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NSR database version of May 24, 2024.

Search: Author = S.Marcos

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2024MA09      Eur.Phys.J. A 60, (2024)

S.Marcos, R.Niembro, M.Lopez-Quelle

Relativistic effects on the kink of nuclear charge radii in lead

NUCLEAR STRUCTURE 202,204,206,208,210,212,214Pb; calculated the nuclear charge radii of lead isotopes in the relativistic mean field approximation framework, using the parameter set NL3*; deduced the small component of the single-particle Dirac spinors plays an essential role in the kink formation through its effects on the single-particle central potential.

doi: 10.1140/epja/s10050-024-01304-8
Citations: PlumX Metrics


2018LO05      Nucl.Phys. A971, 149 (2018)

M.Lopez-Quelle, S.Marcos, R.Niembro, L.N.Savushkin

Tensor force effect on the evolution of single-particle energies in some isotopic chains in the relativistic Hartree-Fock approximation

NUCLEAR STRUCTURE 40,42,44,46,48Ca;116,118,120,122,124,126,128,130,132Sn; calculated sp energy, J of orbitals in the SO (Spin-Orbit) and PSO (Pseudo-Spin Orbit) doublets using nonlinear self-consistent relativistic Hartree-Fock approximation combined with BCS, with and without pairing correlations; deduced mutual dependence on the evolution of the shell closure gap Z=50, pairing correlations playing in opposite direction of the tensor term of one-pion-exchange force.

doi: 10.1016/j.nuclphysa.2018.01.012
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2012MA61      Phys.Atomic Nuclei 75, 1486 (2012)

S.Marcos, M.Lopez-Quelle, R.Niembro, L.N.Savushkin

Nuclear relativistic hartree-fock approximation with effective pions

NUCLEAR STRUCTURE 208Pb, 132Sn, 90Zr, 48Ca, 22O; calculated level energies, J, π; deduced πN PS coupling. Shell model calculations. Comparison with available data.

doi: 10.1134/S1063778812110166
Citations: PlumX Metrics


2012NI07      Phys.Atomic Nuclei 75, 269 (2012)

R.Niembro, S.Marcos, M.Lopez-Quelle, L.N.Savushkin

Isotopic dependence of the nuclear charge radii and binding energies in the relativistic Hartree-Fock formalism

NUCLEAR STRUCTURE 16O, 40,48Ca, 84Sr, 116,124,132Sn, 204,208,214Pb; calculated nuclear charge radius, energy per nucleon, isotopic evolution of charge radii. Relativistic nonlinear models, Hartree and Hartree-Fock approximations.

doi: 10.1134/S1063778812020159
Citations: PlumX Metrics


2010DE25      Eur.Phys.J. A 43, 369 (2010)

B.Desplanques, S.Marcos

New insights on pseudospin doublets in nuclei

doi: 10.1140/epja/i2010-10921-3
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2008MA40      Eur.Phys.J. A 37, 251 (2008)

S.Marcos, M.Lopez-Quelle, R.Niembro, L.N.Savushkin

Pseudospin symmetry as an accidental symmetry in the relativistic framework

NUCLEAR STRUCTURE 40Ca, 208Pb; calculated pseudospin doublets energies, configurations, related features using relativistic framework of the Dirac equation.

doi: 10.1140/epja/i2008-10619-1
Citations: PlumX Metrics


2007MA93      Eur.Phys.J. A 34, 429 (2007)

S.Marcos, M.Lopez-Quelle, R.Niembro, L.N.Savushkin

Pseudospin symmetry in the Dirac phenomenology

doi: 10.1140/epja/i2007-10515-2
Citations: PlumX Metrics


2006SA31      Phys.Atomic Nuclei 69, 1233 (2006)

L.N.Savushkin, S.Marcos, M.Lopez-Quelle, R.Niembro

Pseudospin Symmetry in Finite Nuclei

doi: 10.1134/S1063778806070222
Citations: PlumX Metrics


2005LO11      J.Phys.(London) G31, S1911 (2005)

M.Lopez-Quelle, L.N.Savushkin, S.Marcos, R.Niembro

Pseudospin symmetry in finite nuclei within the relativistic Hartree-Fock framework

NUCLEAR STRUCTURE 208Pb; calculated pseudospin doublets energies, configurations, related features. Relativistic Hartree-Fock framework.

doi: 10.1088/0954-3899/31/10/100
Citations: PlumX Metrics


2005MA82      J.Phys.(London) G31, S1551 (2005)

S.Marcos, M.Lopez-Quelle, R.Niembro, L.N.Savushkin

The pseudospin symmetry in atomic nuclei

NUCLEAR STRUCTURE 208Pb; calculated pseudospin doublet energies, related features. Relativistic mean-field framework.

doi: 10.1088/0954-3899/31/10/030
Citations: PlumX Metrics


2005MB03      Eur.Phys.J. A 26, 253 (2005)

S.Marcos, V.N.Fomenko, M.Lopez-Quelle, R.Niembro, L.N.Savushkin

The spin and pseudospin symmetries in the relativistic formalism: Similarities and differences

NUCLEAR STRUCTURE 40Ca; calculated neutron wave functions, role of spin and pseudospin symmetries, symmetry breaking effects.

doi: 10.1140/epja/i2005-10177-0
Citations: PlumX Metrics


2004MA40      J.Phys.(London) G30, 703 (2004)

S.Marcos, L.N.Savushkin, V.N.Fomenko, M.Lopez-Quelle, R.Niembro

Description of nuclear systems within the relativistic Hartree-Fock method with zero-range self-interactions of the scalar field

NUCLEAR STRUCTURE 16O, 40,48Ca, 90Zr, 208Pb; calculated binding energies, radii, charge distributions, single-particle energy levels. Hartree-Fock method, zero-range self-interactions.

doi: 10.1088/0954-3899/30/6/002
Citations: PlumX Metrics


2004MA45      Eur.Phys.J. A 20, 443 (2004)

S.Marcos, M.Lopez-Quelle, R.Niembro, L.N.Savushkin

Origin of the pseudospin symmetry in the relativistic formalism

NUCLEAR STRUCTURE 40Ca, 208Pb; calculated wave functions, pseudospin symmetry features. Extended Dirac equation.

doi: 10.1140/epja/i2003-10160-9
Citations: PlumX Metrics


2003LO12      Nucl.Phys. A727, 269 (2003)

M.Lopez-Quelle, L.N.Savushkin, S.Marcos, P.Bernardos, R.Niembro

Pseudo-spin-orbit potential in the relativistic Hartree-Fock formalism

NUCLEAR STRUCTURE 40,48Ca; calculated pseudo-spin-orbit potentials, wave functions. Relativistic Hartree-Fock approximation.

doi: 10.1016/j.nuclphysa.2003.07.012
Citations: PlumX Metrics


2003MA21      Eur.Phys.J. A 17, 173 (2003)

S.Marcos, M.Lopez-Quelle, R.Niembro, L.N.Savushkin, P.Bernardos

Reliability of the pseudospin symmetry in atomic nuclei

NUCLEAR STRUCTURE 40Ca; calculated single-particle energies, pseudospin symmetry features.

doi: 10.1140/epja/i2002-10150-5
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2001BE03      J.Phys.(London) G27, 147 (2001)

P.Bernardos, V.N.Fomenko, S.Marcos, R.Niembro, M.Lopez-Quelle, L.N.Savushkin

Application of an Effective Gauge-Invariant MOdel to Nuclear Matter in the Relativistic Hartree-Fock Approximation

doi: 10.1088/0954-3899/27/2/301
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2001MA49      Phys.Lett. 507B, 135 (2001)

S.Marcos, L.N.Savushkin, M.Lopez-Quelle, R.Niembro, P.Bernardos

On the Relativistic Origin of the Kink Effect in the Chain of Pb Isotopes

NUCLEAR STRUCTURE 206,208,210Pb; calculated charge radii; deduced kink effect mechanism. Relativistic mean field theory.

doi: 10.1016/S0370-2693(01)00460-9
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2001MA65      Phys.Lett. 513B, 30 (2001)

S.Marcos, M.Lopez-Quelle, R.Niembro, L.N.Savushkin, P.Bernardos

On the Sufficient Conditions for the Pseudospin Symmetry in Relativistic Models

NUCLEAR STRUCTURE 40Ca, 208Pb; calculated single-particle energies, effect of pseudospin symmetry breaking term. Relativistic Hartree approximation.

doi: 10.1016/S0370-2693(01)00737-7
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2001NI14      Phys.Rev. C64, 055802 (2001)

R.Niembro, P.Bernardos, M.Lopez-Quelle, S.Marcos

Neutrino Cross Section and Mean Free Path in Neutron Stars in the Framework of the Dirac-Hartree-Fock Approximation

doi: 10.1103/PhysRevC.64.055802
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2000BE34      Phys.Rev. C62, 024314 (2000)

P.Bernardos, R.J.Lombard, M.Lopez-Quelle, S.Marcos, R.Niembro

Derivative Coupling Model Description of Nuclear Matter in the Dirac-Hartree-Fock Approximation

doi: 10.1103/PhysRevC.62.024314
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2000LO07      Phys.Rev. C61, 064321 (2000)

M.Lopez-Quelle, N.Van Giai, S.Marcos, L.N.Savushkin

Spin-Orbit Splitting in Nonrelativistic and Relativistic Self-Consistent Models

NUCLEAR STRUCTURE O, Ca, Sn; calculated proton spin-orbit splitting vs mass. Relativistic and nonrelativistic mean field approaches, comparisons with data.

doi: 10.1103/PhysRevC.61.064321
Citations: PlumX Metrics


2000MA91      Phys.Rev. C62, 054309 (2000)

S.Marcos, L.N.Savushkin, M.Lopez-Quelle, P.Ring

Pseudo Spin-Orbit Potential in Relativistic Self-Consistent Models

NUCLEAR STRUCTURE 40Ca; calculated pseudo spin-orbit potential, level splitting; deduced role of scalar meson mass, compressibility modulus. Relativistic Hartree formalism.

doi: 10.1103/PhysRevC.62.054309
Citations: PlumX Metrics


1998MA10      Phys.Rev. C57, 1178 (1998)

S.Marcos, R.J.Lombard, J.Mares

Binding Energy of Double Λ Hypernuclei in Relativistic Mean Field Theory

NUCLEAR STRUCTURE 6He, 10Be, 13B, 18O, 42Ca, 92Zr, 210Pb; calculated double Λ hypernuclei binding energies. Relativistic mean field approach.

doi: 10.1103/PhysRevC.57.1178
Citations: PlumX Metrics


1998NI14      J.Phys.(London) G24, 1945 (1998)

R.Niembro, V.N.Fomenko, L.N.Savushkin, M.Lopez-Quelle, S.Marcos, P.Bernardos

Nuclear Matter Calculations with a Pseudoscalar-Pseudovector Chiral Model

doi: 10.1088/0954-3899/24/10/010
Citations: PlumX Metrics


1997FO10      Yad.Fiz. 60, No 12, 2149 (1997); Phys.Atomic Nuclei 60, 1967 (1997)

V.N.Fomenko, S.Marcos, P.Ring, L.N.Savushkin

Application of the Effective Gauge-Invariant Nuclear Lagrangian to Nuclear Matter and Finite Nuclei

NUCLEAR STRUCTURE 16O, 40,48Ca, 90Zr, 208Pb; calculated charge densities, single-particle spectra. Chiral approach.


1997SA02      Phys.Rev. C55, 167 (1997)

L.N.Savushkin, S.Marcos, M.L.Quelle, P.Bernardos, V.N.Fomenko, R.Niembro

Effective Interaction for Relativistic Theory of Nuclear Structure

NUCLEAR STRUCTURE 16O, 40Ca; calculated single particle energies, binding energy per nucleon charge radii. Relativistic Hartree-Fock approach, relevant effective interaction.

doi: 10.1103/PhysRevC.55.167
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1996BE07      J.Phys.(London) G22, 361 (1996)

P.Bernardos, V.N.Fomenko, M.L.Quelle, S.Marcos, R.Niembro, L.N.Savushkin

Investigation of a σ + ω + ρ + a Chiral Model in a Relativistic Hartree-Fock Approximation to Asymmetric Nuclear Matter

doi: 10.1088/0954-3899/22/3/009
Citations: PlumX Metrics


1996MA30      Nucl.Phys. A600, 529 (1996)

S.Marcos, J.-F.Mathiot, M.Lopez-Quelle, R.Niembro, P.Bernardos

A Density-Dependent Effective Interaction for Relativistic Hartree-Fock Calculations

doi: 10.1016/0375-9474(95)00507-2
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1995BE48      Phys.Lett. 356B, 175 (1995)

P.Bernardos, S.Marcos, R.Niembro, M.L.Quelle

Magnetic Properties of Strongly Asymmetric Nuclear Matter in a Dirac-Hartree-Fock Approach

doi: 10.1016/0370-2693(95)00846-D
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1995FO07      J.Phys.(London) G21, 53 (1995)

V.N.Fomenko, L.N.Savushkin, S.Marcos, R.Niembro, M.L.Quelle

Investigations of the Scalar Field Self-Interactions Generated by a Chiral Model in the Hartree-Fock Approach to Nuclear Structure

NUCLEAR STRUCTURE 4He, 16O, 40,48Ca; calculated binding energy per nucleon, charge radius, charge density distributions (in some cases). Chiral model in Hartree-Fock approach, normal, abnormal solutions.

doi: 10.1088/0954-3899/21/1/007
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1995FO17      Yad.Fiz. 58, No 2, 258 (1995); Phys.Atomic Nuclei 58, 214 (1995)

V.N.Fomenko, L.N.Savushkin, S.Marcos, R.Niembro, M.L.Quelle

Investigations of Scalar-Field Self-Interactions Generated by a Chiral Model in the Hartree-Fock Approach to Nuclear Structure

NUCLEAR STRUCTURE 16O, 12C, 4He; calculated binding energy per nucleon, rms charge radius, other aspects; deduced exchange effects role in chiral theory.


1995LO04      Phys.Rev. C51, 1784 (1995)

R.J.Lombard, S.Marcos, J.Mares

Description of Hypernuclei in the Scalar Derivative Coupling Model

NUCLEAR STRUCTURE A=17; A=41; A=90; A=140; calculated lambda single particle energies, hypernuclei. Scalar derivative-coupling model.

doi: 10.1103/PhysRevC.51.1784
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1994LO13      Phys.Rev. C50, 2900 (1994)

R.J.Lombard, S.Marcos, J.Mares

Bertlmann-Martin Inequalities in Hypernuclei

NUCLEAR STRUCTURE A=27-209; calculated hypernuclei single particle energies. Bertlmann-Martin inequalities extended to Hamiltonian.

doi: 10.1103/PhysRevC.50.2900
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1993BE47      Phys.Rev. C48, 2665 (1993)

P.Bernardos, V.N.Fomenko, V.G.Nguyen, M.L.Quelle, S.Marcos, R.Niembro, L.N.Savushkin

Relativistic Hartree-Fock Approximation in a Nonlinear Model for Nuclear Matter and Finite Nuclei

NUCLEAR STRUCTURE 16O, 90Zr, 40,48Ca, 208Pb; calculated charge distributions. Relativistic Hartree-Fock approximation, nonlinear model.

doi: 10.1103/PhysRevC.48.2665
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1993FO02      J.Phys.(London) G19, 545 (1993)

V.N.Fomenko, S.Marcos, L.N.Savushkin

Investigation of a Chiral Model in the Framework of a Relativistic Self-Consistent Calculation for Atomic Nuclei

NUCLEAR STRUCTURE 16O; calculated total binding energy, charge density distribution, rms charge radii, single particle binding energy. Relativistic chiral model.

doi: 10.1088/0954-3899/19/4/010
Citations: PlumX Metrics


1992CE01      Nucl.Phys. A537, 486 (1992)

M.Centelles, X.Vinas, M.Barranco, S.Marcos, R.J.Lombard

Semiclassical Approximations in Non-Linear σ(omega) Models

NUCLEAR STRUCTURE 40Ca, 208Pb; calculated total energy, proton, neutron rms radii, nucleon densities. Nonlinear (sigma-omega) models, semi-classical approximations.

doi: 10.1016/0375-9474(92)90365-Q
Citations: PlumX Metrics


1992MA35      Yad.Fiz. 55, 1848 (1992); Sov.J.Nucl.Phys. 55, 1023 (1992)

S.Marcos, L.N.Savushkin, V.N.Fomenko

Study of the Chiral Model in the Framework of a Relativistic Self-Consistent Calculation of Finite Nuclei

NUCLEAR STRUCTURE 16O, 40Ca; calculated charge density distributions, self-consistent potentials, rms charge radii. Relativistic self-consistent Hartree approximations.


1992MA45      Nucl.Phys. A549, 143 (1992)

S.Marcos, N.Van Giai, L.N.Savushkin

Coulomb Displacement Energies in Relativistic and Non-Relativistic Self-Consistent Models

NUCLEAR STRUCTURE 15,17O, 15N, 17F, 39Ca, 39K, 41Sc, 41Ca; calculated Coulomb displacement energies. Dirac-Hartree, Skyrme-Hartree-Fock models.

doi: 10.1016/0375-9474(92)90071-Q
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1991BA28      Phys.Rev. C44, 178 (1991)

M.Barranco, R.J.Lombard, S.Marcos, S.A.Moszkowski

Multi-Lambda Matter in a Derivative Coupling Model

NUCLEAR STRUCTURE 40Ca; calculated baryon density, spin orbit potential, scalar, vector fields. Mean field approximation.

doi: 10.1103/PhysRevC.44.178
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1991MA23      Phys.Lett. 257B, 5 (1991)

S.Marcos, M.Lopez-Quelle, Nguyen Van Giai

Finite Nuclei Calculations Using Dirac-Brueckner Self-Energies

NUCLEAR STRUCTURE 40Ca, 90Zr, 208Pb; calculated charge densities, nucleon single-particle spectra, nucleon, charge rms radii. Dirac-Brueckner Hartree-Fock theory, local density approximation.

doi: 10.1016/0370-2693(91)90848-K
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1988LO06      Nucl.Phys. A483, 479 (1988)

M.Lopez-Quelle, S.Marcos, R.Niembro, A.Bouyssy, Nguyen Van Giai

Asymmetric Nuclear Matter in the Relativistic Approach

NUCLEAR STRUCTURE 1n, 1H; calculated self energies, Fermi energy differences.

doi: 10.1016/0375-9474(88)90080-2
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1987BO11      Phys.Rev. C36, 380 (1987)

A.Bouyssy, J.-F.Mathiot, Nguyen Van Giai, S.Marcos

Relativistic Description of Nuclear Systems in the Hartree-Fock Approximation

NUCLEAR STRUCTURE 16O, 40,48Ca, 90Zr, 208Pb; calculated total binding energy per particle, proton spin-orbit splitting, rms charge radius, charge distributions. Relativistic Hartree-Fock.

doi: 10.1103/PhysRevC.36.380
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1986BO22      Czech.J.Phys. B36, 976 (1986)

A.Bouyssy, S.Marcos, J.F.Mathiot, Nguyen van Giai

A Relativistic Description of Nuclei

NUCLEAR STRUCTURE 16O; calculated binding energy per particle, rms charge radius. Hartree, Hartree-Fock approach, relativistic formalism.

doi: 10.1007/BF01797513
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1985BA15      Phys.Lett. 154B, 96 (1985)

M.Barranco, A.Polls, S.Marcos, J.Navarro, J.Treiner

The Excited Dipole Resonance: A finite-temperature sum rule approach

NUCLEAR STRUCTURE 40Ca, 78Kr, 127Cs, 144Gd, 208Pb; calculated GDR energy, width evolution vs excitation energy. Finite temperature sum rule approach.

doi: 10.1016/0370-2693(85)90565-9
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1984BA45      Phys.Lett. 143B, 314 (1984)

M.Barranco, S.Marcos, J.Treiner

The Warm Breath

NUCLEAR STRUCTURE 208Pb, 90Zr; calculated isoscalar giant monopole resonance, width. 208Pb; calculated isothermal compressibility, giant monopole resonance transition density. Hot modified Thomas-Fermi method.

doi: 10.1016/0370-2693(84)91472-2
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1984BO11      Nucl.Phys. A415, 497 (1984)

A.Bouyssy, S.Marcos, J.F.Mathiot

Single-Particle Magnetic Moments in a Relativistic Shell Model

NUCLEAR STRUCTURE 16O, 40Ca; calculated proton, neutron separation energies. 15N, 17F, 17,15O, 39,41Ca, 39K, 41Sc; calculated μ corrections. Relativistic shell model.

doi: 10.1016/0375-9474(84)90315-4
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1984BO26      Nucl.Phys. A422, 541 (1984)

A.Bouyssy, S.Marcos, Pham Van Thieu

Systematics of Nuclear Matter and Finite Nuclei Properties in a Non-Linear Relativistic Mean Field Approach

NUCLEAR STRUCTURE 16O, 40,48Ca, 90Zr, 208Pb; calculated single particle levels, binding energy per nucleon, charge radii, nucleon density distribution. 40,48Ca; calculated isotope shift. Nonlinear relativistic mean field approach.

doi: 10.1016/0375-9474(84)90364-6
Citations: PlumX Metrics


1984MA11      Phys.Lett. 134B, 287 (1984)

S.Marcos, H.Flocard, P.-H.Heenen

Calculation of the Peierls-Yoccoz Translational Mass for Hartree-Fock Wave Functions

NUCLEAR STRUCTURE 4He, 16O; calculated Hartree-Fock energy, Peierls-Yocoz mass parameters; deduced galilean invariance breaking evidence.

doi: 10.1016/0370-2693(84)90001-7
Citations: PlumX Metrics


1983MA68      Nucl.Phys. A410, 125 (1983)

S.Marcos, H.Flocard, P.H.Heenen

Influence of Left-Right Asymmetry Degrees of Freedom in Self-Consistent Calculations of 20Ne

NUCLEAR STRUCTURE 20Ne; calculated binding energy, charge radius, charge quadrupole moment; deduced left-right asymmetry, cluster channel degrees of freedom. Self-consistent calculation, α-16O clustering.

doi: 10.1016/0375-9474(83)90405-0
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1983MA76      Nuovo Cim. 78A, 135 (1983)

S.Marcos, E.Santos

Thermal Properties of Nuclei in the Energy Density Formalism

NUCLEAR STRUCTURE 40Ca, 90Zr, 208Pb; calculated density distribution, rms radius, Coulomb energy, entropy per particle, level density parameter temperature dependences. A=50-200; calculated level density parameter mass dependence. Variational method, Fermi type functions.

doi: 10.1007/BF02778179
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1982BO24      Phys.Lett. 114B, 397 (1982)

A.Bouyssy, S.Marcos

Relativistic Mean Field Approach to the Scattering of Antinucleons and Nucleons by Nuclei

NUCLEAR REACTIONS 27Al, 208Pb(p, X), 63Cu, 12C(p-bar, X), E=0.1-2 GeV; calculated total σ(reaction) vs E. Relativistic mean field method.

doi: 10.1016/0370-2693(82)90079-X
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