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Search: Author = V.Bernard

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2017SI25      Phys.Rev. C 96, 055205 (2017)

D.Siemens, V.Bernard, E.Epelbaum, A.M.Gasparyan, H.Krebs, Ulf-G.Meissner

Elastic and inelastic pion-nucleon scattering to fourth order in chiral perturbation theory

NUCLEAR REACTIONS 1H(π-, π0π0), (π-, π+π-), (π-, π0π-), (π+, π+π+), (π-, π+π0), Tπ<0.4 GeV; calculated pion-nucleon total cross sections, σ(θ, E), low-energy constants (LECs); deduced contributions of the Δ(1232) resonance. Chiral perturbation theory using heavy-baryon approach and covariant formulation, with extended on-mass-shell (EOMS) scheme. Comparison with experimental data.

doi: 10.1103/PhysRevC.96.055205
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2016SI17      Phys.Rev. C 94, 014620 (2016)

D.Siemens, V.Bernard, E.Epelbaum, A.Gasparyan, H.Krebs, Ulf-G.Meissner

Elastic pion-nucleon scattering in chiral perturbation theory: A fresh look

NUCLEAR REACTIONS 1H(π+, π+), E=50-150 MeV; analyzed σ(θ) data from GWU-SAID database using chiral perturbation theory up to fourth order within the heavy-baryon (HB) expansion and a covariant approach based on an extended on-mass-shell (EOMS) renormalization scheme; deduced phase shifts and compared with predictions from Roy-Steiner-equation analysis.

doi: 10.1103/PhysRevC.94.014620
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2014GO30      Eur.Phys.J. A 50, 177 (2014)

J.Golak, R.Skibinski, K.Topolnicki, H.Witala, E.Epelbaum, H.Krebs, H.Kamada, Ulf-G.Meissner, V.Bernard, P.Maris, J.Vary, S.Binder, A.Calci, K.Hebeler, J.Langhammer, R.Roth, A.Nogga, S.Liebig, D.Minossi

Low-energy neutron-deuteron reactions with N3LO chiral forces

NUCLEAR REACTIONS 2H(n, n), E=6.5, 10 MeV; calculated analyzing power. 2H(n, x), E=13.0 MeV; calculated σ(θ). Three-nucleon Faddeev equations with different N3LO chiral forces. Compared to data.

doi: 10.1140/epja/i2014-14177-7
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2014SI13      Phys.Rev. C 89, 065211 (2014)

D.Siemens, V.Bernard, E.Epelbaum, H.Krebs, Ulf-G.Meissner

The reaction πN → ππN in chiral effective field theory with explicit Δ(1232) degrees of freedom

doi: 10.1103/PhysRevC.89.065211
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2011BE44      Phys.Rev. C 84, 054001 (2011)

V.Bernard, E.Epelbaum, H.Krebs, U.-G.Meissner

Subleading contributions to the chiral three-nucleon force. II. Short-range terms and relativistic corrections

doi: 10.1103/PhysRevC.84.054001
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2008BE01      Prog.Part.Nucl.Phys. 60, 82 (2008)

V.Bernard

Chiral perturbation theory and baryon properties

doi: 10.1016/j.ppnp.2007.07.001
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2008BE15      Eur.Phys.J. A 35, 281 (2008)

V.Bernard, M.Lage, U.-G.Meissner, A.Rusetsky

Analysis of the Δ-resonance in a finite volume

doi: 10.1140/epja/i2007-10562-7
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2008BE16      Phys.Rev. C 77, 064004 (2008)

V.Bernard, E.Epelbaum, H.Krebs, U.-G.Meissner

Subleading contributions to the chiral three-nucleon force: Long-range terms

doi: 10.1103/PhysRevC.77.064004
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2006BE37      Phys.Lett. B 639, 278 (2006)

V.Bernard, U.-G.Meissner

The nucleon axial-vector coupling beyond one loop

doi: 10.1016/j.physletb.2006.06.018
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2005BE57      Eur.Phys.J. A 25, 419 (2005)

V.Bernard, B.Kubis, U.-G.Meissner

The Fubini-Furlan-Rosetti sum rule and related aspects in light of covariant baryon chiral perturbation theory

doi: 10.1140/epja/i2005-10144-9
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2005GA37      J.Res.Natl.Inst.Stand.Technol. 110, 411 (2005)

S.Gardner, V.Bernard, Ulf-G.Meissner, C.Zhang

Radiative Neutron β-Decay in Effective Field Theory

RADIOACTIVITY 1n(β-); calculated photon spectrum, polarization. Effective field theory.

doi: 10.6028/jres.110.062
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2005KR07      Ann.Phys.(New York) 316, 160 (2005)

H.Krebs, V.Bernard, U.-G.Meissner

Orthonormalization procedure for chiral effective nuclear field theory

doi: 10.1016/j.aop.2004.09.007
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2004BE04      Nucl.Phys. A732, 149 (2004)

V.Bernard, T.R.Hemmert, Ulf-G.Meissner

Cutoff schemes in chiral perturbation theory and the quark mass expansion of the nucleon mass

doi: 10.1016/j.nuclphysa.2003.12.011
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2004BE44      Phys.Lett. B 593, 105 (2004); Erratum Phys.Lett. B 599, 348 (2004)

V.Bernard, S.Gardner, U.-G.Meissner, C.Zhang

Radiative neutron β-decay in effective field theory

RADIOACTIVITY 1n(β-); calculated photon spectrum, polarization for radiative decay. Effective field theory.

doi: 10.1016/j.physletb.2004.04.064
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2004GA43      Phys.Lett. B 598, 188 (2004)

S.Gardner, V.Bernard, U.-G.Meissner

Radiative tritium β-decay and the neutrino mass

RADIOACTIVITY 3H(β-); calculated Eβ, radiative corrections. Implications for neutrino mass determination discussed.

doi: 10.1016/j.physletb.2004.08.006
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2004KR18      Eur.Phys.J. A 22, 503 (2004)

H.Krebs, V.Bernard, U.-G.Meissner

Improved analysis of coherent neutral pion electroproduction on deuterium in chiral perturbation theory

NUCLEAR REACTIONS 2H(e, π0X), E ≈ threshold; calculated σ, σ(E, θ). Heavy baryon chiral perturbation theory, comparison with data.

doi: 10.1140/epja/i2004-10052-6
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2003BE26      Phys.Rev. D 67, 076008 (2003)

V.Bernard, T.R.Hemmert, U.-G.Meissner

Spin structure of the nucleon at low energies

NUCLEAR STRUCTURE 1n, 1H; calculated spin structure functions. Lorentz-invariant baryon chiral perturbation theory.

doi: 10.1103/PhysRevD.67.076008
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2003BE35      Nucl.Phys. A720, 399 (2003)

S.R.Beane, V.Bernard, E.Epelbaum, Ulf-G.Meissner, D.R.Phillips

The S-wave pion-nucleon scattering lengths from pionic atoms using effective field theory

ATOMIC PHYSICS, Mesic-atoms 1,2H(π-, X), E at rest; analyzed pionic atoms decay data; deduced pion-nucleon scattering lengths.

doi: 10.1016/S0375-9474(03)01008-X
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2003BE61      Eur.Phys.J. A 18, 503 (2003)

V.Bernard, T.R.Hemmert, U.-G.Meissner

Moments of polarized parton distribution functions

doi: 10.1140/epja/i2002-10270-x
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2003KR01      Nucl.Phys. A713, 405 (2003)

H.Krebs, V.Bernard, U.Meissner

Near threshold neutral pion electroproduction on deuterium in chiral perturbation theory

NUCLEAR REACTIONS 2H(e, e'π0), E ≈ threshold; calculated σ, σ(θ). Chiral perturbation theory, comparison with data.

doi: 10.1016/S0375-9474(02)01305-2
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2002BE03      J.Phys.(London) G28, R1 (2002)

V.Bernard, L.Elouadrhiri, U.-G.Meissner

Axial Structure of the Nucleon

doi: 10.1088/0954-3899/28/1/201
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2002BE67      Phys.Lett. 545B, 105 (2002)

V.Bernard, T.R.Hemmert, Ulf.-G.Meissner

Novel Analysis of Chiral Loop Effects in the Generalized Gerasimov-Drell-Hearn Sum Rule

doi: 10.1016/S0370-2693(02)02584-4
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2001BE16      Nucl.Phys. A686, 290 (2001)

V.Bernard, T.R.Hemmert, Ulf.-G.Meissner

Ordinary and Radiative Muon Capture on the Proton and the Pseudoscalar Form Factor of the Nucleon

NUCLEAR REACTIONS 1H(μ-, ν), (μ-, νγ), E not given; calculated capture rates, γ spectra, Δ resonance contributions, related features. Implications for determination of proton pseudoscalar form factor discussed.

doi: 10.1016/S0375-9474(00)00520-0
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2001BE44      Eur.Phys.J. A 11, 209 (2001)

V.Bernard, N.Kaiser, U.-G.Meissner

Aspects of Near-Threshold Neutral Pion Photoproduction Off Protons

NUCLEAR REACTIONS 1H(γ, π0), E=144, 166 MeV; calculated σ(θ), electric-dipole amplitude, photon asymmetry . Chiral perturbation, comparison with data.

doi: 10.1007/s100500170085
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2000BE17      Phys.Rev. C61, 058201 (2000)

V.Bernard, H.Krebs, Ulf.-G.Meissner

Neutral Pion Electroproduction Off Deuterium

NUCLEAR REACTIONS 2H(e, π0X), E ≈ threshold; calculated S-wave multipoles, S-wave cross sections. Chiral perturbation theory.

doi: 10.1103/PhysRevC.61.058201
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2000BE37      Phys.Rev. C62, 028201 (2000)

V.Bernard, N.Kaiser, Ulf.-G.Meissner

Pion Charge Radius from Charged Pion Electroproduction

doi: 10.1103/PhysRevC.62.028201
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2000FE03      Nucl.Phys. A669, 269 (2000)

N.Fettes, V.Bernard, Ulf.-G.Meissner

One-Loop Analysis of the Reaction πN → ππN

NUCLEAR REACTIONS 1H(π+, 2π+), (π+, π+π0), (π-, π-π+), (π-, 2π0), (π-, π-π0), E < 0.25 GeV; analyzed σ, σ(E), σ(θ).

doi: 10.1016/S0375-9474(99)00367-X
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1999BE12      Eur.Phys.J. A 4, 259 (1999)

V.Bernard, N.Kaiser, Ulf.-G.Meissner

Novel Approach to Pion and Eta Production in Proton-Proton Collisions Near Threshold

NUCLEAR REACTIONS 1H(p, pπ0), E=282-326 MeV; 1H(p, pπ+), E=294-319 MeV; analyzed σ; deduced threshold amplitudes. 1H(p, pX), E=1250-1375 MeV; analyzed η production σ; deduced threshold amplitude. Relativistic diagrammatic approach.

doi: 10.1007/s100500050229
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1998BE02      Phys.Rev. C57, 424 (1998)

S.R.Beane, V.Bernard, T.-S.H.Lee, U.-G.Meissner

Isoscalar S-Wave π-N Scattering Length a+ from π-Deuteron Scattering

NUCLEAR REACTIONS 2H(π, X), E not given; calculated scattering length; deduced πN scattering length related features.

doi: 10.1103/PhysRevC.57.424
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1998BE25      Nucl.Phys. A635, 121 (1998); Erratum Nucl.Phys. A642, 563 (1998)

V.Bernard, H.W.Fearing, T.R.Hemmert, U.-G.Meissner

The Form Factors of the Nucleon at Small Momentum Transfer

doi: 10.1016/S0375-9474(98)00175-4
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1997BE11      Nucl.Phys. A615, 483 (1997)

V.Bernard, N.Kaiser, Ulf.-G.Meissner

Aspects of Chiral Pion-Nucleon Physics

doi: 10.1016/S0375-9474(97)00021-3
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1997BE19      Nucl.Phys. A618, 381 (1997)

S.R.Beane, V.Bernard, T.-S.H.Lee, Ulf.-G.Meissner, U.van Kolck

Neutral Pion Photoproduction on Deuterium in Baryon Chiral Perturbation Theory to Order q4

NUCLEAR REACTIONS 2H(γ, X), E ≈ threshold; calculated π0 production σ related features; deduced sensitivity to γn → π0n amplitude. Baryon chiral perturbation theory to order q4.

doi: 10.1016/S0375-9474(97)00133-4
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1997BE28      Nucl.Phys. A619, 261 (1997)

V.Bernard, N.Kaiser, Ulf.-G.Meissner

The Reaction πN → ππN Above Threshold in Chiral Perturbation Theory

NUCLEAR REACTIONS 1H(π-, π+π-), (π+, π+π0), (π-, 2π0), E ≤ 0.4 GeV; calculated σ(E). Relativistic baryon chiral perturbation theory.

doi: 10.1016/S0375-9474(97)00159-0
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1996BE20      Phys.Lett. 378B, 337 (1996)

V.Bernard, N.Kaiser, Ulf.-G.Meissner

Chiral Symmetry and the Reaction γp → π0p

NUCLEAR REACTIONS 1H(γ, π0), E=145.29-152.53 MeV; analyzed σ(θ), σ(E) data; deduced loop effects role. Chiral perturbation theory.

doi: 10.1016/0370-2693(96)00356-5
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1996BE22      Phys.Lett. 382B, 19 (1996)

V.Bernard, N.Kaiser, Ulf.-G.Meissner

Double Neutral Pion Photoproduction at Threshold

NUCLEAR REACTIONS 1H(γ, X), E=threshold; calculated 2π0-production threshold amplitude; deduced pion loops role. Chiral expansion approach.

doi: 10.1016/0370-2693(96)00646-6
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1996BE52      Nucl.Phys. A607, 379 (1996); Erratum Nucl.Phys. A633, 695 (1998)

V.Bernard, N.Kaiser, U.-G.Meissner

Threshold Neutral Pion Electroproduction in Heavy Baryon Chiral Perturbation Theory

NUCLEAR REACTIONS 1H(e, e'X), E not given; analyzed π0 production data. Heavy baryon chiral perturbation theory, virtual photons.

doi: 10.1016/S0375-9474(96)00184-4
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1996BE82      Nucl.Phys. A611, 429 (1996)

V.Bernard, N.Kaiser, Ulf.-G.Meissner

Nucleon Electroweak Form Factors: Analysis of their spectral functions

doi: 10.1016/S0375-9474(96)00291-6
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1995BE14      Phys.Rev.Lett. 74, 1036 (1995)

V.Bernard, N.Kaiser, Ulf.-G.Meissner

Comment on ' Low Energy Expansions for Double-Pion Photoproduction '

doi: 10.1103/PhysRevLett.74.1036
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1995BE24      Phys.Rev.Lett. 74, 3752 (1995)

V.Bernard, N.Kaiser, Ulf.-G.Meissner

Novel Pion Electroproduction Low-Energy Theorems

doi: 10.1103/PhysRevLett.74.3752
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1995BE40      Phys.Rev. C52, 2185 (1995)

V.Bernard, N.Kaiser, Ulf.-G.Meissner

Chiral Prediction for the πN S-Wave Scattering Length a- to Order (M4(π))

doi: 10.1103/PhysRevC.52.2185
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1995BE72      Int.J.Mod.Phys. E4, 193 (1995)

V.Bernard, N.Kaiser, Ulf-G.Meissner

Chiral dynamics in nucleons and nuclei

doi: 10.1142/S0218301395000092
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1994BE14      Phys.Rev.Lett. 72, 2810 (1994)

V.Bernard, N.Kaiser, Ulf.-G.Meissner

Comment on ' Axial and Pseudoscalar Nucleon Form Factors from Low Energy Pion Electroproduction '

doi: 10.1103/PhysRevLett.72.2810
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1994BE26      Z.Phys. A348, 317 (1994)

V.Bernard, N.Kaiser, Ulf.-G.Meissner, A.Schmidt

Aspects of Nucleon Compton Scattering

NUCLEAR STRUCTURE 1H, 1n; analyzed Compton scattering amplitudes; deduced electromagnetic polarizabilities.

doi: 10.1007/BF01305891
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1994BE36      Nucl.Phys. A580, 475 (1994)

V.Bernard, N.Kaiser, Ulf.G.Meissner, A.Schmidt

Threshold Two-Pion Photo- and Electroproduction: More neutrals than expected

doi: 10.1016/0375-9474(94)90910-5
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1991BE13      Ann.Phys.(New York) 206, 50 (1991)

V.Bernard, U.-G.Meissner

Hot Nucleons

NUCLEAR STRUCTURE 1n; calculated μ, charge form factor, rms radius. 1H; calculated μ, rms radius. Topological chiral soliton model, nonlinear meson theory.

doi: 10.1016/0003-4916(91)90220-3
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1990BE26      Phys.Lett. 243B, 439 (1990)

V.Bernard, N.Kaiser, Ulf-G.Meissner

Nucleon Structure Uncertainties in Parity-Violating Quasi-Elastic Electron Scattering

NUCLEAR REACTIONS 9Be(polarized e, e'X), E not given; analyzed data; deduced nucleon structure uncertainities.

doi: 10.1016/0370-2693(90)91410-D
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1984BE35      Nucl.Phys. A423, 511 (1984)

V.Bernard, J.Girard, J.Julien, R.Legrain, J.Poitou, A.Oskarsson, L.Carlen, H.-A.Gustafsson, B.Jakobsson, P.Kristiansson, B.Noren, I.Otterlund, H.Ryde, T.Johansson, G.Tibell, R.Bertholet, C.Guet, M.Maurel, H.Nifenecker, P.Perrin, F.Schussler, M.Buenerd, D.Lebrun, P.Martin, G.Lovhoiden, J.P.Bondorf, O.-B.Nielsen, A.Palmeri

Production of Charged Pions in Intermediate-Energy Heavy-Ion Collisions

NUCLEAR REACTIONS 7Li, 12C, 208Pb(12C, π+), E=60, 75, 85 MeV/nucleon; measured production σ(θ), σ(θ, E(π)); deduced (π-+) ratio.

doi: 10.1016/0375-9474(84)90038-1
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1982BE34      Nucl.Phys. A385, 319 (1982)

V.Bernard, C.Gregoire, C.Mazur, C.Ngo, M.Ribrag, G.Y.Fan, P.Gonthier, H.Ho, W.Kuhn, J.P.Wurm

Further Experimental Study of Fast Fission with the Cl + Au System

NUCLEAR REACTIONS 197Au(35Cl, F), (35Cl, X), E=204-317 MeV; measured fission induced σ(fragment θ), σ(fusion) versus mass; deduced reaction mechanism. Semi-static model.

doi: 10.1016/0375-9474(82)90175-0
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1982TO03      Nucl.Phys. A373, 341 (1982)

E.Tomasi, D.Ardouin, J.Barreto, V.Bernard, B.Cauvin, C.Magnago, C.Mazur, C.Ngo, E.Piasecki, M.Ribrag

Fusion Excitation Function of the 40Ca + 40Ca System Close to the Threshold

NUCLEAR REACTIONS 40Ca(40Ca, X), E=112.5-165 MeV; measured σ(fusion, E), σ(evaporation residue θ).

doi: 10.1016/0375-9474(82)90155-5
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1981TO18      Fizika(Zagreb) 13, Suppl.No.1, 6 (1981)

E.Tomasi, D.Ardouin, J.Barreto, V.Bernard, H.Doubre, C.Ngo, C.Mazur, E.Piasecki, M.Ribrag

Fusion Excitation Function of the 40Ca + 40Ca System near Threshold

NUCLEAR REACTIONS 40Ca(40Ca, X), E(cm) ≈ 60-80 MeV; measured σ(fusion, E). Two-dimensional position sensitive detector.


1980AU01      Phys.Rev. C21, 744 (1980)

N.Auerbach, V.Bernard, Nguyen Van Giai

41Sc-41Ca Coulomb Displacement Energy

NUCLEAR STRUCTURE 41Sc, 41Ca; calculated Coulomb displacement energy. Hartree-Fock densities, higher order Coulomb corrections.

doi: 10.1103/PhysRevC.21.744
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1980AU04      Nucl.Phys. A337, 143 (1980)

N.Auerbach, V.Bernard, Nguyen Van Giai

Coulomb Displacement Energies in Nuclei: A New Approach

NUCLEAR STRUCTURE 48Ca, 88Sr, 140Ce, 208Pb; calculated Coulomb displacement, IAR energies. Hartree-Fock-Tamm-Dancoff approximation theory.

doi: 10.1016/0375-9474(80)90083-4
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1980BE40      Nucl.Phys. A348, 75 (1980)

V.Bernard, Nguyen Van Giai

Effects of Collective Modes on the Single-Particle States and the Effective Mass in 208Pb

NUCLEAR STRUCTURE 208Pb; calculated single particle energies, S, nucleon effective mass. Microscopic particle-vibration model.

doi: 10.1016/0375-9474(80)90546-1
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1979BE37      Nucl.Phys. A327, 397 (1979)

V.Bernard, Nguyen Van Giai

Microscopic Optical Potential for 208Pb in the Nuclear Structure Approach

NUCLEAR REACTIONS 208Pb(n, n), E=15 MeV; 208Pb(p, p), E=30 MeV; calculated optical potential, σ(θ). Microscopic, complex equivalent potential approaches.

doi: 10.1016/0375-9474(79)90266-5
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