0218301394000188
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1994DE26      Phys.Rev. C50, 2384 (1994)

F.A.de Saavedra, A.M.Lallena

In-Medium Scaling Law and Electron Scattering from High-Spin States in 208Pb

NUCLEAR STRUCTURE 208Pb; calculated level energy, wave function modifications; deduced in-medium scaling law related features.

NUCLEAR REACTIONS 208Pb(e, e'), E not given; calculated form factors; deduced in-medium scaling law related features.

doi: 10.1103/PhysRevC.50.2384
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1994MO19      Nucl.Phys. A576, 553 (1994)

S.Moraghe, J.E.Amaro, C.Garcia-Recio, A.M.Lallena

Meson-Exchange Current Effects in Inelastic Electron Scattering from Polarized Nuclei

NUCLEAR REACTIONS 11B, 13C, 15N, 17O, 39K(polarized e, e'), E not given; calculated response functions. Shell model wave functions, meson exchange effects, different target polarizations.

doi: 10.1016/0375-9474(94)90744-7
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1993AM01      J.Phys.(London) G19, 99 (1993)

J.E.Amaro, A.M.Lallena

Electroexcitation of Magnetic States in 48Ca

NUCLEAR REACTIONS 48Ca(e, e'), E not given; calculated form factors. RPA.

doi: 10.1088/0954-3899/19/1/007
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1993AM11      Ann.Phys.(New York) 221, 306 (1993)

J.E.Amaro, G.Co, A.M.Lallena

Electromagnetic Quasi-Elastic Responses in 12C

NUCLEAR REACTIONS 12C(e, e), E not given; calculated longitudinal, transverse responses. Continuum shell model, meson exchange currents.

doi: 10.1006/aphy.1993.1013
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1993LA12      Phys.Rev. C48, 344 (1993)

A.M.Lallena

ρ-Meson Effective Mass and Electron Scattering in Medium Nuclei

NUCLEAR REACTIONS 48Ca(e, e'), E not given; calculated transverse form factors. 208Pb(e, e'), E not given; calculated transverse form factors ratio; deduced ρ-meson effective mass role.

doi: 10.1103/PhysRevC.48.344
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1992AM01      Nucl.Phys. A537, 585 (1992)

J.E.Amaro, A.M.Lallena

Meson-Exchange Current Effects in the Magnetic Electroexcitation of 48Ca

NUCLEAR REACTIONS 48Ca(e, e'), E not given; calculated form factors. Pure 1p1h, RPA excitations, meson exchange currents.

doi: 10.1016/0375-9474(92)90369-U
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1992AM02      Phys.Lett. 277B, 249 (1992)

J.E.Amaro, G.Co, E.M.V.Fasanelli, A.M.Lallena

Meson Exchange Currents in the Quasi-Elastic Response of 12C

NUCLEAR STRUCTURE 12C; calculated longitudinal, transverse response functions.

doi: 10.1016/0370-2693(92)90743-N
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1992AM09      Mod.Phys.Lett. A 7, 3029 (1992)

J.E.Amaro, A.M.Lallena

Magnetic states in 48Ca and the tensor part of the residual nucleon-nucleon interaction

NUCLEAR STRUCTURE 48Ca; calculated levels, J, π, electromagnetic form factors; deduced strength of tensor part of residual interaction. RPA approach, comparisons with data.

doi: 10.1142/S021773239200241X
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1992HI04      Phys.Rev. C45, 1098 (1992)

N.M.Hintz, A.M.Lallena, A.Sethi

Modifications of the Tensor and Spin-orbit Interactions and the Stretched States in 208Pb

NUCLEAR REACTIONS 208Pb(p, p'), E=318 MeV; analyzed σ(θ). 208Pb(e, e'), E=335.4 MeV; analyzed σ(θ); deduced quenching factors, effective masses.

doi: 10.1103/PhysRevC.45.1098
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1991AM02      Phys.Lett. 261B, 229 (1991)

J.E.Amaro, A.M.Lallena

On the Quenching of the (e, e') Form Factor of the M1 Transition to the 10.23 MeV State in 48Ca

NUCLEAR REACTIONS 48Ca(e, e'), E not given; calculated form factor; deduced momentum independent quenching factor. RPA.

doi: 10.1016/0370-2693(91)90319-L
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1990CO10      Nucl.Phys. A510, 139 (1990)

G.Co, A.M.Lallena

The Role of the Spin-Dependent Part of the Nucleon-Nucleon Effective Interaction in the Excitation of Magnetic States of 208Pb

NUCLEAR REACTIONS 208Pb(e, e'), E not given; calculated form factors; deduced effective interaction. Finite Fermi systems, Landau-Migdal theory.

doi: 10.1016/0375-9474(90)90292-T
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1988LA27      Nucl.Phys. A489, 70 (1988)

A.M.Lallena

The Role of the Tensor Force for High-Spin States of Unnatural Parity in 208Pb

NUCLEAR STRUCTURE 208Pb; calculated levels; deduced tensor force role.

NUCLEAR REACTIONS 208Pb(e, e'), E not given; calculated form factors.

doi: 10.1016/0375-9474(88)90053-X
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1987CO24      Nucl.Phys. A469, 684 (1987)

G.Co, A.M.Lallena, T.W.Donnelly

Nucleon Emission Induced by Polarized Electrons at Low Momentum Transfer

NUCLEAR REACTIONS 16O(e, e'p), E=200 MeV; calculated σ(E(e'), θp, θ(e')). 16O(polarized e, e'p), E=200 MeV; calculated response function. 40Ca(γ, X), E ≤ 60 MeV; calculated photoabsorption σ(E). 40Ca(e, e'X), E not given; calculated inclusive σ(θ(e)) vs fragment momentum, transfer momentum. 40Ca(e, e'p), E=183.3 MeV; calculated σ(E(e'), θ(e'), θp). 40Ca(e, e'p), E=200 MeV; calculated σ(θ(e), θ(p), E(e')). 16O, 40Ca deduced giant resonance characteristics.

doi: 10.1016/0375-9474(87)90021-2
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1986KR03      Nucl.Phys. A448, 685 (1986)

S.Krewald, A.M.Lallena, J.S.Dehesa

Particle-Vibration Coupling and Exchange-Current Effects on the Magnetic Electron-Scattering Form Factor

NUCLEAR REACTIONS 208Pb, 16O(e, e'), E not given; calculated form factors; deduced exchange currents role. Particle-vibration coupling.

doi: 10.1016/0375-9474(86)90437-9
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1986LA15      Phys.Rev. C34, 332 (1986)

A.M.Lallena, J.S.Dehesa, S.Krewald

Nuclear Macroscopic Properties and Pionic Exchange Currents in (e, e') Processes

NUCLEAR REACTIONS 16O, 208Pb(e, e'), E not given; calculated form factors. High spin magnetic stretched states, meson exchange currents, effective pion propagator approximation.

doi: 10.1103/PhysRevC.34.332
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1986LA24      Phys.Lett. 176B, 9 (1986)

A.M.Lallena, J.S.Dehesa

Mesonic and Particle-Vibration Effects on the Form Factor of the Process (e, e')48Ca(1+;10.23 MeV)

NUCLEAR STRUCTURE 48Ca; calculated 1+ state particle-hole amplitudes, energy. RPA.

NUCLEAR REACTIONS 48Ca(e, e'), E not given; calculated electroexcitation form factor. Impulse approximation, meson exchange currents, RPA wave functions.

doi: 10.1016/0370-2693(86)90915-9
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1984LA28      Phys.Lett. 146B, 294 (1984)

A.M.Lallena, J.S.Dehesa, S.Krewald

Meson Exchange Current Effects in the Electroexcitation of Magnetic States in Closed Shell Nuclei

NUCLEAR REACTIONS 16O, 208Pb(e, e'), E not given; calculated transverse form factors. Microscopic approach, meson exchange effects.

doi: 10.1016/0370-2693(84)91699-X
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