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NSR database version of May 24, 2024.

Search: Author = S.Aoyama

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2018AO02      Phys.Rev. C 97, 054305 (2018)

S.Aoyama, D.Baye

Ab initio study of the Jπ = 0± continuum structures in 4He

NUCLEAR STRUCTURE 4He; calculated elastic phase shift and magnitudes of the S matrix, off diagonal part of the S matrix, and eigenphases of the t+p, 3He+n, and d+d channels in the continuum structure of 0+ and 0- states. Calculations performed using an ab initio reaction theory with the microscopic R-matrix method (MRM).

doi: 10.1103/PhysRevC.97.054305
Citations: PlumX Metrics


2016AO01      Prog.Theor.Exp.Phys. 2016, 123D01 (2016)

S.Aoyama

A theoretical treatment of four-body resonances by using the complex scaling method

NUCLEAR STRUCTURE 4He; calculated phase shifts, energy eigenvalues for 0- and 0+ states. Four-body system.

doi: 10.1093/ptep/ptw171
Citations: PlumX Metrics


2012AR10      Prog.Theor.Phys.(Kyoto), Suppl. 196, 483 (2012)

K.Arai, S.Aoyama, Y.Suzuki, P.Descouvemont, D.Baye

Tensor Force Manifestations in Ab Initio Study of the 2H(d, γ)4He, 2H(d, p)3H, and 2H(d, n)3He Reactions

NUCLEAR REACTIONS 2H(d, γ)4He, 2H(d, p)3H, 2H(d, n)3He, E(cm)<10 MeV; calculated S-factors. Extended microscopic cluster model with realistic nucleon-nucleon interaction, comparison with available data.

doi: 10.1143/PTPS.196.483
Citations: PlumX Metrics


2011AO01      Int.J.Mod.Phys. E20, 775 (2011)

S.Aoyama, K.Arai, P.Descouvemont, Y.Suzuki, D.Baye

Extended microscopic cluster model study of four nucleon scattering

doi: 10.1142/S0218301311018654
Citations: PlumX Metrics


2011AR12      Phys.Rev.Lett. 107, 132502 (2011)

K.Arai, S.Aoyama, Y.Suzuki, P.Descouvemont, D.Baye

Tensor Force Manifestations in Ab Initio Study of the 2H(d, γ)4He, 2H(d, p)3H, and 2H(d, n)3He Reactions

NUCLEAR REACTIONS 2H(d, γ), (d, p), (d, n), E(cm)<10 MeV; calculated wave functions, phase shifts, σ, S-factors. Multichannel microscopic cluster model, ab initio calculations, comparison with experimental data.

doi: 10.1103/PhysRevLett.107.132502
Citations: PlumX Metrics


2010AR02      Phys.Rev. C 81, 037301 (2010)

K.Arai, S.Aoyama, Y.Suzuki

Microscopic cluster model study of 3He+p scattering

NUCLEAR REACTIONS 3He(p, p), E(cm)=0-10 MeV; calculated scattering phase shifts using microscopic cluster model. Comparison with experimental data.

doi: 10.1103/PhysRevC.81.037301
Citations: PlumX Metrics


2009AO03      Phys.Rev. C 80, 021304 (2009)

S.Aoyama, N.Itagaki

Di-neutron correlations in 7H

NUCLEAR STRUCTURE 7H; calculated energy of the ground state using AMD Slater determinants with various t+n+n+n configurations. Comparison with similar calculations for 8He.

doi: 10.1103/PhysRevC.80.021304
Citations: PlumX Metrics


2009AR09      Phys.Rev. C 80, 027301 (2009)

K.Arai, S.Aoyama

Resonance states of 7He in a microscopic cluster model

NUCLEAR STRUCTURE 5,6,7He; calculated levels, J, π, resonances, nucleon-nucleon potentials. α+n+n+n four-cluster model calculations. Comparison with experimental data.

NUCLEAR REACTIONS 6He(n, n), E(cm)<10 MeV; calculated P-wave elastic scattering phase shifts.

doi: 10.1103/PhysRevC.80.027301
Citations: PlumX Metrics


2008IT06      Phys.Rev. C 78, 017306 (2008)

N.Itagaki, M.Ito, K.Arai, S.Aoyama, Tz.Kokalova

Mixing of di-neutron components in 8He

NUCLEAR STRUCTURE 8He; calculated configurations, convergence of excited states, wave functions. Tohsaki-Horincki-Schuck-Ropke wave functions.

doi: 10.1103/PhysRevC.78.017306
Citations: PlumX Metrics


2007AO03      Nucl.Phys. A790, 307c (2007)

S.Aoyama, N.Itagaki, M.Oi

A systematic analysis of cluster components in He-isotopes by using a new AMD approach

NUCLEAR STRUCTURE 4,5,6,7,8,9,10He; calculated binding energies, clustering effects. Antisymmetrized molecular dynamics.

doi: 10.1016/j.nuclphysa.2007.03.055
Citations: PlumX Metrics


2006AO01      Phys.Rev. C 74, 017307 (2006)

S.Aoyama, N.Itagaki, M.Oi

Systematic analyses of the t-t clustering effect in He isotopes

NUCLEAR STRUCTURE 4,5,6,7,8,9,10He; calculated binding energies, clustering effects. Antisymmetrized molecular dynamics, generator coordinate method.

doi: 10.1103/PhysRevC.74.017307
Citations: PlumX Metrics


2006AO02      Phys.Scr. T125, 100 (2006)

S.Aoyama, T.Myo, K.Kato, K.Ikeda

Coulomb breakup and pairing excitation of the two-neutron halo nucleus 11Li

NUCLEAR STRUCTURE 11Li; calculated Coulomb breakup σ(E), pairing excitation, excited state J, π.

doi: 10.1088/0031-8949/2006/T125/023
Citations: PlumX Metrics


2006AR16      Phys.Rev. C 74, 034305 (2006)

K.Arai, K.Kato, S.Aoyama

Di-trinucleon resonance states of A = 6 systems in a microscopic cluster model

NUCLEAR STRUCTURE 6He, 6Li, 6Be; calculated resonance energies, widths, J, π. Cluster model.

doi: 10.1103/PhysRevC.74.034305
Citations: PlumX Metrics


2006IT02      Phys.Rev. C 73, 034310 (2006)

N.Itagaki, H.Masui, M.Ito, S.Aoyama, K.Ikeda

Simplified method to include the tensor contribution in α-cluster model

NUCLEAR STRUCTURE 8Be, 12C; calculated 0+ α-cluster states energies, role of tensor interaction, spin-orbit contribution.

doi: 10.1103/PhysRevC.73.034310
Citations: PlumX Metrics


2005IT04      Phys.Rev. C 71, 064307 (2005)

N.Itagaki, H.Masui, M.Ito, S.Aoyama

Simplified modeling of cluster-shell competition

NUCLEAR STRUCTURE 10Be; calculated ground state energy, contribution of the cluster-shell and spin-orbit interactions. 9,10Be, 12C, 20Ne; calculated excited state energies, contribution of the cluster-shell and spin-orbit interactions.

doi: 10.1103/PhysRevC.71.064307
Citations: PlumX Metrics


2004AO05      Nucl.Phys. A738, 362 (2004)

S.Aoyama, N.Itagaki

Systematic analyses on H- and He-isotopes by using and extended AMD approach

NUCLEAR STRUCTURE 3,4,5,6,7H, 4,5,6,7,8,9,10He; calculated binding energies. 6He; calculated ground and excited states two-neutron separation energies, radii. Antisymmetrized molecular dynamics approach.

doi: 10.1016/j.nuclphysa.2004.04.062
Citations: PlumX Metrics


2004IT08      Nucl.Phys. A738, 17 (2004)

N.Itagaki, S.Aoyama, T.Otsuka, T.Yoshida, S.Okabe, K.Ikeda

Exotic cluster structure in light neutron-rich nuclei

NUCLEAR STRUCTURE 10,12Be, 21,22,23,24,25,26,27Ne; calculated binding energies, cluster features. Antisymmetrized molecular dynamics.

doi: 10.1016/j.nuclphysa.2004.04.006
Citations: PlumX Metrics


2004IT13      Phys.Rev. C 70, 054307 (2004)

N.Itagaki, S.Aoyama, S.Okabe, K.Ikeda

Cluster-shell competition in light nuclei

NUCLEAR STRUCTURE 8,10Be, 10B, 12C, 16O; calculated binding energies, contributions from cluster structure. 12C calculated transition probabilities. Antisymmetrized molecular dynamics, cluster-shell competition discussed.

doi: 10.1103/PhysRevC.70.054307
Citations: PlumX Metrics


2004MY01      Nucl.Phys. A738, 298 (2004)

T.Myo, S.Aoyama, K.Kato, K.Ikeda

Resonances and continuum states in the breakup of halo nuclei

NUCLEAR STRUCTURE 11Li; calculated Coulomb breakup strengths, continuum states contributions. Complex scaling method.

doi: 10.1016/j.nuclphysa.2004.04.049
Citations: PlumX Metrics


2003AO01      Phys.Rev. C 68, 034313 (2003)

S.Aoyama

New method of analytic continuation in the coupling constant with the complex scaling method

NUCLEAR STRUCTURE 6He; calculated resonance energy, related features. Analytic continuation in the coupling constant with the complex scaling method.

doi: 10.1103/PhysRevC.68.034313
Citations: PlumX Metrics


2003AO04      Nucl.Phys. A722, 474c (2003)

S.Aoyama

Where is the ground state of 10He?

NUCLEAR STRUCTURE 10He; calculated ground state and resonance energies, configurations. Analytic continuation in the coupling constant.

doi: 10.1016/S0375-9474(03)01411-8
Citations: PlumX Metrics


2003AO05      Mod.Phys.Lett. A 18, 422 (2003)

S.Aoyama

Analyses of three-body s-wave resonances with analytic continuation in the coupling constant

NUCLEAR STRUCTURE 10He; calculated three-body resonance features. Analytic continuation in the coupling constant.

doi: 10.1142/S0217732303010612
Citations: PlumX Metrics


2003IT09      Phys.Rev. C 68, 054302 (2003)

N.Itagaki, A.Kobayakawa, S.Aoyama

New description of light nuclei by extending the AMD approach

NUCLEAR STRUCTURE 6He, 10,12Be; calculated ground and excited states energies, J, π. Extended antisymmetrized molecular dynamics approach.

doi: 10.1103/PhysRevC.68.054302
Citations: PlumX Metrics


2003MY03      Phys.Lett. B 576, 281 (2003)

T.Myo, S.Aoyama, K.Kato, K.Ikeda

Three-body Coulomb breakup of 11Li in the complex scaling method

NUCLEAR STRUCTURE 11Li; calculated Coulomb breakup strengths. Complex scaling method, comparison with data.

doi: 10.1016/j.physletb.2003.10.011
Citations: PlumX Metrics


2003MY04      Nucl.Phys. A722, 449c (2003)

T.Myo, S.Aoyama, K.Kato, K.Ikeda

Resonances and continuums in the three-body breakup of halo nuclei

NUCLEAR STRUCTURE 11Li; calculated excited states energies, dipole strength distribution, Coulomb breakup σ. Three-body model, complex scaling method.

doi: 10.1016/S0375-9474(03)01406-4
Citations: PlumX Metrics


2003MY05      Mod.Phys.Lett. A 18, 166 (2003)

T.Myo, K.Kato, S.Aoyama, K.Ikeda

Resonances and continuums in the three-body breakup of halo nuclei with the complex scaling method

NUCLEAR STRUCTURE 11Li; calculated excited states energies, dipole strength distribution, Coulomb breakup σ. Three-body model, complex scaling method.

doi: 10.1142/S021773230301017X
Citations: PlumX Metrics


2002AO01      Phys.Rev.Lett. 89, 052501 (2002)

S.Aoyama

Theoretical Prediction for the Ground State of 10He with the Method of Analytic Continuation in the Coupling Constant

NUCLEAR STRUCTURE 9,10He, 11Li; calculated ground and excited states energies, configurations. Analytic continuation in the coupling constant.

doi: 10.1103/PhysRevLett.89.052501
Citations: PlumX Metrics


2002AO02      Prog.Theor.Phys.(Kyoto) 107, 543 (2002)

S.Aoyama, K.Kato, T.Myo, K.Ikeda

The Binding Mechanism and a Low-Lying Resonance in 11Li

NUCLEAR STRUCTURE 11Li; calculated level energies, configurations, resonance features.

doi: 10.1143/PTP.107.543
Citations: PlumX Metrics


2002AO04      Prog.Theor.Phys.(Kyoto), Suppl. 146, 540 (2002)

S.Aoyama, K.Kato, K.Ikeda

Three-Body Cluster Resonances in 11Li and 10He

NUCLEAR STRUCTURE 11Li; calculated levels, J, π, configurations, resonance features. 10He; calculated possible ground-state configuration. Complex scaling method.

doi: 10.1143/PTPS.146.540
Citations: PlumX Metrics


2002KA76      Prog.Theor.Phys.(Kyoto), Suppl. 146, 179 (2002)

K.Kato, T.Myo, S.Aoyama, K.Ikeda

Beyond the Core+n+n Model Based on the Complex Scaling Method

NUCLEAR STRUCTURE 6He, 10,11Li; calculated levels, J, π; deduced role of dynamical coupling. 11Li; calculated E1 strength distribution. Complex scaling method, comparison with data.

NUCLEAR REACTIONS Pb(6He, 2nα), E=240 MeV/nucleon; calculated Coulomb dissociation σ. Complex scaling method, comparison with data.


2002MA77      Prog.Theor.Phys.(Kyoto), Suppl. 146, 589 (2002)

H.Masui, S.Aoyama, T.Myo, K.Kato, K.Ikeda

Study of the s-Wave Properties for 10Li through the Analysis of the Break-Up Reaction

NUCLEAR STRUCTURE 10Li; analyzed break-up reaction data; deduced neutron-core potential features.

doi: 10.1143/PTPS.146.589
Citations: PlumX Metrics


2002MY01      Prog.Theor.Phys.(Kyoto) 108, 133 (2002)

T.Myo, S.Aoyama, K.Kato, K.Ikeda

Extended 9Li+n+n Three-Body Model of 11Li with a Pairing Correlation in 9Li

NUCLEAR STRUCTURE 11Li; calculated binding energy, radius. 9,10,11Li; calculated pairing correlations, blocking effects, related features. Extended three-body model.

doi: 10.1143/PTP.108.133
Citations: PlumX Metrics


2002MY03      Prog.Theor.Phys.(Kyoto), Suppl. 146, 601 (2002)

T.Myo, S.Aoyama, K.Kato, K.Ikeda

Coupled Channel 9Li+n+n Model of 11Li

NUCLEAR STRUCTURE 10,11Li; calculated levels, J, π, widths, configurations, radii. Coupled channel three-body model.

doi: 10.1143/PTPS.146.601
Citations: PlumX Metrics


2001AO04      Prog.Theor.Phys.(Kyoto), Suppl. 142, 35 (2001)

S.Aoyama, K.Kato, K.Ikeda

Three-Body Binding and Resonant Mechanisms in Neutron-Rich Light Nuclei Far from Stability Line - Pairing Correlation in Borromean Nuclei -

NUCLEAR STRUCTURE 6,10He, 10,11Li, 10N; calculated level energies, widths, resonance states, pairing correlation effects. Core-plus-neutrons model, complex scaling method.

doi: 10.1143/PTPS.142.35
Citations: PlumX Metrics


2001MA37      Nucl.Phys. A684, 609c (2001)

H.Masui, S.Aoyama, T.Myo, K.Kato, K.Ikeda

Study of Resonant and Virtual States with the Complex Scaling Method and the Developments

NUCLEAR STRUCTURE 5He, 10Li; calculated virtual states energies, related features. Jost function method.

doi: 10.1016/S0375-9474(01)00452-3
Citations: PlumX Metrics


2001MY04      Phys.Rev. C63, 054313 (2001)

T.Myo, K.Kato, S.Aoyama, K.Ikeda

Analysis of 6He Coulomb Breakup in the Complex Scaling Method

NUCLEAR STRUCTURE 6He; calculated resonance, continuum states energies, widths, E1 and E2 transition strength distributions, Coulomb dissociation cross section. Complex scaling method.

doi: 10.1103/PhysRevC.63.054313
Citations: PlumX Metrics


2001MY05      Acta Phys.Hung.N.S. 13, 163 (2001)

T.Myo, S.Aoyama, K.Kato, K.Ikeda

Structure of Light Unstable Nuclei in Continuum Energies

NUCLEAR STRUCTURE 6He; calculated resonance energies and widths, many-body continuum states. Complex scaling method.

doi: 10.1556/APH.13.2001.1-3.20
Citations: PlumX Metrics


2000AO06      Phys.Rev. C62, 034305 (2000)

S.Aoyama

s-Wave Halo Effect and the Coulomb Barrier Top Effect on the Mirror State of a Halo

NUCLEAR STRUCTURE 11Be, 11N; calculated energy shift; deduced halo effect, Coulomb barrier top effect.

doi: 10.1103/PhysRevC.62.034305
Citations: PlumX Metrics


2000IT01      Phys.Rev. C61, 024303 (2000)

N.Itagaki, S.Aoyama

Systematic Study on He Isotopes with the Antisymmetrized Molecular Dynamics Plus Generator Coordinate Method

NUCLEAR STRUCTURE 4,5,6,7,8He; calculated binding energies. 4,6,8He; calculated radii. Antisymmetrized molecular dynamics plus generator coordinate method. Comparisons with data.

doi: 10.1103/PhysRevC.61.024303
Citations: PlumX Metrics


2000MA32      Nucl.Phys. A673, 207 (2000)

H.Masui, S.Aoyama, T.Myo, K.Kato, K.Ikeda

Study of Virtual States in 5He and 10Li with the Jost Function Method

NUCLEAR STRUCTURE 5He, 10Li; calculated virtual state features. Jost function method, core-plus-neutron picture.

doi: 10.1016/S0375-9474(00)00148-2
Citations: PlumX Metrics


1999AO01      Phys.Rev. C59, 531 (1999)

S.Aoyama

Spin-Orbit Splitting of the Resonant States in the 4He + n System

NUCLEAR STRUCTURE 5He; calculated resonant states spin-orbit splitting. Complex scaling method.

doi: 10.1103/PhysRevC.59.531
Citations: PlumX Metrics


1999MA91      Prog.Theor.Phys.(Kyoto) 102, 1119 (1999)

H.Masui, S.Aoyama, T.Myo, K.Kato

Partial Decay Widths in Coupled-Channel Systems with the Complex-Scaled Jost Function Method

doi: 10.1143/PTP.102.1119
Citations: PlumX Metrics


1998AO01      Phys.Rev. C57, 975 (1998)

S.Aoyama, N.Itagaki, K.Kato, K.Ikeda

Thomas-Ehrman Effect on s1/2 and p1/2 Resonance States in 10C + p

NUCLEAR STRUCTURE 11N; calculated resonances E, Γ; deduced mirror symmetry breaking. Core-plus-nucleon model, complex scaling method.

doi: 10.1103/PhysRevC.57.975
Citations: PlumX Metrics


1998AO02      Prog.Theor.Phys.(Kyoto) 99, 623 (1998)

S.Aoyama, K.Kato, K.Ikeda

The Mechanism of the Anomalous Energy Shift between s-States in Mirror Nuclei with a Halo Structure

NUCLEAR STRUCTURE 13C, 13N, 17O, 17F; calculated levels; deduced anomalous energy shift mechanism. Complex scaling method, core plus particle approach.

doi: 10.1143/PTP.99.623
Citations: PlumX Metrics


1998MU11      Prog.Theor.Phys.(Kyoto) 99, 381 (1998)

S.Mukai, S.Aoyama, K.Kato, K.Ikeda

A Study of the Binding Mechanism of 11Li by the 9Li + n + n Model

NUCLEAR STRUCTURE 11Li; calculated binding energy, radius, density distribution, levels; deduced core excitation role. Three-cluster model.

doi: 10.1143/PTP.99.381
Citations: PlumX Metrics


1997AO02      Phys.Rev. C55, 2379 (1997)

S.Aoyama, K.Kato, K.Ikeda

Resonances in 9He and 10He

NUCLEAR STRUCTURE 9,10He; calculated ground state energy, width. Complex scaling method.

doi: 10.1103/PhysRevC.55.2379
Citations: PlumX Metrics


1997AO05      Phys.Lett. 414B, 13 (1997)

S.Aoyama, K.Kato, K.Ikeda

Resonant Structures in the Mirror Nuclei 10N and 10Li

NUCLEAR STRUCTURE 10N, 10Li; calculated resonances E, Γ. Complex scaling method, core plus nucleon model.

doi: 10.1016/S0370-2693(97)01158-1
Citations: PlumX Metrics


1995AO05      Prog.Theor.Phys.(Kyoto) 93, 99 (1995)

S.Aoyama, S.Mukai, K.Kato, K.Ikeda

Binding Mechanism of a Neutron-Rich Nucleus 6He and Its Excited States

NUCLEAR STRUCTURE 6He; calculated binding energy, rms radii. Hybrid-TV model.

doi: 10.1143/ptp/93.1.99
Citations: PlumX Metrics


1995AO06      Prog.Theor.Phys.(Kyoto) 94, 343 (1995)

S.Aoyama, S.Mukai, K.Kato, K.Ikeda

Theoretical Predictions of Low-Lying Three-Body Resonance States in 6He

NUCLEAR STRUCTURE 6He; calculated levels, decay widths. Complex scaling method, cluster orbital shell model.

doi: 10.1143/PTP.94.343
Citations: PlumX Metrics


1995KA20      Nucl.Phys. A588, 29c (1995)

K.Kato, S.Aoyama, S.Mukai, K.Ikeda

Binding and Excitation Mechanisms of 6He, 10He and 11Li

NUCLEAR STRUCTURE 6,10He, 11Li; calculated levels, binding energy; deduced di-neutron correlations role. Core+2n three-body models, hybrid-TV model for correlations.

doi: 10.1016/0375-9474(95)00095-I
Citations: PlumX Metrics


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