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NSR database version of May 10, 2024.

Search: Author = J.M.Sparenberg

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2019GA27      Phys.Rev. C 100, 035805 (2019)

D.Gaspard, J.-M.Sparenberg, Q.Wenda, D.Baye

Complex-energy analysis of proton-proton fusion

NUCLEAR REACTIONS 1H(p, e+ν)2H, E=0-5 MeV; calculated effective-range functions of the proton-proton 1S0 scattering for the Reid93 potential, correction functions for different potential models, linearized matrix element of the weak capture, three dimensional plots of model-independent parameterization Λ, bound state and resonance poles, astrophysical S factor for an energy range covering solar-core and early Universe temperatures.

doi: 10.1103/PhysRevC.100.035805
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2018GA10      Phys.Rev. C 97, 044003 (2018)

D.Gaspard, J.-M.Sparenberg

Effective-range function methods for charged particle collisions

NUCLEAR REACTIONS 1H(p, X), E near threshold; calculated standard effective-range function, and reduced effective-range function using quantum collision theory; deduced resonances and weakly bound states using standard effective-range function and reduced effective-range function and Pade approximants.

doi: 10.1103/PhysRevC.97.044003
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2017RA16      Phys.Rev. C 96, 034601 (2017)

O.L.Ramirez Suarez, J.-M.Sparenberg

Phase-shift parametrization and extraction of asymptotic normalization constants from elastic-scattering data

NUCLEAR REACTIONS 12C(α, α), E(cm)<10 MeV; analyzed p-wave and d-wave scattering phase shifts with simplified effective-range function; deduced asymptotic normalization constant (ANC) for -45 keV, 1- and -245 keV, 2+ bound states of 16O, lying below the 12C+α threshold.

doi: 10.1103/PhysRevC.96.034601
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2015MI10      Phys.Rev. C 91, 054004 (2015)

B.Midya, J.Evrard, S.Abramowicz, O.L.Ramirez Suarez, J.-M.Sparenberg

Supersymmetric inversion of effective-range expansions

NUCLEAR REACTIONS 1H, 1n(p, p), E=350 MeV; analyzed scattering phase shifts from experimental data and compared with theoretical phase shifts from effective-range-function fits. Optimal inversion technique with parameterization of scattering phase shifts in terms of either scattering-matrix poles or effective-range Pade expansion.

doi: 10.1103/PhysRevC.91.054004
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2013RA19      Phys.Rev. C 88, 014601 (2013)

O.L.Ramirez Suarez, J.-M.Sparenberg

Precise determination of the effective-range parameters up to an arbitrary order

NUCLEAR REACTIONS 3He, 12C(α, X), 16O(p, X); calculated effective range parameters, R-matrix derivatives using Lagrange mesh technique, Coulomb functions. Potential model. Relevance to asymptotic normalization constants (ANC).

doi: 10.1103/PhysRevC.88.014601
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2011PU02      Phys.Rev.Lett. 106, 152301 (2011)

A.Pupasov, B.F.Samsonov, J.-M.Sparenberg, D.Baye

Reconstructing the Nucleon-Nucleon Potential by a New Coupled-Channel Inversion Method

doi: 10.1103/PhysRevLett.106.152301
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2011SF01      Int.J.Mod.Phys. E20, 831 (2011)

C.Sfienti, G.Raciti, P.Capel, D.Baye, M.De Napoli, F.Giacoppo, E.Rapisarda, G.Cardella, P.Descouvemont, J.-M.Sparenberg, C.Mazzocchi

17F breakup reactions: A touchstone for indirect measurements

doi: 10.1142/S0218301311018782
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2011SF02      J.Phys.:Conf.Ser. 312, 042022 (2011)

C.Sfienti, G.Raciti, P.Capel, D.Baye, M.De Napoli, F.Giacoppo, E.Rapisarda, G.Cardella, P.Descouvemont, C.Mazzocchi, J.-M.Sparenberg

17F breakup reactions: A touchstone for indirect measurements

NUCLEAR REACTIONS Pb(17F, p16O), E=40 MeV/nucleon;measured reaction fragments using Si-strip detector; deduced breakup unnormalized σ(Erelative); calculated breakup σ(Erelative).

doi: 10.1088/1742-6596/312/4/042022
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2011SP03      J.Phys.:Conf.Ser. 312, 082040 (2011)

J.-M.Sparenberg, P.Capel, D.Baye

Deducing physical properties of weakly bound states from low-energy scattering data. Application to 16O and 12C+α

NUCLEAR REACTIONS 12C(α, α'), E=low; calculated d-wave inversion potentials, effective-range function using published data close to 245 keV 2+ state of 16O; deduced ANC (asymptotic normalization constant).

doi: 10.1088/1742-6596/312/4/082040
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2010DE07      Phys.Rev. C 81, 029803 (2010)

P.Descouvemont, M.Dufour, J.-M.Sparenberg

Comment on "Low-energy cross sections in the 12C(α, γ)16O reaction"

NUCLEAR REACTIONS 12C(α, γ)16O; analyzed σ, E1 and E2 S factors. Discussed validity of potential model.

doi: 10.1103/PhysRevC.81.029803
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2010DR06      Nucl.Phys. A845, 88 (2010)

T.Druet, D.Baye, P.Descouvemont, J.-M.Sparenberg

CDCC calculations with the Lagrange-mesh technique

NUCLEAR REACTIONS 58Ni(d, d), (d, X), E=80 MeV; calculated elastic and breakup σ(θ) using Lagrange-mesh technique with continuum discretized coupled-channel model. Comparison with data normalized to Rutherford σ.

doi: 10.1016/j.nuclphysa.2010.04.058
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2010SP01      Phys.Rev. C 81, 011601 (2010)

J.-M.Sparenberg, P.Capel, D.Baye

Influence of low-energy scattering on loosely bound states

NUCLEAR REACTIONS 16O(n, γ), (p, γ), E not given; 12C(α, γ), E not given; calculated asymptotic normalization constants (ANC) as a function of binding energy for subthreshold bound states using the analytic continuation of the scattering (S) matrix in the complex wave-number plane.

doi: 10.1103/PhysRevC.81.011601
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2005SP06      Nucl.Phys. A758, 423c (2005)

J.-M.Sparenberg

Hybrid potential/R-matrix models for the 12C + α system

NUCLEAR REACTIONS 12C(α, α), E ≈ 2-6 MeV; analyzed phase shifts; deduced model parameters. Inversion technique.

doi: 10.1016/j.nuclphysa.2005.05.078
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2004FU15      Nucl.Phys. A738, 495 (2004)

Y.Fujiwara, K.Miyagawa, M.Kohno, Y.Suzuki, D.Baye, J.-M.Sparenberg

A Consistent 3α and 2αΛ Faddeev Calculation using the 2α RGM Kernel

doi: 10.1016/j.nuclphysa.2004.04.095
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2004FU19      Phys.Rev. C 70, 024002 (2004)

Y.Fujiwara, K.Miyagawa, M.Kohno, Y.Suzuki, D.Baye, J.-M.Sparenberg

Faddeev calculation of 3α and ααΛ systems using αα resonating-group method kernels

NUCLEAR STRUCTURE 12C; calculated 3α-cluster states energies. 9Be; calculated hypernucleus ground and excited states energies. Faddeev calculations, two-cluster resonating-group method kernels.

doi: 10.1103/PhysRevC.70.024002
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2004FU22      Phys.Rev. C 70, 037001 (2004)

Y.Fujiwara, M.Kohno, K.Miyagawa, Y.Suzuki, J.-M.Sparenberg

Faddeev calculation of 6ΛΛHe using SU6 quark-model baryon-baryon interactions

NUCLEAR STRUCTURE 6He; calculated two-Λ hypernucleus binding energy. Faddeev formalism, two-cluster resonating-group method.

doi: 10.1103/PhysRevC.70.037001
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2004SP02      Phys.Rev. C 69, 034601 (2004)

J.-M.Sparenberg

Clarification of the relationship between bound and scattering states in quantum mechanics: Application to 12C + α

NUCLEAR REACTIONS 12C(α, α), E(cm) ≈ 2-5 MeV; analyzed data; deduced phase shifts.asymptotic normalization constant, potential features. Phase-equivalent supersymmetric partner potentials.

doi: 10.1103/PhysRevC.69.034601
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2004SP04      Nucl.Phys. A738, 416 (2004)

J.-M.Sparenberg

Deducing the asymptotic normalization constant of the 2+ subthreshold state in 16O from 12C + α elastic scattering

NUCLEAR REACTIONS 12C(α, α), E(cm)=0-7 MeV; analyzed phase shifts. 16O level deduced asymptotic normalization constant. R-matrix analysis.

doi: 10.1016/j.nuclphysa.2004.04.077
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2003AL23      Phys.Rev. C 68, 024314 (2003)

J.Al-Khalili, C.Barbieri, J.Escher, B.K.Jennings, J.-M.Sparenberg

Many-body approach to proton emission and the role of spectroscopic factors

NUCLEAR STRUCTURE 17F; calculated overlap wave functions, proton decay width. Two-potential approach.

doi: 10.1103/PhysRevC.68.024314
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2002SP05      Europhys.Lett. 59, 507 (2002)

J.-M.Sparenberg

Toward a spin- and parity-independent nucleon-nucleon potential

NUCLEAR REACTIONS 1H(n, n), (p, p), E(cm)=0-140 MeV; analyzed phase shifts; deduced potential features. Supersymmetric inversion method.

doi: 10.1209/epl/i2002-00108-7
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2002SP08      Phys.Rev. C 66, 055210 (2002)

J.-M.Sparenberg, H.Leeb

Neutron charge radius deduced from Bragg reflection technique

doi: 10.1103/PhysRevC.66.055210
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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
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2000SP03      Phys.Rev. C61, 024605 (2000)

J.-M.Sparenberg, D.Baye, H.Leeb

Phase-Equivalent Energy-Dependent Potentials

NUCLEAR REACTIONS 16O(α, X), E=0, 150 MeV; calculated potential, bound state energies, transformation for removal of forbidden bound states. Extended supersymmetric transformations.

doi: 10.1103/PhysRevC.61.024605
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2000SP07      Phys.Rev. C61, 054610 (2000)

J.-M.Sparenberg, D.Baye, B.Imanishi

Coupled-Reaction-Channel Calculations of the 16O + 17O and 16O + 17F Charge-Symmetric Systems

NUCLEAR REACTIONS 17O, 17F(16O, 16O), (16O, 16O'), E(cm)=5-40 MeV; calculated σ(θ). 17O, 17F(16O, X), E(cm)=5-20 MeV; calculated reaction, fusion, inelastic σ. Three-body coupled-channels model, comparisons with data.

doi: 10.1103/PhysRevC.61.054610
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1999HE14      Phys.Lett. 455B, 1 (1999)

M.Hesse, D.Baye, J.-M.Sparenberg

Supersymmetry in a Three-Body Model of Halo Nuclei

NUCLEAR STRUCTURE 6He, 11Li, 14Be; calculated binding energies, radii. Three-body model with supersymmetric transformations. Comparison with data, other models.

doi: 10.1016/S0370-2693(99)00429-3
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1998HE26      Nucl.Phys. A640, 37 (1998)

M.Hesse, J.-M.Sparenberg, F.Van Raemdonck, D.Baye

Coupled-Channel R-Matrix Method on a Lagrange Mesh

NUCLEAR REACTIONS 1H(p, p), (n, n), E < 100 MeV; 4He(α, α), E < 20 MeV; calculated phase shifts. Lagrange mesh method.

NUCLEAR STRUCTURE 2H; calculated binding energy. Lagrange mesh method.

doi: 10.1016/S0375-9474(98)00435-7
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1997SP02      Phys.Rev. C55, 2175 (1997)

J.-M.Sparenberg, D.Baye

Inverse Scattering with Singular Potentials: A supersymmetric approach

NUCLEAR REACTIONS 1H(n, n), (p, p), E=low; calculated scattering length. 1H(n, n), (p, p), E ≤ 350 MeV; analyzed phase shifts; deduced potential characteristics. Inverse scattering, singular potentials, supersymmetric approach.

doi: 10.1103/PhysRevC.55.2175
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1996BA26      Nucl.Phys. A599, 435 (1996)

D.Baye, G.Levai, J.-M.Sparenberg

Phase-Equivalent Complex Potentials

NUCLEAR REACTIONS 16O(α, α), E not given; calculated effective potential. 20Ne deduced level energies from potential. Phase equivalent complex potentials.

doi: 10.1016/0375-9474(95)00487-4
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1996LI38      Phys.Rev. C54, 2477 (1996)

E.Lienard, D.Baye, Th.Delbar, P.Descouvemont, P.Duhamel, W.Galster, M.Kurokawa, P.Leleux, I.Licot, P.Lipnik, C.Michotte, T.Motobayashi, A.Ninane, J.-M.Sparenberg, J.Vanhorenbeeck, J.Vervier

Evidence for One-Pion Charge Exchange in 13N + 13C Elastic Scattering Near the Coulomb Barrier

NUCLEAR REACTIONS 13C(13N, 13N), E(cm)=8.15, 10, 14.75 MeV; measured σ(θ); deduced optical model parameters, parity term.

doi: 10.1103/PhysRevC.54.2477
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1996SP02      Phys.Rev. C54, 1309 (1996)

J.-M.Sparenberg, D.Baye

Supersymmetry between Deep and Shallow Optical Potentials for 16O + 16O Scattering

NUCLEAR REACTIONS 16O(16O, 16O), E(cm)=10-35 MeV; analyzed optical potentials; deduced deep, shallow potentials associated supersymmetry features. Removal of complex normalizable solutions from deep optical potenitals.

doi: 10.1103/PhysRevC.54.1309
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