NSR Query Results
Output year order : Descending NSR database version of April 24, 2024. Search: Author = S.Ohkubo Found 90 matches. 2024OH01 Phys.Rev. C 109, 034618 (2024) Farside-dominant quasinuclear rainbow in refractive α + α scattering
doi: 10.1103/PhysRevC.109.034618
2023OH01 Phys.Rev. C 107, 034317 (2023) α + 92Zr cluster structure in 96Mo NUCLEAR REACTIONS 90,91,92,94Zr(α, α), E=21-120 MeV; calcu92Zr(α, α), E=10-25 MeV; calculated phase shifts. Double folding model. Comparison to experimental data. NUCLEAR STRUCTURE 96Mo; calculated levels, J, π, B(E2), rms radii. Calculations are based on α+92Zr cluster model with the double folding potential. Discussed the effect of α clustering in 96Mo on half-life of 96Zr 0νββ-decay. Comparison to experimental data.
doi: 10.1103/PhysRevC.107.034317
2022OH02 Phys.Rev. C 106, 034324 (2022) Supersolidity of α cluster structure in 40Ca NUCLEAR STRUCTURE 40Ca; calculated levels, J, π, eigenfunction for the ground state, Bogoliubov-de Gennes (BdG) and zero-mode wave functions, condensation rate dependence of the energy levels using spatially localized Brink α-cluster model in the generator coordinate method (GCM), and field theoretical superfluid cluster model (SCM) for condensation aspects of the α-cluster structure. Comparison with available experimental data. Discussed nature of the mysterious 0+ state at the lowest excitation energy in 40Ca in terms of Nambu-Goldstone zero mode.
doi: 10.1103/PhysRevC.106.034324
2021HI14 Prog.Theor.Exp.Phys. 2021, 113D02 (2021) Existence of core excited 8Be* = α + α8 cluster structure in α + α scattering NUCLEAR STRUCTURE 8Be; analyzed available data; deduced α+α cluster structure at the highly excited energy using the coupled-channel calculations.
doi: 10.1093/ptep/ptab126
2021OH02 Phys.Rev. C 104, 054310 (2021) Evidence of a higher nodal band α + 44Ca cluster state in fusion reactions and α clustering in 48Ti NUCLEAR REACTIONS 44Ca(α, α), E=18, 24.1 MeV; calculated σ(θ, E) distribution using global optical potential, and compared with experimental data. 44Ca(α, X), E=9.5-18 MeV; calculated fusion σ(E), phase shifts and compared with experimental σ(E) data. NUCLEAR STRUCTURE 48Ti; calculated levels, J, π, bands, B(E2) with respect to the α threshold calculated with the potentials of 181 MeV and 171 MeV, and compared with experimental data; deduced evidence for α cluster structure of 48Ti. Relevance to evaluating half-life of the neutrinoless double-β decay (0νββ) of 48Ca.
doi: 10.1103/PhysRevC.104.054310
2020OH02 Phys.Rev. C 101, 041301 (2020) Existence of higher nodal band states with α + 48Ca cluster structure in 52Ti NUCLEAR REACTIONS 48Ca(α, α), E=18, 29, 40.7, 45.9, 49.5, 65.6, 100 MeV; calculated σ(E, θ) using the optical model potentials, and compared with experimental data; deduced cluster structure in 52Ti by studying the nuclear rainbows at high energies, the Airy structure of the pre-rainbows at intermediate energies. NUCLEAR STRUCTURE 52Ti; calculated levels, J, π, 3α-cluster states, intercluster rms radii, B(E2), resonance energies and widths of N=14 band states, and radial α+48Ca potential. Discussion of α+48Ca cluster structure in N=14 higher nodal band states.
doi: 10.1103/PhysRevC.101.041301
2020OH03 Prog.Theor.Exp.Phys. 2020, 041D01 (2020) S.Ohkubo, J.Takahashi, Y.Yamanaka Supersolidity of the α cluster structure in the nucleus 12C NUCLEAR STRUCTURE 12C; calculated structure parameters; deduced that the crystalline cluster picture and the nonlocalized cluster picture can be reconciled by noticing that they are a manifestation of supersolidity with properties of both crystallinity and superfluidity using a superfluid α cluster model based on effective field theory.
doi: 10.1093/ptep/ptaa043
2019PE14 Phys.Rev. C 100, 024312 (2019) P.Petkov, C.Muller-Gatermann, D.Werner, A.Dewald, A.Blazhev, C.Fransen, J.Jolie, S.Ohkubo, K.O.Zell New lifetime measurements for the lowest quadrupole states in 20, 22Ne and possible explanations of the high collectivity of the depopulating E2 transitions NUCLEAR REACTIONS 9Be, Mg(16O, X)20Ne, E=30, 33, 36, 38 MeV; 9Be, Mg(18O, X)22Ne, E=33 MeV; measured Eγ, Iγ, γγ-coin, stopping powers, level half-lives by DSAM and line-shape analysis using an array of twelve HPGe detectors, and Cologne coincidence plunger set up at the tandem accelerator of the University of Cologne. 20,22Ne; deduced levels, B(E2). Comparison with shell-model and configuration-mixing calculations, and with previous experimental data. Discussed angular momentum dependence of the B(E2) transition strengths between the yrast states.
doi: 10.1103/PhysRevC.100.024312
2018KA41 Phys.Rev. C 98, 044303 (2018) R.Katsuragi, Y.Kazama, J.Takahashi, Y.Nakamura, Y.Yamanaka, S.Ohkubo Bose-Einstein condensation of α-clusters and new soft mode in 12C-52Fe 4N nuclei in a field-theoretical superfluid cluster model NUCLEAR STRUCTURE 12C, 16O, 20Ne, 24Mg, 28Si, 32S, 36Ar, 40Ca, 44Ti, 48Cr, 52Fe; calculated levels for N=3-13 α clusters, confining potential per α-cluster, and Bogoliubov-de Gennes wave functions at various condensation rates, and B(E2) for 12C using field-theoretical superfluid cluster model. Bose-Einstein condensation (BEC) of α clusters in light and medium-heavy 4N nuclei. Comparison with available experimental values.
doi: 10.1103/PhysRevC.98.044303
2017OH02 Phys.Rev. C 95, 044002 (2017) Luneburg-lens-like structural Pauli attractive core of the nuclear force at short distances
doi: 10.1103/PhysRevC.95.044002
2017OH04 Phys.Rev. C 96, 024607 (2017) S.Ohkubo, Y.Hirabayashi, A.A.Ogloblin Existence of inelastic supernumerary nuclear rainbow in 16O + 12C scattering NUCLEAR REACTIONS 12C(16O, 16O), (16O, 16O'), (16O, 12C), E=124, 170, 180, 181, 200 MeV; analyzed σ(θ, E) data using coupled channels method with an extended double folding potential, and wavefunctions for 12C and 16O from microscopic α cluster model and a finite-range density-dependent nucleon-nucleon force; deduced positions of the Airy and A1 minima, and existence of a supernumerary bow in inelastic scattering. Comparison with pattern of meteorological rainbows.
doi: 10.1103/PhysRevC.96.024607
2016NA22 Phys.Rev. C 94, 014314 (2016), Erratum Phys.Rev. C 98, 049901 (2018) Y.Nakamura, J.Takahashi, Y.Yamanaka, S.Ohkubo Effective field theory of Bose-Einstein condensation of α clusters and Nambu-Goldstone-Higgs states in 12C NUCLEAR STRUCTURE 12C; calculated levels, J, π, B(E2) of α-cluster structure above the α-condensate Hoyle state. Discussed emergence of the Nambu-Goldstone-Higgs (NGH) states. Quantum field theory of Bose-Einstein condensation for α clusters. Comparison with available experimental data.
doi: 10.1103/PhysRevC.94.014314
2016OH02 Phys.Rev. C 93, 041303 (2016) Luneburg-lens-like universal structural Pauli attraction in nucleus-nucleus interactions: Origin of emergence of cluster structures and nuclear rainbows NUCLEAR REACTIONS 40Ca(α, α), E=61 MeV; 16O(α, α), E=49.5 MeV; 4He(α, α), E=wide range; 16O(16O, 16O), E=350 MeV; analyzed σ(θ) data. Global nuclear potential and corresponding Luneburg lens potential. Airy structure of nuclear rainbow, and cluster structures. Evidence for existence of a Luneburg-lens-like universal structural Pauli attraction in the internal region of nucleus-nucleus interaction.
doi: 10.1103/PhysRevC.93.041303
2016OH04 Phys.Rev. C 94, 034601 (2016) Evidence for a dynamically refracted primary bow in weakly bound 9Be rainbow scattering from 16O NUCLEAR REACTIONS 16O(9Be, 9Be), E=74.25, 157.7 MeV; calculated σ(θ) in a single channel, σ(θ) with coupling to the 5/2- and 7/2- states in 9Be, energy evolution of the Airy minima for E(9Be)=74.25, 90.0, 112.5, 135.0, 17.7 MeV; deduced evidence for the existence of a primary bow refracted dynamically by coupling to the excited states of a weakly bound 9Be nucleus. Coupled channel (CC) method with an extended double folding (EDF) model. Comparison with experimental data for E(9Be)=74.25 and 157.7 MeV.
doi: 10.1103/PhysRevC.94.034601
2015MA12 Phys.Rev. C 91, 024616 (2015) R.S.Mackintosh, Y.Hirabayashi, S.Ohkubo Emergence of a secondary rainbow and the dynamical polarization potential for 16O on 12C at 330 MeV NUCLEAR REACTIONS 12C(16O, 16O), E≈300 MeV; analyzed dynamic polarization potential (DPP) and secondary rainbow effect using S-matrix to potential, SL to V(r) inversion, and coupled channel calculations; deduced effect of direct coupling between the collective states of 12C and 16O. Comparison with experimental data.
doi: 10.1103/PhysRevC.91.024616
2015OH01 Phys.Rev. C 92, 024624 (2015) Airy structure in 16O + 14C nuclear rainbow scattering NUCLEAR REACTIONS 14C(16O, 16O), E=116, 132, 158, 160, 180, 200, 220, 240, 260, 281, 382.2 MeV; calculated σ(θ, E); deduced energy evolution of the Airy structure of nuclear rainbow and σ(θ) distribution, Airy minima using extended double-folding (EDF) model. Comparison with experimental data.
doi: 10.1103/PhysRevC.92.024624
2015OH02 Phys.Rev. C 92, 051601 (2015) S.Ohkubo, Y.Hirabayashi, A.A.Ogloblin Further evidence for a dynamically generated secondary bow in 13C + 12C rainbow scattering NUCLEAR REACTIONS 12C(13C, 13C'), E=200, 250, 260, 330 MeV; 12C(16O, 16O'), E=330 MeV; calculated σ(θ) distributions with coupling to first 2+ and 3- states in 12C and 16O, energy evolution of the Airy structure in σ(θ, E) distributions in 13C+12C reaction; deduced existence of a secondary bow in nuclear rainbow scattering. Coupled channels (CC) method with extended double-folding (EDF) model. Comparison with experimental data.
doi: 10.1103/PhysRevC.92.051601
2014OH01 Phys.Rev. C 89, 051601 (2014) Evidence for a secondary bow in Newton's zero-order nuclear rainbow NUCLEAR REACTIONS 16O(12C, 12C), E=200-608 MeV; analyzed experimental σ(θ) data by coupled-channel (CC) method, and by extended double folding (EDF) potential using realistic wave functions for 16O and 12C; deduced evidence for a secondary bow in Newton's zero-order nuclear rainbow scattering. Airy minimum. Discussed contribution of transfer reaction channels.
doi: 10.1103/PhysRevC.89.051601
2014OH02 Phys.Rev. C 89, 061601 (2014) Similarity between nuclear rainbow and meteorological rainbow: Evidence for nuclear ripples NUCLEAR REACTIONS 12C(16O, 16O), E=115.9 MeV; analyzed elastic σ(θ) distribution using coupled channels method with a double folding model derived from a density-dependent effective nucleon-nucleon force, and coupling to excited states of 12C and 16O; deduced evidence for nuclear ripples superimposed on the Airy structure of the nuclear rainbow; described similar mechanism in nuclear and meteorological rainbow.
doi: 10.1103/PhysRevC.89.061601
2014OH04 Phys.Rev. C 90, 064617 (2014) S.Ohkubo, Y.Hirabayashi, A.A.Ogloblin, Yu.A.Gloukhov, A.S.Dem'yanova, W.H.Trzaska Refractive effects and Airy structure in inelastic 16O + 12C rainbow scattering NUCLEAR REACTIONS 12C(16O, 16O)(16O, 16O'), E=170, 181, 200, 260, 281 MeV; measured particle spectra, σ(E, θ) Jyvaskyla University cyclotron facility; analyzed by coupled-channels method using an extended double folding (EDF) model, and taking into account g.s., first 2+ and 3- states of 12C and 16O; 12C(16O, 16O), (16O, 16O'), E=200, 330, 350, 400, 450, 500, 608 MeV; calculated σ(E, θ) distributions for elastic scattering and inelastic scattering to the first 2+ state in 12C. Comparison with available experimental data; deduced Airy minima in elastic scattering and in inelastic (rainbow) scattering to the first 2+ state of 12C.
doi: 10.1103/PhysRevC.90.064617
2013HA01 Phys.Rev. C 87, 024311 (2013) Sh.Hamada, Y.Hirabayashi, N.Burtebayev, S.Ohkubo Observation of an Airy minimum in elastic and inelastic scattering of 3He from 12C at 50.5 and 60 MeV, and α-particle condensation in 12C NUCLEAR REACTIONS 12C(3He, 3He), (3He, 3He'), E=50.5, 60 MeV;measured particle spectra, energy loss, σ(θ, E) for Hoyle state and other levels. 12C; deduced levels, angular position of Airy minimum A1. Hoyle state interpreted as three α-particle condensate with dilute density. Coupled-channel analysis with double folding model.
doi: 10.1103/PhysRevC.87.024311
2013HI06 Phys.Rev. C 88, 014314 (2013) Unification of Airy structure in inelastic α+16O scattering and α-cluster structure with core excitation in 20Ne NUCLEAR REACTIONS 16O(α, α'), E=40.5, 50, 80.7, 146 MeV; calculated σ(θ, E). 16O(α, α), E=20.75, 23.7, 24.28, 25.2, 30.3, 40.5, 48.7, 50, 54.1, 69.5, 80.7, 146 MeV; calculated σ(θ, E). Coupled channel method using a microscopic double folding model. 20Ne; calculated levels, J, π, Kπ; deduced α cluster structure. Comparison with experimental data.
doi: 10.1103/PhysRevC.88.014314
2013KL03 J.Phys.:Conf.Ser. 445, 012036 (2013) M.A.Klatt, T.Ichikawa, K.Iida, N.Itagaki, J.A.Maruhn, K.Matsuyanagi, K.Mecke, S.Ohkubo, P.-G.Reinhard, B.Schuetrumpf Exotic cluster structures in the mean-field theory NUCLEAR STRUCTURE 16O, 40Ca; calculated deformation, exotic shapes using Skyrme Hartree-Fock, TDHF.
doi: 10.1088/1742-6596/445/1/012036
2013SA16 Nucl.Phys. A908, 73 (2013) Cluster structure and deformed bands in the 38Ar nucleus NUCLEAR STRUCTURE 38Ar; calculated levels, J, π, bands, rotational bands, superdeformed band, α spectroscopic factor, γ transitions, B(E2) using OCM (orthogonality condition model). Compared to data.
doi: 10.1016/j.nuclphysa.2013.04.005
2012IC04 Phys.Rev.Lett. 109, 232503 (2012) T.Ichikawa, J.A.Maruhn, N.Itagaki, K.Matsuyanagi, P.-G.Reinhard, S.Ohkubo Existence of an Exotic Torus Configuration in High-Spin Excited States of 40Ca NUCLEAR STRUCTURE 40Ca; calculated high-spin states, J, π, neutron single-particle energies; deduced stable state with thorus configuration. Skyrme Hartree-Fock method, comparison with available data.
doi: 10.1103/PhysRevLett.109.232503
2011IC04 Phys.Rev.Lett. 107, 112501 (2011) T.Ichikawa, J.A.Maruhn, N.Itagaki, S.Ohkubo Linear Chain Structure of Four-α Clusters in 16O NUCLEAR STRUCTURE 16O; calculated surface and total nucleon density, coefficient of the rotational energy, angular momentum; deduced existence of stable exotic nuclei with large angular momentum of inertia. Skyrme cranked Hartree-Fock method.
doi: 10.1103/PhysRevLett.107.112501
2011OH01 Int.J.Mod.Phys. E20, 880 (2011) Alpha-Particle condensation in 16O NUCLEAR STRUCTURE 16O; calculated energies, J, π for K bands states; deduced α+12C(0+2) cluster structure.
doi: 10.1142/S0218301311018885
2010SU23 Phys.Rev. C 82, 041303 (2010) Enhanced E1 transitions and α+208Pb(3-) clustering in 212Po NUCLEAR STRUCTURE 212Po; calculated levels, J, π, bands, B(E1) and B(E2) transition rates using coupled-channel α+208Pb cluster model. Comparison with experimental data.
doi: 10.1103/PhysRevC.82.041303
2009FU17 Phys.Rev. C 80, 064613 (2009) M.Fukada, M.K.Takimoto, K.Ogino, S.Ohkubo α cluster states in 44, 46, 52Ti NUCLEAR REACTIONS 12C, 16O, 40,42,48Ca(7Li, tα)12C/16O/40Ca/42Ca/48Ca/44Ti/46Ti/52Ti, E=26.0 MeV; measured particle-spectra, tα-coin, and tα(θ); deduced relative ratios of reaction cross sections. 44,46,52Ti; deduced levels, J, π, α-cluster states. Comparison with other experimental data.
doi: 10.1103/PhysRevC.80.064613
2008OH03 Phys.Rev. C 77, 041303 (2008) Evidence for higher nodal band states with 3He cluster structure in 19Ne and prerainbows in 3He+16O scattering NUCLEAR REACTIONS 16O(3He, X), E=15, 25, 32, 40.9, 60 MeV; calculated σ, angular distributions, central double folding potential, phase shifts. 19Ne; systematics of 3He cluster states. Comparison with experimental data, cluster structure with 3,4He, 16O.
doi: 10.1103/PhysRevC.77.041303
2007KH02 J.Phys.(London) G34, R111 (2007) D.T.Khoa, W.von Oertzen, H.G.Bohlen, S.Ohkubo Nuclear rainbow scattering and nucleus-nucleus potential
doi: 10.1088/0954-3899/34/3/R01
2007MI46 Eur.Phys.J. Special Topics 150, 41 (2007) Unexpected transparency in the scattering of fragile 6Li and 6He Nuclei NUCLEAR REACTIONS 12,14C(6He, 2α), E=35 MeV; measured Eα, Iα, αα-coin. 14C; deduced level energies.
doi: 10.1140/epjst/e2007-00261-1
2007OH01 Phys.Rev. C 75, 044609 (2007) Evidence for strong refraction of 3He in an α-particle condensate NUCLEAR REACTIONS 12C(3He, 3He), (3He, 3He'), E=34.7, 72 MeV; analyzed σ(E, θ). 12C deduced α-particle condensate.
doi: 10.1103/PhysRevC.75.044609
2005FU03 Phys.Rev. C 71, 067602 (2005) M.Fukada, M.Ohmura, F.Harima, K.Ogino, K.Takimoto, S.Ohkubo α-cluster states in 38Ar observed via the 34S(7Li, tα)34S reaction NUCLEAR REACTIONS 34S(7Li, tα), E=26 MeV; measured particle spectra, angular correlations. 38Ar deduced α-cluster states energies, J, π.
doi: 10.1103/PhysRevC.71.067602
2005MI29 Phys.Rev. C 72, 054601 (2005) Airy minima in the scattering of weakly bound light heavy ions NUCLEAR REACTIONS 12C(6Li, 6Li), E=13-318 MeV; 12C(6Li, 6Li'), E=24, 30 MeV; 16O(6Li, 6Li), E=13-48 MeV; 12C(6He, 6He), E=18 MeV; analyzed σ(θ); deduced transparency, refractive features.
doi: 10.1103/PhysRevC.72.054601
2004MI12 Eur.Phys.J. A 19, 333 (2004) Evolution of Airy structure in 12C(12C, 12C)12C between 5 and 10 MeV/A NUCLEAR REACTIONS 12C(12C, 12C), E=70-130 MeV; calculated σ(θ), incomplete absorption features, properties of Airy minima. Global optical potential.
doi: 10.1140/epja/i2003-10133-0
2004MI33 Nucl.Phys. A738, 231 (2004) Airy structure in inelastic light heavy-ion scattering? NUCLEAR REACTIONS 40Ca(α, α), (α, α'), E=29-100 MeV; analyzed σ(θ), energy dependence of Airy minima.
doi: 10.1016/j.nuclphysa.2004.04.037
2004MI46 Phys.Rev. C 70, 044609 (2004) Airy structure in inelastic light-ion and light heavy-ion scattering NUCLEAR REACTIONS 40Ca(α, α), (α, α'), E=28-100 MeV; 16O(16O, 16O), (16O, 16O'), E=124 MeV; analyzed σ(θ), Airy structure; deduced phase rules between elastic and inelastic scattering.
doi: 10.1103/PhysRevC.70.044609
2004OH01 Phys.Lett. B 578, 304 (2004) Parity-doublet 16O + 12C cluster bands in 28Si NUCLEAR STRUCTURE 28Si; calculated molecular cluster bands energy, J, π, superdeformation. Relationship to Airy structure in scattering data discussed.
doi: 10.1016/j.physletb.2003.10.076
2004OH13 Phys.Rev. C 70, 041602 (2004) Bose-Einstein condensation of α particles and Airy structure in nuclear rainbow scattering NUCLEAR REACTIONS 12C(α, α), (α, α'), E=139-240 MeV; analyzed σ(E, θ); deduced Airy structure. 12C deduced α-particle density distribution, Bose-Einstein condensation features. Coupled-channels analysis, double-folding model.
doi: 10.1103/PhysRevC.70.041602
2004SA51 Nucl.Phys. A744, 77 (2004); Erratum Nucl.Phys. A748, 699 (2005) Superdeformation and α-cluster structure of the nucleus 36Ar NUCLEAR STRUCTURE 36Ar; calculated levels, J, π, B(E2), spectroscopic factors, superdeformed band properties, α-cluster structure. Comparison with data.
doi: 10.1016/j.nuclphysa.2004.08.016
2003OH03 Yad.Fiz. 66, 1534 (2003); Phys.Atomic Nuclei 66, 1489 (2003) Rainbow, Airy Structure, and Molecular Structure in the 16O + 16O System NUCLEAR REACTIONS 16O(16O, 16O), E(cm)=12.5-31.5 MeV; calculated σ(θ), molecular band states energies, J, π. Global deep potential.
doi: 10.1134/1.1601754
2003OH09 Nucl.Phys. A722, 414c (2003) Airy structure in rainbow scattering and nucleus-nucleus interaction NUCLEAR STRUCTURE 28Si, 32S; calculated cluster structure, molecular bands features.
doi: 10.1016/S0375-9474(03)01399-X
2003OH10 Acta Phys.Hung.N.S. 18, 287 (2003) 16O + 16O Molecular Structure and Superdeformation in 32S NUCLEAR STRUCTURE 32S; analyzed cluster structure, superdeformation.
doi: 10.1556/APH.18.2003.2-4.28
2002HI07 Yad.Fiz. 65, 715 (2002); Phys.Atomic Nuclei 65, 683 (2002) Alpha Scattering from Nonclosed Shell Nucleus 12C and Alpha-Nucleus Interaction NUCLEAR REACTIONS 12C(α, α), (α, α'), E=41-172.5 MeV; analyzed σ(θ), σ(E, θ). Microscopic α-cluster model wave functions.
doi: 10.1134/1.1471274
2002MI19 Yad.Fiz. 65, 706 (2002); Phys.Atomic Nuclei 65, 674 (2002) F.Michel, F.Brau, G.Reidemeister, S.Ohkubo Interpretation of Airy Minima in 16O + 16O and 16O + 12C Elastic Scattering in Terms of a Barrier-Wave/Internal-Wave Decomposition NUCLEAR REACTIONS 16O(16O, 16O), E=124 MeV; 12C(16O, 16O), E=132 MeV; calculated σ(θ), contribution of barrier-wave/internal-wave interference to Airy minima.
doi: 10.1134/1.1471272
2002MI39 Phys.Rev.Lett. 89, 152701 (2002) F.Michel, G.Reidemeister, S.Ohkubo Luneburg Lens Approach to Nuclear Rainbow Scattering NUCLEAR REACTIONS 12C(16O, 16O), E=132 MeV; analyzed σ(θ). 16O(16O, 16O), E=75 MeV; analyzed potential, trajectory features. Luneburg lens approach, differences between optical and nuclear mechanisms discussed.
doi: 10.1103/PhysRevLett.89.152701
2002OH03 Phys.Rev. C66, 021301 (2002) Evidence for 16O + 16O cluster bands in 32S NUCLEAR REACTIONS 16O(16O, 16O), E(cm)=12.5-31.5 MeV; calculated, analyzed σ(θ). 32S deduced cluster band features. NUCLEAR STRUCTURE 32S; calculated cluster band level energies, J, π, radii, transitions B(E2).
doi: 10.1103/PhysRevC.66.021301
2002SA21 Yad.Fiz. 65, 735 (2002); Phys.Atomic Nuclei 65, 703 (2002) Cluster Structure of 48Cr NUCLEAR STRUCTURE 48Cr; calculated α-cluster states J, π, B(E2). Comparison with data.
doi: 10.1134/1.1471277
2002SA48 Nucl.Phys. A712, 59 (2002) Cluster structure and collective behavior of the nucleus 48Cr NUCLEAR STRUCTURE 48Ca; calculated levels, J, π, spectroscopic factors, B(E2). Cluster model.
doi: 10.1016/S0375-9474(02)01182-X
2001MI06 Phys.Rev. C63, 034620 (2001) F.Michel, G.Reidemeister, S.Ohkubo Airy Structure in 16O + 16O Elastic Scattering between 5 and 10 MeV/nucleon NUCLEAR REACTIONS 16O(16O, 16O), E=75-145 MeV; 12C(16O, 16O), E=132 MeV; calculated σ(θ), barrier- and internal-wave components; deduced origin of Airy structure. Comparison with nearside/farside decomposition.
doi: 10.1103/PhysRevC.63.034620
2000MI06 Phys.Rev. C61, 041601 (2000) F.Michel, G.Reidemeister, S.Ohkubo Unexpected Transparency in Low Energy 90Zr(α, α0) Scattering and α-Cluster Structure in 94Mo NUCLEAR REACTIONS 90Zr(α, α), E=18-40 MeV; analyzed σ, σ(θ); deduced optical potential features. 94Mo deduced α-cluster structure.
doi: 10.1103/PhysRevC.61.041601
2000MI20 Phys.Rev.Lett. 85, 1823 (2000) F.Michel, F.Brau, G.Reidemeister, S.Ohkubo Barrier-Wave-Internal-Wave Interference and Airy Minima in 16O + 16O Elastic Scattering NUCLEAR REACTIONS 16O(16O, 16O), E=124 MeV; calculated σ(θ); deduced role of barrier-wave - internal-wave interference mechanism.
doi: 10.1103/PhysRevLett.85.1823
1998MI33 Prog.Theor.Phys.(Kyoto), Suppl. 132, 7 (1998) F.Michel, S.Ohkubo, G.Reidemeister Local Potential Approach to the Alpha-Nucleus Interaction and Alpha-Cluster Structure in Nuclei NUCLEAR REACTIONS 16O, 40Ca, 36Ar, 90Zr, 208Pb(α, α), E=18-146 MeV; analyzed σ(θ); deduced optical potential features. 20Ne, 44Ti, 40Ca, 94Mo, 212Po deduced α-cluster structure features.
doi: 10.1143/PTPS.132.7
1998OH03 Phys.Rev. C57, 2760 (1998) S.Ohkubo, Y.Hirabayashi, T.Sakuda α-Cluster Structure of 44Ti in Core-Excited α + 40Ca Model NUCLEAR STRUCTURE 44Ti; calculated levels, J, π, rotational bands. α-cluster model.
doi: 10.1103/PhysRevC.57.2760
1998SA04 Phys.Rev. C57, 1184 (1998) Structure of 43Sc in the α + 39K Cluster Model NUCLEAR STRUCTURE 43Sc; calculated levels, J, π, B(λ). Microscopic α plus 39K cluster model.
doi: 10.1103/PhysRevC.57.1184
1998SA69 Prog.Theor.Phys.(Kyoto), Suppl. 132, 103 (1998) Microscopic Study of Coexistence of Alpha-Cluster and Shell-Model Structure in the 40Ca-44Ti Region NUCLEAR STRUCTURE 40,41,42Ca, 42,43Sc; calculated levels, J, π, B(E2). Microscopic α-plus-core model.
doi: 10.1143/PTPS.132.103
1998YA21 Prog.Theor.Phys.(Kyoto), Suppl. 132, 73 (1998) T.Yamaya, K.Katori, M.Fujiwara, S.Kato, S.Ohkubo Alpha-Cluster Study of 40Ca and 44Ti by the (6Li, d) Reaction NUCLEAR REACTIONS 36Ar, 40Ca, 90Zr(6Li, d), E=50 MeV; 40Ca(6Li, d), E=37 MeV; measured deuteron spectra, σ(E, θ). 40Ca, 44Ti, 94Mo deduced levels, J, π, parity doublet bands, possible α-cluster states.
doi: 10.1143/PTPS.132.73
1996YA01 Phys.Rev. C53, 131 (1996) T.Yamaya, K.Ishigaki, H.Ishiyama, T.Suehiro, S.Kato, M.Fujiwara, K.Katori, M.H.Tanaka, S.Kubono, V.Guimaraes, S.Ohkubo α-Cluster States above the Threshold Energy in 44Ti NUCLEAR REACTIONS 40Ca(6Li, d), E=37 MeV; measured σ(θ), σ(Ed). 44Ti deduced levels, J, π, α spectroscopic factors.
doi: 10.1103/PhysRevC.53.131
1995OH01 Phys.Rev.Lett. 74, 2176 (1995) Alpha Clustering and Structure of 94Mo and 212Po NUCLEAR REACTIONS 90Zr(α, α), E=23.4-79.5 MeV; 208Pb(α, α), E=19-42 MeV; analyzed σ(θ). 94Mo, 212Po deduced α-cluster states evidence. Double folding model, local potential approach.
doi: 10.1103/PhysRevLett.74.2176
1995SA02 Phys.Rev. C51, 586 (1995) Structure Study of 42Ca by α + 38Ar Cluster Model: Coexistence of alpha-particle clustering and shell structure NUCLEAR STRUCTURE 42Ca; calculated levels, B(λ), charge form factors, α-spectroscopic factors. Orthogonality condition, α+38Ar cluster model.
doi: 10.1103/PhysRevC.51.586
1994MI19 Z.Phys. A349, 297 (1994) Weak Coupling in the Upper Part of the sd-Shell and α-Clustering in 38Ar NUCLEAR REACTIONS 34S(α, α), E=18 MeV; analyzed σ(θ). 38Ar deduced clustering features. Weak-coupling, α-clusters. NUCLEAR STRUCTURE 38Ar; calculated levels, B(λ), α-reduced widths. Weak-coupling, α-clusters.
doi: 10.1007/BF01288978
1994SA01 Phys.Rev. C49, 149 (1994) Structure Study of 40Ca by α + 36Ar Cluster Model NUCLEAR STRUCTURE 40Ca; calculated levels, α spectroscopic factors, B(λ). Orthogonality condition model, α+36Ar cluster.
doi: 10.1103/PhysRevC.49.149
1994SA47 Z.Phys. A349, 361 (1994) Coexistence of α-Clustering and Shell Structure in 40Ca NUCLEAR STRUCTURE 40Ca; calculated levels, α spectroscopic factors; deduced α-cluster, shell model type state coexistence. Microscopic α+36Ar cluster model.
doi: 10.1007/BF01288997
1994YA04 Nucl.Phys. A573, 154 (1994) T.Yamaya, M.Saitoh, M.Fujiwara, T.Itahashi, K.Katori, T.Suehiro, S.Kato, S.Hatori, S.Ohkubo Cluster Structure in 40Ca via the α-Transfer Reaction NUCLEAR REACTIONS 36Ar(6Li, d), E=50 MeV; measured σ(Ed), σ(θ). 40Ca deduced levels, J, π, L, spectroscopic factors. Enriched target.
doi: 10.1016/0375-9474(94)90019-1
1994YA08 Z.Phys. A349, 357 (1994) Higher Nodal α-Cluster Band in 40Ca NUCLEAR REACTIONS 36Ar(6Li, d), E=50 MeV; analyzed σ(θ). 40Ca deduced levels, K, π, band structure, α-cluster features.
doi: 10.1007/BF01288995
1994YA09 Z.Phys. A349, 363 (1994) Core-Excited α-Cluster Structure in 44Ti NUCLEAR STRUCTURE 44Ti; calculated levels, B(λ). Core-excited α-cluster model.
doi: 10.1007/BF01288998
1993YA04 Phys.Rev. C47, 2389 (1993) T.Yamaya, S.Ohkubo, S.Okabe, M.Fujiwara Spectroscopic Factors for α-Cluster Wave Functions in 44Ti Observed via the (6Li, d) Reaction NUCLEAR REACTIONS 40Ca(6Li, d), E=50 MeV; analyzed σ(θ) data. 44Ti levels deduced α-cluster states, spectroscopic factors.
doi: 10.1103/PhysRevC.47.2389
1993YA07 Phys.Lett. 306B, 1 (1993) T.Yamaya, M.Saito, M.Fujiwara, T.Itahashi, K.Katori, T.Suehiro, S.Kato, S.Hatori, S.Ohkubo Alpha-Cluster Bands in 40Ca Observed via the (6Li, d) Reaction NUCLEAR REACTIONS 36Ar(6Li, d), E=50 MeV; measured σ(θ), σ(Ed). 40Ca deduced levels, J, π, K, band structure, α-cluster features.
doi: 10.1016/0370-2693(93)91128-A
1990RE02 Phys.Rev. C41, 63 (1990) G.Reidemeister, S.Ohkubo, F.Michel Alpha-Cluster Spectroscopy in 40Ca and in the sd-Shell Closure Region NUCLEAR REACTIONS 36Ar(α, α), E=18-41 MeV; analyzed σ(E, θ); deduced optical model parameters. NUCLEAR STRUCTURE 40Ca; calculated α-cluster states, rms radii, B(λ). Discussed other s-d shell nuclei.
doi: 10.1103/PhysRevC.41.63
1990YA03 Phys.Rev. C41, 2421 (1990) T.Yamaya, S.Oh-ami, O.Satoh, M.Fujiwara, T.Itahashi, K.Katori, S.Kato, M.Tosaki, S.Hatori, S.Ohkubo Experimental Examination of the Lowest Alpha Cluster States in 44Ti NUCLEAR REACTIONS 40Ca(6Li, d), E=50 MeV; measured σ(Ed), σ(θ). 44Ti deduced level J, π, α-cluster strength.
doi: 10.1103/PhysRevC.41.2421
1990YA09 Phys.Rev. C42, 1935 (1990) T.Yamaya, S.Oh-ami, M.Fujiwara, T.Itahashi, K.Katori, M.Tosaki, S.Kato, S.Hatori, S.Ohkubo Existence of α-Cluster Structure in 44Ti via the (6Li, d) Reaction NUCLEAR REACTIONS 40Ca(6Li, d), E=50 MeV; measured σ(θ). 44Ti deduced levels, transferred angular momentum L, spectroscopic factors Sα, J, π. Enriched target. DWBA analysis.
doi: 10.1103/PhysRevC.42.1935
1989OH01 Phys.Rev. C39, 1186 (1989) Local Potential α-Cluster Model and the Wildermuth Condition NUCLEAR REACTIONS 40Ca(α, α), E not given; calculated local potential features; deduced Wildermuth condition inadegency. Alpha-cluster model.
doi: 10.1103/PhysRevC.39.1186
1988MI01 Phys.Rev. C37, 292 (1988) F.Michel, G.Reidemeister, S.Ohkubo Potential Description of the Positive- and Negative-Energy Properties of the α + 40Ca System and α-Cluster Structure of 44Ti NUCLEAR STRUCTURE 44Ti; calculated levels, B(E2), α-spectroscopic factors, rms radii, Γ. Local potential model, α+40Ca cluster structure. NUCLEAR REACTIONS 40Ca(α, α), E ≤ 50 MeV; calculated phase shifts. Local potential model, α+40Ca cluster model.
doi: 10.1103/PhysRevC.37.292
1988OH06 Phys.Rev. C38, 2377 (1988) Alpha-Cluster Model Theory of 44Ti and an Effective Two-Body Interaction NUCLEAR STRUCTURE 44Ti; calculated levels. α-cluster model. NUCLEAR REACTIONS, ICPND 40Ca(α, α), E=18-100 MeV; calculated σ(θ) vs E. 40Ca(α, X), E ≈ 5-25 MeV; calculated fusion σ(E). Folding, α-cluster models.
doi: 10.1103/PhysRevC.38.2377
1988OH07 Prog.Theor.Phys.(Kyoto) 80, 598 (1988) Inversion Doublet K=0- Band with the α + 36Ar Cluster Structure in 40Ca NUCLEAR REACTIONS 36Ar(α, α), E=22.1-29.2 MeV; analyzed σ(θ); deduced potential, cluster structure of 40Ca. NUCLEAR STRUCTURE 40Ca; calculated rotational band. Potential for 36Ar+α.
doi: 10.1143/PTP.80.598
1987MI07 Phys.Rev. C35, 1961 (1987) F.Michel, G.Reidemeister, S.Ohkubo Last Members of the K(π) = 04+ α-Cluster Rotational Band in 20Ne NUCLEAR STRUCTURE 20Ne; calculated rotational bands. α-16O cluster. NUCLEAR REACTIONS, ICPND 16O(α, γ), (α, X), E=15-40 MeV; calculated reaction, fusion σ(E).
doi: 10.1103/PhysRevC.35.1961
1987OH06 Phys.Rev. C36, 551 (1987) Backward-Angle Anomaly in α + 40Ca Scattering and Molecular Vibrational States in 44Ti NUCLEAR REACTIONS 40Ca(α, α), E=18-50 MeV; calculated σ(E, θ); deduced phase shifts. 44Ti deduced levels, J, π. α-cluster, optical model analyses.
doi: 10.1103/PhysRevC.36.551
1987OH08 Phys.Rev. C36, 966 (1987) Internal and Barrier Wave Interpretation of the Oscillations of the Fusion Excitation Function NUCLEAR REACTIONS, ICPND 40Ca(α, α), E=5-20 MeV; calculated phase shifts vs E. 40Ca(α, X), E=5-20 MeV; calculated fusion σ(E). 44Ti deduced levels, J, π. Semi-classical model.
doi: 10.1103/PhysRevC.36.966
1987OH09 Phys.Rev. C36, 1375 (1987) Origin of the Oscillations in the 12C + 12C Fusion Excitation Function in Terms of Internal and Barrier Waves NUCLEAR REACTIONS 12C(12C, X), E ≈ 8-32 MeV; calculated fusion σ(E). 24Mg deduced levels, J, π. Semi-classical method.
doi: 10.1103/PhysRevC.36.1375
1986MI20 Phys.Rev.Lett. 57, 1215 (1986) F.Michel, G.Reidemeister, S.Ohkubo Evidence for Alpha-Particle Clustering in the 44Ti Nucleus NUCLEAR STRUCTURE 44Ti; calculated levels, B(E2), intercluster rms radii; deduced α-clustering effects.
doi: 10.1103/PhysRevLett.57.1215
1986MI21 Phys.Rev. C34, 1248 (1986) F.Michel, G.Reidemeister, S.Ohkubo Molecular Interpretation of the Oscillations of the Fusion Excitation Function for the α + 40Ca System NUCLEAR STRUCTURE 44Ti; calculated bound, quasibound levels; deduced rotational bands. Cluster model. NUCLEAR REACTIONS, ICPND 40Ca(α, α), (α, X), E=10-27 MeV; calculated fusion, reaction σ(E), σ(θ); deduced optical model parameters. 44Ti deduced positive band structure. Optical model analysis.
doi: 10.1103/PhysRevC.34.1248
1985OH01 Phys.Lett. 150B, 25 (1985) The Dynamically Induced Spin-Orbit Interaction of the 19F Projectile NUCLEAR REACTIONS 28Si(19F, 19F), E=60 MeV; calculated σ(θ), P(θ); deduced spin-orbit potential dynamical component. Coupled-channels formalism.
doi: 10.1016/0370-2693(85)90130-3
1985OH04 Phys.Rev. C31, 1560 (1985) Higher Nodal States of Alpha + 15N Cluster Structure in 19F NUCLEAR REACTIONS 15N(α, α), E=22, 24, 28 MeV; analyzed σ(θ); calculated phase shifts, forward scattering amplitudes. 19F deduced α-cluster structure vibrational state.
doi: 10.1103/PhysRevC.31.1560
1983OH04 Phys.Rev. C28, 2312 (1983) Spin-Orbit Effect on Backward Angle Anomaly in Heavy Ion Scattering NUCLEAR REACTIONS 9Be(12C, 12C), E=20, 26, 39.68, 43.75 MeV; calculated σ(θ); deduced spin-orbit potential role, optical model parameters.
doi: 10.1103/PhysRevC.28.2312
1982OH05 Phys.Rev. C25, 2498 (1982) Analyzing Powers in Heavy Ion Scattering with Identical Cores NUCLEAR REACTIONS 12C(13C, 13C), E=16.25, 20.58 MeV; 18O(19F, 19F), E=30 MeV; calculated σ(θ), A(θ). 16O(15N, 15N), E=25 MeV; calculated σ(θ), A(θ). 16O(15N, 15N), E=27.5 MeV; calculated σ(θ); deduced large oscillations. Parity dependent potential model.
doi: 10.1103/PhysRevC.25.2498
1981OH07 Prog.Theor.Phys.(Kyoto) 66, 729 (1981) Parity Dependent Potential in Polarized Triton Scattering NUCLEAR REACTIONS 12C(polarized t, t), E=15, 17 MeV; analyzed σ(θ), A(θ); deduced parity dependence effects in potential.
doi: 10.1143/PTP.66.729
1980OH03 Phys.Rev. C22, 36 (1980) Backward Angle Anomaly in Inelastic Alpha Scattering from Calcium Isotopes NUCLEAR REACTIONS 40,42,44,48Ca(α, α'), E=24, 29 MeV; analyzed σ(θ). Parity dependent potential, coupled channels calculation.
doi: 10.1103/PhysRevC.22.36
1977OH01 Progr.Theor.Phys. 57, 82 (1977) Backward Angle Anomaly in Alpha + 16O Scattering and Alpha-Cluster States in 20Ne NUCLEAR REACTIONS 16O(α, α), E=20-25 MeV; calculated σ(θ); deduced backward angle anomaly. 20Ne deduced α-cluster states.
doi: 10.1143/PTP.57.82
1975KO28 Progr.Theor.Phys. 53, 1006 (1975) Y.Kondo, S.Nagata, S.Ohkubo, O.Tanimura Backward Angle Anomaly in Alpha-Nucleus Scattering and Parity-Dependent Optical Model NUCLEAR REACTIONS 40,42,44,48Ca(α, α), E=18, 22, 24, 29 MeV; calculated σ.
doi: 10.1143/PTP.53.1006
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