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Search: Author = S.A.Sofianos

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2014LE10      Phys.Atomic Nuclei 77, 472 (2014)

M.L.Lekala, G.J.Rampho, R.M.Adam, S.A.Sofianos, V.B.Belyaev

The double-Λ hypernucleus 11ΛΛ Be

NUCLEAR STRUCTURE 11Be; calculated ground-state energy of the double-Λ hypernucleus. Five-body model.

doi: 10.1134/S1063778814040048
Citations: PlumX Metrics

2011SO31      Phys.Rev. C 84, 064304 (2011)

S.A.Sofianos, R.M.Adam, V.B.Belyaev

α-cluster-model description of nuclei

doi: 10.1103/PhysRevC.84.064304
Citations: PlumX Metrics

2007RA18      Nucl.Phys. A790, 691c (2007)

G.J.Rampho, M.L.Lekala, S.A.Sofianos, R.M.Adam

Relaxation method for A-body systems

doi: 10.1016/j.nuclphysa.2007.03.017
Citations: PlumX Metrics

2007SO16      Nucl.Phys. A790, 796c (2007)

S.A.Sofianos, M.L.Lekala, G.J.Rampho, V.A.Roudnev

The Ar3 molecular system

doi: 10.1016/j.nuclphysa.2007.03.029
Citations: PlumX Metrics

2007VO05      Nucl.Phys. A790, 655c (2007)

C.Voglis, I.E.Lagaris, M.L.Lekala, G.J.Rampho, S.A.Sofianos

Global minimization in few-body systems

doi: 10.1016/j.nuclphysa.2007.03.111
Citations: PlumX Metrics

2005FA08      Ann.Phys.(New York) 316, 107 (2005)

M.Fabre de la Ripelle, S.A.Sofianos, R.M.Adam

Method for solving the many-body bound state nuclear problem

NUCLEAR STRUCTURE 4He, 10B, 16O, 40Ca; calculated ground-state energies, radii, related quantities. Hyperspherical harmonics, integro-differential equations.

doi: 10.1016/j.aop.2004.09.006
Citations: PlumX Metrics

2004BE48      Eur.Phys.J. A 22, 261 (2004)

M.Beyer, S.Strauss, P.Schuck, S.A.Sofianos

Light clusters in nuclear matter of finite temperature

doi: 10.1140/epja/i2003-10237-5
Citations: PlumX Metrics

2004LE16      Phys.Rev. C 69, 054608 (2004)

H.Leeb, S.A.Sofianos

Relevance of pseudospin symmetry in proton-nucleus scattering

NUCLEAR REACTIONS 58Ni, 208Pb(p, p), E=200-800 MeV; analyzed σ(θ), polarization observables; deduced pseudospin-symmetry violating scattering amplitude.

doi: 10.1103/PhysRevC.69.054608
Citations: PlumX Metrics

2003SH01      Nucl.Phys. A714, 277 (2003)

N.V.Shevchenko, V.B.Belyaev, S.A.Rakityansky, S.A.Sofianos, W.Sandhas

Coherent photoproduction of η-mesons on three-nucleon systems

NUCLEAR REACTIONS 3H, 3He(γ, X), E=600-660 MeV; calculated η-meson production σ, sensitivity to choice of T-matrix. Finite rank approximation.

doi: 10.1016/S0375-9474(02)01368-4
Citations: PlumX Metrics

2002SH07      Nucl.Phys. A699, 165c (2002)

N.V.Shevchenko, V.B.Belyaev, S.A.Rakityansky, S.A.Sofianos, W.Sandhas

Eta Photoproduction Off Three Body Nuclei

NUCLEAR REACTIONS 3H, 3He(γ, X), E=600-660 MeV; calculated η-meson production σ. Microscopic finite rank approximation method.

doi: 10.1016/S0375-9474(01)01488-9
Citations: PlumX Metrics

2001BE61      J.Phys.(London) G27, 2081 (2001)

M.Beyer, S.A.Sofianos

In-Medium Nucleon-Nucleon Potentials in Configuration Space

doi: 10.1088/0954-3899/27/10/309
Citations: PlumX Metrics

2001MO11      Nucl.Phys. A684, 646c (2001)

A.K.Motovilov, W.Sandhas, S.A.Sofianos, E.A.Kolganova

Binding Energies and Scattering Observables in the 4He3 Atomic System

doi: 10.1016/S0375-9474(01)00462-6
Citations: PlumX Metrics

2001PA13      Phys.Rev. C63, 044009 (2001)

G.Pantis, I.E.Lagaris, S.A.Sofianos

Forbidden States and the Three-Body Bound State Collapse

doi: 10.1103/PhysRevC.63.044009
Citations: PlumX Metrics

2001RA15      Nucl.Phys. A684, 383c (2001)

S.A.Rakityansky, S.A.Sofianos, N.V.Shevchenko, V.B.Belyaev, W.Sandhas

Mear-Threshold ηd Resonance

doi: 10.1016/S0375-9474(01)00402-X
Citations: PlumX Metrics

2001SH30      Nucl.Phys. A689, 383c (2001)

N.V.Shevchenko, V.B.Belyaev, S.A.Rakityansky, S.A.Sofianos, W.Sandhas

Photoproduction of η-Mesons Off Light Nuclei

NUCLEAR REACTIONS 2H(γ, X), E=625-655 MeV; calculated η meson production σ, σ(θ); deduced reaction mechanism features. Alt-Grassberger-Sandhas formalism, comparisons with data.

doi: 10.1016/S0375-9474(01)00860-0
Citations: PlumX Metrics

2001SO10      Nucl.Phys. A684, 464c (2001)

S.A.Sofianos, G.Ellerkmann, W.Sandhas

The 4He(e, e'p)3H Reaction at High Missing Momenta

NUCLEAR REACTIONS 4He(e, e'p), E not given; calculated σ(E, θ); deduced reaction mechanism features. Comparison with data.

doi: 10.1016/S0375-9474(01)00506-1
Citations: PlumX Metrics

2000BE46      Phys.Lett. 488B, 247 (2000)

M.Beyer, S.A.Sofianos, C.Kuhrts, G.Ropke, P.Schuck

The α-Particle in Nuclear Matter

NUCLEAR STRUCTURE 4He; calculated binding energy for an α particle inside nuclear matter as a function of nuclear density. Solution of Alt-Grassberger-Sandhas equations.

doi: 10.1016/S0370-2693(00)00908-4
Citations: PlumX Metrics

2000LE34      Phys.Rev. C62, 064003 (2000)

H.Leeb, S.A.Sofianos, J.-M.Sparenberg, D.Baye

Supersymmetric Transformations in Coupled-Channel Systems

doi: 10.1103/PhysRevC.62.064003
Citations: PlumX Metrics

2000SH39      Eur.Phys.J. A 9, 143 (2000)

N.V.Shevchenko, V.B.Belyaev, S.A.Rakityansky, S.A.Sofianos, W.Sandhas

Low-Energy ηd-Resonance

doi: 10.1007/s100500070064
Citations: PlumX Metrics

1999BR13      Phys.Rev. C59, 2396 (1999)

M.Braun, L.L.Howell, S.A.Sofianos, W.Sandhas

Model Calculations for the Two-Fragment Electro-Disintegration of 4He

NUCLEAR REACTIONS 4He(e, e'p), E=525, 560 MeV; calculated σ(E, θ(e), θ(p)) vs missing momentum; deduced reaction mechanism features. Comparison with data.

doi: 10.1103/PhysRevC.59.2396
Citations: PlumX Metrics

1999MA69      Nucl.Phys. A654, 597 (1999)

S.E.Massen, S.A.Sofianos, S.A.Rakityansky, S.Oryu

Resonances and Off-Shell Characteristics of Effective Interactions

doi: 10.1016/S0375-9474(99)00316-4
Citations: PlumX Metrics

1999SH13      J.Phys.(London) G25, 95 (1999)

N.V.Shevchenko, S.A.Rakityansky, S.A.Sofianos, V.B.Belyaev

Non-Radiative Synthesis of 7Be in Solar Plasma

NUCLEAR REACTIONS 3He(α, X), E not given; calculated electron accompanied three-body fusion reaction rate in solar plasma.

doi: 10.1088/0954-3899/25/1/009
Citations: PlumX Metrics

1998BE16      Nucl.Phys. A631, 720c (1998)

V.B.Belyaev, D.E.Monakhov, N.Shevchenko, S.A.Sofianos, S.A.Rakityansky, M.Braun, L.L.Howell, W.Sandhas

Nuclear Fusion Via Triple Collisions in Solar Plasma

doi: 10.1016/S0375-9474(98)00098-0
Citations: PlumX Metrics

1998MA46      Nuovo Cim. 111A, 1 (1998)

I.P.Matamba, M.Braun, S.A.Sofianos

Photoexcitation of the Nucleon in the Constituent Quark Model

1998MO13      Nucl.Phys. A635, 257 (1998)

D.E.Monakhov, V.B.Belyaev, S.A.Sofianos, S.A.Rakityansky, W.Sandhas

Triple Collisions e-p 7Be in Solar Plasma

NUCLEAR REACTIONS 7Be(p, X)8B, E not given; calculated electron-associated triple collision reaction rate, temperature dependence. Adiabatic approximation.

doi: 10.1016/S0375-9474(98)00174-2
Citations: PlumX Metrics

1998SA14      Nucl.Phys. A631, 210c (1998)

W.Sandhas, W.Schadow, G.Ellerkmann, L.L.Howell, S.A.Sofianos

Photodisintegration of Three- and Four- Nucleon Systems

NUCLEAR REACTIONS 3H(γ, n), E=5-40 MeV; 2H(p, γ), E=12.1 MeV; analyzed σ(θ). 4He(γ, n), E=20-35 MeV; 4He(γ, p), E < 170 MeV; analyzed total σ. Several models compared.

doi: 10.1016/S0375-9474(98)00024-4
Citations: PlumX Metrics

1998SH34      Phys.Rev. C58, R3055 (1998)

N.V.Shevchenko, S.A.Rakityansky, S.A.Sofianos, V.B.Belyaev, W.Sandhas

Faddeev-Type Calculation of ηd Threshold Scattering

NUCLEAR STRUCTURE 2H; calculated ηd scattering length; deduced possible resonance or quasibound state. Exact few-body equations.

doi: 10.1103/PhysRevC.58.R3055
Citations: PlumX Metrics

1998SI32      Phys.Lett. 442B, 43 (1998)

D.A.Sims, J.-O.Adler, J.R.M.Annand, G.I.Crawford, K.G.Fissum, K.Hansen, D.G.Ireland, L.Isaksson, S.McAllister, M.Lundin, J.C.McGeorge, B.Nilsson, H.Ruijter, A.Sandell, W.Sandhas, B.Schroder, S.A.Sofianos

The 4He(γ, n) Reaction: A potential testing ground for the alpha-particle wavefunction

NUCLEAR REACTIONS 4He(γ, n), E=50-71 MeV; measured σ(E, θ); deduced reaction mechanism features, sensitivity to bound state wave functions. Alt-Grassberger-Sandhas formalism. Tagged-photon facility.

doi: 10.1016/S0370-2693(98)01219-2
Citations: PlumX Metrics

1997FA26      Prog.Theor.Phys.(Kyoto) 98, 1261 (1997)

M.Fabre de la Ripelle, M.Braun, S.A.Sofianos

A Variational Integro-Differential Equation for Three Identical Particles in an S-State

1997RA01      Nucl.Phys. A613, 132 (1997)

S.A.Rakityansky, S.A.Sofianos, L.L.Howell, M.Braun, V.B.Belyaev

Nonradiative Proton-Deuteron Fusion in Stellar Plasma

doi: 10.1016/S0375-9474(96)00413-7
Citations: PlumX Metrics

1997SO27      J.Phys.(London) G23, 1619 (1997)

S.A.Sofianos, S.A.Rakityansky, G.P.Vermaak

Subthreshold Resonances in Few-Neutron Systems

NUCLEAR STRUCTURE 3,4n; calculated subthreshold resonant states; deduced potential sensitivity. Jost function.

doi: 10.1088/0954-3899/23/11/010
Citations: PlumX Metrics

1996EL04      Phys.Rev. C53, 2638 (1996)

G.Ellerkmann, W.Sandhas, S.A.Sofianos, H.Fiedeldey

Integral Equation Calculations for the Photodisintegration Process 4He(γ, n)3He

NUCLEAR REACTIONS 4He(γ, n), E ≤ 100 MeV; calculated σ(E). 4He(γ, p), E ≤ 100 MeV; calculated σ(θ), σ(E). Integral equation approach.

doi: 10.1103/PhysRevC.53.2638
Citations: PlumX Metrics

1996KO31      Nucl.Phys. A607, 123 (1996)

F.Korinek, H.Leeb, M.Braun, S.A.Sofianos, R.M.Adam

Momentum Dependent Nucleon-Nucleon Potentials Via Inverse Scattering Techniques

NUCLEAR STRUCTURE 3H; calculated binding energy vs 1S0 interaction momentum dependent term inverse range parameter. Exactly solvable models for NN-interaction, inverse scattering methods.

doi: 10.1016/S0375-9474(96)00213-8
Citations: PlumX Metrics

1996PA26      Phys.Rev. C54, 1825 (1996)

G.Pantis, S.A.Sofianos

Inverse Scattering for a Specific Resonating Group Model Nonlocality

NUCLEAR REACTIONS 4He(n, n), E=50, 100 MeV; 40Ca(n, n), E=100, 150 MeV; calculated phase shifts, equivalent local potenitals. Inverse scattering, resonating group model, specific nonlocality.

doi: 10.1103/PhysRevC.54.1825
Citations: PlumX Metrics

1996RA13      Phys.Rev. C53, R2043 (1996)

S.A.Rakityansky, S.A.Sofianos, M.Braun, V.B.Belyaev, W.Sandhas

Quasibound States of η-Nucleus Systems

NUCLEAR REACTIONS 2,3H, 3,4He(X, X), E not given; calculated η-scattering associated amplitudes, poles related features.

doi: 10.1103/PhysRevC.53.R2043
Citations: PlumX Metrics

1995GA42      Int.J.Mod.Phys. E4, 431 (1995)

E.J.O.Gavin, H.Fiedeldey, S.A.Sofianos

Three-Body Forces from n-Body Inversion

doi: 10.1142/S0218301395000158
Citations: PlumX Metrics

1995GA48      Few-Body Systems 19, 59 (1995)

E.J.O.Gavin, R.M.Adam, H.Fiedeldey, S.A.Sofianos

Relationship between the Proton Charge Form Factor and the Quark-Quark Interaction

NUCLEAR STRUCTURE 1H; calculated charge form factor; deduced quark-quark interaction features. Various parametrizations.

doi: 10.1007/s006010050018
Citations: PlumX Metrics

1995PA27      J.Phys.(London) G21, 1079 (1995)

G.Pantis, H.Fiedeldey, S.A.Sofianos

Dispersion Relation for Equivalent Local Potentials with Spurious and Dynamiac Energy Dependence

doi: 10.1088/0954-3899/21/8/006
Citations: PlumX Metrics

1995RA23      Phys.Lett. 359B, 33 (1995)

S.A.Rakityansky, S.A.Sofianos, W.Sandhas, V.B.Belyaev

Threshold Scattering of the η-Meson Off Light Nuclei

NUCLEAR REACTIONS 2,3H, 4He(X, X), E=low; calculated η-meson scattering lengths. Coherent approximation, few-body equations.

doi: 10.1016/0370-2693(95)01057-W
Citations: PlumX Metrics

1994AL01      Phys.Rev. C49, 176 (1994); Erratum Phys.Rev. C50, 520 (1994)

E.O.Alt, L.L.Howell, M.Rauh, S.A.Sofianos

Complex, Energy-Independent, Local Potential Reproducing and Absorptive Phase Shift and a Bound State

NUCLEAR STRUCTURE 3H; calculated binding energy. Exact three-body theory.

NUCLEAR REACTIONS 2H(n, n), E=50 MeV; calculated phase shifts. Fixed l-inverse scattering theory.

doi: 10.1103/PhysRevC.49.176
Citations: PlumX Metrics

1993AD06      Nucl.Phys. A559, 157 (1993)

R.M.Adam, H.Fiedeldey, S.A.Sofianos, H.Leeb

Error Propagation from Nucleon-Nucleon Data to Three- and Four-Nucleon Binding Energies

NUCLEAR STRUCTURE 3H, 4He; calculated binding energy distributions; deduced nucleon-nucleon data error propagation role.

doi: 10.1016/0375-9474(93)90184-Y
Citations: PlumX Metrics

1993HO09      Nucl.Phys. A556, 29 (1993)

L.L.Howell, S.A.Sofianos, H.Fiedeldey, G.Pantis

Nucleon-Alpha Potentials by Marchenko Inversion and Supersymmetry

NUCLEAR REACTIONS 4He(n, n), E(cm)=2-1000 MeV; calculated phase shifts; deduced potential parameters. Marchenko inversion method.

doi: 10.1016/0375-9474(93)90236-Q
Citations: PlumX Metrics

1993PA15      Nucl.Phys. A559, 266 (1993)

G.Pantis, S.A.Sofianos, H.Fiedeldey, R.Lipperheide, P.E.Hodgson

Dispersive Correction to the p + 16O Optical Model and the Effective Nucleon-Nucleon Potential

NUCLEAR REACTIONS, ICPND 16O(p, p), E=23.4-52.5 MeV; analyzed σ(θ); deduced potential parameters, reaction σ(E). Optical model, dispersive corrections.

doi: 10.1016/0375-9474(93)90191-Y
Citations: PlumX Metrics

1993PA26      Nucl.Phys. A565, 628 (1993)

G.Pantis, H.Fiedeldey, S.A.Sofianos

Dispersion Relation Approach to the Optical Potential Resonating Group Formulation of the n + 40Ca Reaction

NUCLEAR REACTIONS 40Ca(n, n), E=11.9-30.3 MeV; analyzed σ(θ); deduced model parameters. Semi-microscopic model, dispersion relation approach.

doi: 10.1016/0375-9474(93)90049-4
Citations: PlumX Metrics

1993SO08      Yad.Fiz. 56, No 7, 5 (1993); Phys.Atomic Nuclei 56, 859 (1993)

S.A.Sofianos, H.Fiedeldey, W.Sandhas

Integral and Integrodifferential-Equation Approach to Helium Photodisintegration

NUCLEAR REACTIONS 4He(γ, p), (γ, n), E=21-34 MeV; calculated photodisintegration σ(E); deduced no resonance structure. Integral, integrodifferential equation approaches.

1993SO11      Phys.Rev. C48, 2285 (1993)

S.A.Sofianos, H.Fiedeldey, W.Sandhas

Photodisintegration of 4He in the Integrodifferential Equation Approach

NUCLEAR REACTIONS 4He(γ, n), (γ, p), E=20-60 MeV; analyzed σ(E). Integrodifferential approach.

doi: 10.1103/PhysRevC.48.2285
Citations: PlumX Metrics

1993SO16      J.Phys.(London) G19, 1929 (1993)

S.A.Sofianos, K.C.Panda, P.E.Hodgson

The Microscopic Alpha-Alpha Potential

NUCLEAR REACTIONS 4He(α, α), E(cm)=1, 10, 17 MeV; calculated microscopic potential. Skyrme effective interaction, folding, energy-density models.

doi: 10.1088/0954-3899/19/11/019
Citations: PlumX Metrics

1992AD05      J.Phys.(London) G18, 1365 (1992)

R.M.Adam, S.A.Sofianos, H.Fiedeldey, M.Fabre de la Ripelle

Integro-Differential Equation Approach Extended to Larger Nuclei

NUCLEAR STRUCTURE 4He, 12C, 16O; calculated binding energy. Integro-differential equation approach.

doi: 10.1088/0954-3899/18/8/011
Citations: PlumX Metrics

1992SO03      Nucl.Phys. A540, 199 (1992)

S.A.Sofianos, H.Fiedeldey, R.Lipperheide, G.Pantis, P.E.Hodgson

Dispersive Corrections to the Resonating Group αα Potential

NUCLEAR REACTIONS 4He(α, α), E(cm) ≈ 20-70 MeV; calculated phase shifts vs E. Resonating group method, phenomenological potentials, dispersive corrections.

doi: 10.1016/0375-9474(92)90200-4
Citations: PlumX Metrics

1991AD04      J.Phys.(London) G17, L157 (1991)

R.M.Adam, H.Fiedeldey, S.A.Sofianos, M.Fabre de la Ripelle

The Integrodifferential Equation Approach Compared with Shell Model Calculations on the 4He Nucleus

NUCLEAR STRUCTURE 4He; calculated binding energy. Integrodifferential approach, shell model comparison.

doi: 10.1088/0954-3899/17/9/003
Citations: PlumX Metrics

1991AL16      Phys.Rev. C44, 1606 (1991)

L.J.Allen, H.Fiedeldey, S.A.Sofianos, K.Amos, C.Steward

Heavy-Ion Potentials Derived from Strong-Absorption-Model Parametrizations of the Scattering Function

NUCLEAR REACTIONS 12C(12C, 12C), E=360 MeV; 40Ca(16O, 16O), E=1503 MeV; calculated potentials vs inter-nuclear separation, S-functions. Strong absorption model, inverse scattering problem.

doi: 10.1103/PhysRevC.44.1606
Citations: PlumX Metrics

1991OE01      Phys.Rev. C43, 25 (1991)

W.Oehm, S.A.Sofianos, H.Fiedeldey, M.Fabre de la Ripelle

Integro-Differential Equation Approach. II. Triton and α-Particle Wave Functions, Graphical Plots

NUCLEAR STRUCTURE 3H; calculated wave functions, binding energy. 4He; calculated wave functions. Integro-differential equation approach.

doi: 10.1103/PhysRevC.43.25
Citations: PlumX Metrics

1991OE02      Phys.Rev. C44, 81 (1991)

W.Oehm, H.Fiedeldey, S.A.Sofianos, M.Fabre de la Ripelle

Integro-Differential Equation Approach. III. Triton and α-Particle Bound States. Realistic Forces and Two-Body Correlations

NUCLEAR STRUCTURE A=3, 4; calculated binding energies, Faddeev amplitudes.

doi: 10.1103/PhysRevC.44.81
Citations: PlumX Metrics

1991ST07      Phys.Rev. C44, 1493 (1991)

C.Steward, K.Amos, H.Leeb, L.J.Allen, H.Fiedeldey, S.A.Sofianos

Mass and Charge Attributes of Heavy Ion Potentials Obtained by Inversion

NUCLEAR REACTIONS 12C, 40Ca, 90Zr, 208Pb(16O, 16O), E=1503 MeV; calculated S-function. 208Pb(16O, 16O), E=1.503 GeV; calculated σ(θ). WKB inverse scattering model.

doi: 10.1103/PhysRevC.44.1493
Citations: PlumX Metrics

1990OE01      Phys.Rev. C42, 2322 (1990)

W.Oehm, S.A.Sofianos, H.Fiedeldey, M.Fabre de la Ripelle

Integrodifferential Equation Approach. I. Triton and α-Particle Binding Energies

NUCLEAR STRUCTURE 3H, 3,4He; calculated binding energies. Integrodifferential equation approach, hyperspherical coordinates.

doi: 10.1103/PhysRevC.42.2322
Citations: PlumX Metrics

1990PA16      Phys.Rev. C42, 142 (1990)

A.Papastylianos, S.A.Sofianos, H.Fiedeldey, E.O.Alt

Complex Local Potential by Marchenko Inversion of Partly Real and Partly Complex Phase Shift

NUCLEAR REACTIONS 2H(n, n), E ≤ 600 MeV; calculated quartet channel phase shifts; deduced equivalent local two-body potentials. Exact few-body theory.

doi: 10.1103/PhysRevC.42.142
Citations: PlumX Metrics

1990SO05      Phys.Rev. C42, R506 (1990)

S.A.Sofianos, A.Papastylianos, H.Fiedeldey, E.O.Alt

Role of Levinson's Theorem in Neutron-Deuteron Quartet S-Wave Scattering

NUCLEAR REACTIONS 2H(n, n), E ≤ 400 MeV; analyzed quartet S-wave phase shift behavior; deduced unphysical bound state role.

doi: 10.1103/PhysRevC.42.R506
Citations: PlumX Metrics

1989FA10      Few-Body Systems 6, 157 (1989)

M.Fabre de la Ripelle, H.Fiedeldey, S.A.Sofianos

Several Versions of the Integro-Differential Equation Approach to Bound Systems

NUCLEAR STRUCTURE A=3, 4; calculated binding energy. Integro-differential equation approach, special versions.

1988FA04      Phys.Rev. C38, 449 (1988)

M.Fabre de la Ripelle, H.Fiedeldey, S.A.Sofianos

Integrodifferential Equation for Few- and Many-Body Systems

NUCLEAR STRUCTURE A=3, 4; calculated effective potential parameters, binding energies.

doi: 10.1103/PhysRevC.38.449
Citations: PlumX Metrics

1988SO03      Phys.Lett. 205B, 163 (1988)

S.A.Sofianos, H.Fiedeldey, M.Fabre de la Ripelle

Model Ground State Calculations with Two-Variable Integro-Differential Equations for 16O

NUCLEAR STRUCTURE 16O; calculated binding energy. Variational, Green function Monte Carlo, hypernetted chain methods.

doi: 10.1016/0370-2693(88)91640-1
Citations: PlumX Metrics

1987SO04      Phys.Rev. C35, 894 (1987)


Quantal Equivalent Local Potentials from Resonating Group Method n + α Nonlocal Interactions

NUCLEAR REACTIONS 4He(n, n), E(cm)=10 MeV; calculated equivalent local potential characteristics.

doi: 10.1103/PhysRevC.35.894
Citations: PlumX Metrics

1986FI05      Phys.Rev. C33, 1581 (1986)

H.Fiedeldey, S.A.Sofianos, L.J.Allen, R.Lipperheide

Determination of Nonlocal Potentials from the Phase Shifts

NUCLEAR REACTIONS 40Ca(n, n), E=20, 50, 100 MeV; calculated phase shifts; deduced nonlocal potentials. WKB approximation.

doi: 10.1103/PhysRevC.33.1581
Citations: PlumX Metrics

1985LI05      Z.Phys. A320, 265 (1985)

R.Lipperheide, H.Fiedeldey, E.W.Schmid, S.A.Sofianos

Equivalent Local Potential for the Fish Bone Optical Potential by Inversion of Its Phase Shifts

NUCLEAR REACTIONS 16O(α, α), E(cm)=30, 40, 50 MeV; calculated phase shifts; deduced surface region Pauli barrier evidence in local equivalent potentials. Fish bone optical model, inversion procedures.

doi: 10.1007/BF01881274
Citations: PlumX Metrics

1985SO06      Phys.Rev. C31, 2300 (1985)

S.A.Sofianos, H.Fiedeldey, L.J.Allen, R.Lipperheide

Equivalent Local Potentials for Nucleon-Alpha Scattering

NUCLEAR REACTIONS 4He(n, n), E=15-25 MeV; calculated equivalent local potentials.

doi: 10.1103/PhysRevC.31.2300
Citations: PlumX Metrics

1985SO07      Phys.Rev. C32, 400 (1985)

S.A.Sofianos, H.Fiedeldey, W.Sandhas

Four-Nucleon Scattering in the K-Matrix Approach with Improved Treatment of the (2 + 2) Channels

NUCLEAR REACTIONS 3He(p, p), 2H(d, p), (d, n), E=13.8-81 MeV; calculated σ(θ) above break-up threshold. K-matrix approach, improved treatment of (2+2)-subsystem amplitude, Alt-Grassberger-Sandhas equations.

doi: 10.1103/PhysRevC.32.400
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1985SO08      Nucl.Phys. A441, 573 (1985)

S.A.Sofianos, H.Fiedeldey

Comparison of Several Equivalent Local Potentials for Microscopic Nonlocal Nα Potentials

NUCLEAR REACTIONS 4He(n, n), (p, p), E=10, 20 MeV; calculated phase shifts; deduced effective nuclear force repulsiveness. Microscopic nonlocal potentials.

doi: 10.1016/0375-9474(85)90439-7
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1984FI11      Phys.Rev. C30, 434 (1984)

H.Fiedeldey, R.Lipperheide, K.Naidoo, S.A.Sofianos

Semiclassical and Quantal Inversion of Nuclear Scattering at Fixed Energy

NUCLEAR REACTIONS 4He(α, α), E=23.1, 53.4, 120 MeV; calculated deflection, scattering function, potential vs separation distance. 58Ni(p, p), E=36, 55, 100.4 MeV; 4He(n, n), E(cm)=30 MeV; 12C(α, α), E=104 MeV; calculated potential vs separation distance. Semi-classical, quantal inversion problems.

doi: 10.1103/PhysRevC.30.434
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1984NA11      Nucl.Phys. A419, 13 (1984)

K.Naidoo, H.Fiedeldey, S.A.Sofianos, R.Lipperheide

Potential Inversion for p- and α-Scattering at Fixed Energy

NUCLEAR REACTIONS 58Ni(p, p), E=100.4 MeV; 4He(α, α), E=40, 120 MeV; 12C(α, α), E=104 MeV; calculated potential vs separation distance. Inversion technique.

doi: 10.1016/0375-9474(84)90281-1
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1983FI07      Z.Phys. A311, 339 (1983)

H.Fiedeldey, S.A.Sofianos

Nonlocal Potentials and Their Exact and Approximate Local and Velocity-Dependent Equivalents

NUCLEAR REACTIONS 40Ca(n, n), E=24 MeV; calculated approximation to exact equivalent potential, nonlocal potential damping factor.

doi: 10.1007/BF01415690
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