NSR Query Results
Output year order : Descending NSR database version of March 21, 2024. Search: Author = N.Itagaki Found 97 matches. 2023FU02 Prog.Theor.Exp.Phys. 2023, 063D02 (2023) T.Furumoto, T.Suhara, N.Itagaki Systematic study of the relationship between nuclear structure and reactions for the 10Be nucleus NUCLEAR STRUCTURE 10Be; calculated binding energies, charge and matter radii, B(Eλ). Comparison with available data. NUCLEAR REACTIONS 12C(10Be, 10Be), E=59.4 MeV/nucleon; calculated σ(θ), σ.
doi: 10.1093/ptep/ptad070
2023HO01 Phys.Rev. C 107, L021304 (2023) Imprints of α clustering in the density profiles of 12C and 16O NUCLEAR STRUCTURE 12C, 16O; calculated one-body nucleon density distributions, charge form-factors. Calculations performed using basis states of the antisymmetrized quasicluster model (AQCM), which can describe both the shell and α-cluster configurations in a single scheme. Confirmed a significant amount of α-cluster components included in the ground state wave functions in 12C and 16O. NUCLEAR REACTIONS 12C, 16O(p, p'), E=1000 MeV; calculated σ(θ). Comparison to experimental data.
doi: 10.1103/PhysRevC.107.L021304
2023IT01 Phys.Rev. C 107, 024309 (2023) Cluster-shell competition and effect of adding hyperons NUCLEAR STRUCTURE 8,9,10Be, 12,13,14C; calculated ground state-energies for 8Be, 12C and hypernuclei systems 8Be+Λ, 8Be+2Λ, 12C+Λ and 12C+2Λ, dependence of ground-state energies on α-α cluster distance. Antisymmetrized quasicluster model (AQCM). Comparison to available experimental values and calculations performed in the framework of traditional Brink model.
doi: 10.1103/PhysRevC.107.024309
2023YA22 Phys.Rev. C 108, L011304 (2023) Y.Yamaguchi, W.Horiuchi, T.Ichikawa, N.Itagaki Dineutron-dineutron correlation in 8He NUCLEAR STRUCTURE 8He; calculated potential energy surface of Jπ=0+ for the α+2n+2n configuration, energy convergence of lowest Jπ=0+ state, point-matter one body density distribution, neutron and proton one body density distributions of 8He, rms point-proton and matter radii, ground state energy, squared overlap between the ground state of 8He and 4He+2n+2n cluster configuration, quadrupole deformation parameter of 4He+2n+2n cluster configuration. Microscopic 4He+4n model, with antisymmetrized wave function and basis states constructed with different neutron configurations and superposed using the generator coordinate method (GCM). Comparison to available experimental data. NUCLEAR REACTIONS 8He(p, p), E=680 MeV; calculated proton-nucleus elastic σ(θ). C(8He, X), E=790/MeV nucleon; calculated total σ. Calculation based on Glauber model with 4He+4n wave function. Comparison with available experimental data.
doi: 10.1103/PhysRevC.108.L011304
2023YA23 Phys.Rev. C 108, 014322 (2023) Y.Yamaguchi, W.Horiuchi, N.Itagaki Evidence of bicluster structure in the ground state of 20Ne NUCLEAR REACTIONS C(20Ne, X), E=150-1000 MeV; calculated total σ(E). 20Ne(p, p), E=800 MeV; calculated proton-nucleus elastic σ(θ). 20Ne(e, e'), E not given; calculated elastic charge form factor as a function of the momentum transfer. Antisymmetrized quasicluster model (AQCM) with 4 configurations - j-j coupling, SU(3) shell model, 5α- and 16O+α- like cluster configurations. Comparison to the experimental data. NUCLEAR STRUCTURE 20Ne; calculated nucleon density distributions.
doi: 10.1103/PhysRevC.108.014322
2022CA10 Phys.Lett. B 829, 137067 (2022) M.Caamano, T.Roger, A.M.Moro, G.F.Grinyer, J.Pancin, S.Bagchi, S.Sambi, J.Gibelin, B.Fernandez-Dominguez, N.Itagaki, J.Benlliure, D.Cortina-Gil, F.Farget, B.Jacquot, D.Perez-Loureiro, B.Pietras, R.Raabe, D.Ramos, C.Rodriguez-Tajes, H.Savajols, M.Vandebrouck Experimental investigation of ground-state properties of 7H with transfer reactions NUCLEAR REACTIONS 19F, 12C(8He, 7H), E=15.4 MeV/nucleon; measured reaction products. 7H; deduced resonance parameters, mass, T1/2, σ(θ). Comparison with available data.
doi: 10.1016/j.physletb.2022.137067
2022HO15 Phys.Rev. C 106, 044330 (2022) Density profiles near the nuclear surface of 44, 52Ti: An indication of α clustering NUCLEAR STRUCTURE 44,52Ti, 40,48Ca; calculated point-proton and neutron density distributions, point-proton and point-neutron rms radii. Antisymmetrized quasi-cluster model (AQCM). Calculations utilizing 2 types of model wave functions: shell-model-like wave function constructed by taking the core-α distance small and α-cluster-model wave function based on the core plus α-cluster model. Found that the α-clustering significantly diffuses the density profiles near the nuclear surface compared to the ideal jj coupling shell-model configuration. Comparison to experimental data. NUCLEAR REACTIONS 44,52Ti, 40,48Ca(p, p')E=320, 1000 MeV; calculated elastic scattering σ(θ). 44,52Ti(C, X), E=40-1000 MeV; deduced total reaction σ(E). Comparison to experimental data.
doi: 10.1103/PhysRevC.106.044330
2022IC01 Phys.Rev. C 105, 024314 (2022) Optimization of basis functions for multiconfiguration mixing using the replica exchange Monte Carlo method and its application to 12C NUCLEAR STRUCTURE 12C; calculated levels, J, π, potential-energy surface on the β-γ plane, temperature dependence of the calculated energies forthe 0+ excited states, rms radii. Monte Carlo method to sample Slater determinants. Comparison to experimental data.
doi: 10.1103/PhysRevC.105.024314
2022IS04 Phys.Rev. C 105, 064314 (2022) C.Ishizuka, H.Takemoto, Y.Chiba, A.Ono, N.Itagaki Role of tensor interaction as salvation of cluster structure in 44Ti NUCLEAR STRUCTURE 44Ti; calculated energy curves and rms matter radius for the 0+ state as a function of the distance between 4He and 40Ca using antisymmetrized quasicluster model (AQCM) and iSMT model, with tensor interaction; discussed competition of spin-orbit and tensor effects in the medium-heavy region nuclei. Comparison with theoretical predictions of Brink Model, and with experimental data. Relevance to ongoing experimental projects to investigate knockout α clusters from medium-heavy nuclei.
doi: 10.1103/PhysRevC.105.064314
2022IT01 Phys.Rev. C 105, 024304 (2022) Persistence of cluster structure in the ground state of 11B NUCLEAR STRUCTURE 11B; calculated levels, J, π , rms radii, contribution of α+α+t cluster configuration to the ground and exited states. Antisymmetrized quasicluster model. Comparison to experimental data.
doi: 10.1103/PhysRevC.105.024304
2021FU15 Phys.Rev. C 104, 034613 (2021) T.Furumoto, T.Suhara, N.Itagaki Drastic change of inelastic scattering dependent on the development of dineutron correlations in 10Be NUCLEAR STRUCTURE 10Be; calculated binding energy, energies, B(E2), transition densities, and rms nucleon matter, point neutron and point proton radii for the ground state, and the first 2+ states using four-body (α+α+n+n) microscopic cluster model, and compared with experimental data. NUCLEAR REACTIONS 1H(10Be, p), (10Be, p')E=59.4, 200 MeV/nucleon; calculated differential σ(θ, E) using microscopic structure and reaction models, with parameters for 10Be used from structure calculations. Comparison with experimental data. Relevance to dineutron cluster structure based on its sensitivity to the inelastic cross section to the second 2+ state in 10Be.
doi: 10.1103/PhysRevC.104.034613
2021IT02 Phys.Rev. C 103, 044303 (2021) Consistent description for cluster dynamics and single-particle correlation NUCLEAR STRUCTURE 12C; calculated energies curves of 0+ states, energy convergence for the lowest 0+ state, and level spacing of 0+ and 2+ states using 18 AQCM basis states, 50 proton and 50 neutron two-particle-two-hole states, and energy convergence of the 0+ state using 120 neutron and proton two-particle two-hole basis states coupled to the 18 AQCM basis states. Antisymmetrized quasicluster model (AQCM) with single-particle correlation and α cluster, based on a general framework of generator coordinate method (GCM).
doi: 10.1103/PhysRevC.103.044303
2021TS03 Phys.Lett. B 817, 136283 (2021) M.Tsumura, T.Kawabata, Y.Takahashi, S.Adachi, H.Akimune, S.Ashikaga, T.Baba, Y.Fujikawa, H.Fujimura, H.Fujioka, T.Furuno, T.Hashimoto, T.Harada, M.Ichikawa, K.Inaba, Y.Ishii, N.Itagaki, M.Itoh, C.Iwamoto, N.Kobayashi, A.Koshikawa, S.Kubono, Y.Maeda, Y.Matsuda, S.Matsumoto, K.Miki, T.Morimoto, M.Murata, T.Nanamura, I.Ou, S.Sakaguchi, A.Sakaue, M.Sferrazza, K.N.Suzuki, T.Takeda, A.Tamii, K.Watanabe, Y.N.Watanabe, H.P.Yoshida, J.Zenihiro First experimental determination of the radiative-decay probability of the 3-1state in 12C for estimating the triple alpha reaction rate in high temperature environments NUCLEAR REACTIONS 1H(12C, p')12C, E=262 MeV; measured reaction products, Ep, Ip; deduced radiative-decay probability of the 3-1state in 12C, 3α reaction rate. Comparison with NACRE data.
doi: 10.1016/j.physletb.2021.136283
2020DE06 Prog.Theor.Exp.Phys. 2020, 023D02 (2020) A stochastic microscopic approach to the 10Be and 11Be nuclei NUCLEAR STRUCTURE 10,11Be; calculated energy spectra, J, π, proton and neutron monopole densities using microscopic multicluster model.
doi: 10.1093/ptep/ptz169
2020IT01 Phys.Rev. C 101, 034304 (2020) N.Itagaki, A.V.Afanasjev, D.Ray Possibility of 14C cluster as a building block of medium-mass nuclei NUCLEAR STRUCTURE 12,14C, 16O, 24,28Mg, 32S, 42Ar; calculated energies of 0+ states, principal quantum numbers, neutron density distribution contours, and elastic form factor of 12C, 14C, and 16O clusters, and treating 24Mg as 12C+12C, 28Mg as 14C+14C, 32S as 16O+16O, and 42Ar as 14C+14C+14C cluster structures. Antisymmetrized quasicluster model (AQCM), and cranked relativistic mean field (CRMF) calculations. Discussed role of the 14C cluster as a possible building block of cluster structures in medium-mass nuclei.
doi: 10.1103/PhysRevC.101.034304
2020IT02 Phys.Rev. C 102, 024332 (2020) N.Itagaki, T.Fukui, J.Tanaka, Y.Kikuchi 8He and 9Li cluster structures in light nuclei NUCLEAR STRUCTURE 16Be, 17B, 18,24C; calculated energy curves for 0+, 2+ and 4+ states in 16Be determined from the two-8He threshold as a function of the distance between two 8He clusters, 3/2- state of 17B from the 9Li - 8He threshold as a function of the distance between 9Li and 8He clusters, 0+ state of 18C from the two-9Li threshold as a function of the distance between two 9Li clusters, 0+, 2+, 4+, 3-, 4- and 5- states of K=0 and K=3 bands of 24C with the equilateral triangular configuration of three-8He clusters as a function of the distance between two 8He clusters. Antisymmetrized quasicluster model (AQCM) with jj-coupling shell-model wave functions.
doi: 10.1103/PhysRevC.102.024332
2019IT01 Prog.Theor.Exp.Phys. 2019, 063D02 (2019) N.Itagaki, H.Matsuno, Y.Kanada-En'yo Short-range and tensor correlations in 4He and 8Be studied with the antisymmetrized quasi-cluster model NUCLEAR STRUCTURE 4He, 8Be; calculated energies, radii, and probabilities, pair wave functions.
doi: 10.1093/ptep/ptz046
2018DE03 Phys.Rev. C 97, 014612 (2018) 9B scattering with microscopic wave functions and the continuum-discretized coupled-channel method NUCLEAR STRUCTURE 9Be; calculated energies and neutron and proton monopole densities of the 3/2- and 1/2+ states, pseudostate energies for 1/2, 3/2, and 5/2 levels using microscopic wave functions defined in α+α+n multicluster model. NUCLEAR REACTIONS 208Pb(9Be, 9Be), E=38, 44, 50, 75 MeV; 27Al(9Be, 9Be), E=12, 22, 32 MeV; calculated σ(θ) and compared with experimental data. Continuum-discretized coupled-channel (CDCC) calculations.
doi: 10.1103/PhysRevC.97.014612
2018FU10 Phys.Rev. C 97, 044602 (2018) T.Furumoto, T.Suhara, N.Itagaki Effect of channel coupling on the elastic scattering of lithium isotopes NUCLEAR STRUCTURE 6,7,8,9Li; calculated levels, J, π, rms radii of the charged proton, point proton, point neutron, and point matter for ground states, transition strengths from the ground states to the excited states. Stochastic multi-configuration mixing method based on the microscopic-cluster model (MCM). Comparison with experimental data. NUCLEAR REACTIONS 12C, 28Si(6Li, 6Li), (7Li, 7Li), (8Li, 8Li), (9Li, 9Li), E=53 MeV/nucleon; 12C, 28Si(7Li, 7Li), E=50 MeV/nucleon; 12C(9Li, 9Li), E=59.4, 60 MeV/nucleon; 12C(10Be, 10Be), E=59.4 MeV/nucleon; calculated differential σ(θ) using microscopic coupled-channel (MCC) method with complex G-matrix interaction. Comparison with experimental results.
doi: 10.1103/PhysRevC.97.044602
2018IT02 Phys.Rev. C 97, 014304 (2018) Improved version of a simplified method for including tensor effects in cluster models NUCLEAR STRUCTURE 4He; calculated energy convergence for the ground state, energies of the (0s)4 configuration, amplitude for the linear combination of basis states, expectation values of principal quantum number, one-body spin-orbit operator, and the component of (0s)4 configuration. 16O; calculated energy curve for 0+ state with a tetrahedral configuration of four-α clusters, and expectation value of the one-body spin-orbit operator, principal quantum number of harmonic oscillator, and squared overlap between the result of iSMT and tetrahedron configuration of four α clusters as a function of the α-α distance. Conventional cluster model with tensor contribution (SMT), and improved SMT (iSMT).
doi: 10.1103/PhysRevC.97.014304
2018IT03 Phys.Rev. C 97, 014307 (2018) Nontrivial origin for the large nuclear radii of dripline oxygen isotopes NUCLEAR STRUCTURE 16O, 22,24O; calculated principal quantum number, expectation values of one-body spin-orbit operator and rms radii for 22,24O, energies of 0+ states for 16O, 22,24O, size parameter dependence for the 0+ energy of 24O as function of α-α distance for the four α clusters. Cluster model.
doi: 10.1103/PhysRevC.97.014307
2018IT07 Phys.Rev. C 98, 044306 (2018) N.Itagaki, H.Matsuno, A.Tohsaki Explicit inclusion of the spin-orbit contribution in the Tohsaki-Horiuchi-Schuck-Ropke wave function NUCLEAR STRUCTURE 12C; calculated energy of the 0+ state, rms matter radius, energy curve for 0+ state, spin-orbit energy, contribution of the three-body interaction terms, and the elastic form factor versus momentum transfer of the 0+ state using Monte Carlo Tohsaki-Horiuchi-Schuck-Ropke (THSR) wave functions combined with antisymmetrized quasi-cluster model (AQCM). Comparison with experimental values.
doi: 10.1103/PhysRevC.98.044306
2018MA65 Phys.Rev. C 98, 054306 (2018) H.Matsuno, Y.Kanada-En'yo, N.Itagaki Tensor correlations in 4He and 8Be within an antisymmetrized quasicluster model NUCLEAR STRUCTURE 4He, 8Be; calculated binding energy, energies, radii, and state probabilities with different interactions, g.s. matter density distribution, rms matter radii, squared overlap, and g.s. radial pair wave functions using tensor version of the antisymmetrized quasicluster model (AQCM-T) with V2m interactions. Comparison with available experimental values.
doi: 10.1103/PhysRevC.98.054306
2018TO01 Phys.Rev. C 97, 011301 (2018) α clustering with a hollow structure: Geometrical structure of α clusters from platonic solids to fullerene shape NUCLEAR STRUCTURE 16O, 24Mg, 32S, 48Cr, 56Ni, 80Zr, 128Gd, 240120; calculated α-cluster structures based on the geometric configurations and fullerene-shaped polyhedrons with microscopic α-cluster models.
doi: 10.1103/PhysRevC.97.011301
2018TO05 Phys.Rev. C 98, 014302 (2018) Coulomb energy of α-particle aggregates distributed on Archimedean solids NUCLEAR STRUCTURE A=120-162, Z=60; A=128-173, Z=64; A=168-227, Z=84; A=240-324, Z=120; calculated Coulomb energy for one α cluster in Archimedean solids within a microscopic framework. Discussed geometric configurations.
doi: 10.1103/PhysRevC.98.014302
2017MA34 Prog.Theor.Exp.Phys. 2017, 063D01 (2017) H.Matsuno, N.Itagaki, T.Ichikawa, Y.Yoshida, Y.Kanada-Enyo Effect of 12C + α clustering on the E0 transition in 16O NUCLEAR STRUCTURE 16O; analyzed available data; deduced the mixing effect of 3α and α breaking components in the 12C cluster on the E0 transitions.
doi: 10.1093/ptep/ptx065
2016IT01 Prog.Theor.Exp.Phys. 2016, 093D01 (2016) N.Itagaki, H.Matsuno, T.Suhara General transformation of α cluster model wave function to jj-coupling shell model in various 4N nuclei NUCLEAR STRUCTURE 4He, 20Ne, 28Si, 44Ti, 100Sn; calculated density plots, energy levels, spin-orbit operators, energy curves. The antisymmetrized quasi-cluster model.
doi: 10.1093/ptep/ptw125
2016IT02 Phys.Rev. C 94, 064324 (2016) Consistent description of 12C and 16O using a finite-range three-body interaction NUCLEAR STRUCTURE 16O; calculated 0+ energy and matter point rms radius with a tetrahedron configuration of four α's as a function of distance between α clusters. 12C; calculated 0+ and 2+ levels with and without spin-orbit interaction, B(E2), 3- and 1- states with three-α cluster structure. 6He; calculated energy convergence of ground 0+ state with α+n+n model. 8Be; calculated 0+ energy curves with the α+α model. Microscopic α cluster models. Comparison with available experimental data.
doi: 10.1103/PhysRevC.94.064324
2015IW01 Phys.Rev. C 92, 011303 (2015) Y.Iwata, T.Ichikawa, N.Itagaki, J.A.Maruhn, T.Otsuka Examination of the stability of a rod-shaped structure in 24Mg NUCLEAR STRUCTURE 24Mg; calculated density profiles of the initial states of six-α clusters, contours of final states of compact shape, rod shape, and fragmentation, comparison of energies with and without the spin-orbit interaction as a function of rotational frequency; deduced rod-shaped structure of 24Mg with large angular momentum as a metastable stationary state. Cranked Hartree-Fock calculation with several different Skyrme-type interactions.
doi: 10.1103/PhysRevC.92.011303
2015ZH19 Phys.Rev.Lett. 115, 022501 (2015) Rod-shaped Nuclei at Extreme Spin and Isospin NUCLEAR STRUCTURE 12,15,20C; calculated proton and neutron single-particle energies, J, π. Comparison with available data.
doi: 10.1103/PhysRevLett.115.022501
2014IC01 Phys.Rev. C 89, 011305 (2014) T.Ichikawa, K.Matsuyanagi, J.A.Maruhn, N.Itagaki Pure collective precession motion of a high-spin torus isomer NUCLEAR STRUCTURE 40Ca; calculated time-evolution of the density distribution, total angular momentum, tilting angle, and rotational angle of precession motion of the high-K torus isomer. Three-dimensional time-dependent Hartree-Fock (TDHF) method, and random-phase approximation (RPA) method for high-spin states.
doi: 10.1103/PhysRevC.89.011305
2014IC02 Phys.Rev. C 90, 034314 (2014) T.Ichikawa, K.Matsuyanagi, J.A.Maruhn, N.Itagaki High-spin torus isomers and their precession motions NUCLEAR STRUCTURE 36Ar, 40Ca, 44Ti, 48Cr, 52Fe; calculated density distributions, moments of inertia, single-particle energies, time evolution of the precession motion, Nilsson diagrams for high-spin torus isomers. Cranked three-dimensional Hartree-Fock (TDHF) method with Skyrme interactions and radially displaced harmonic-oscillator (RDHO) model.
doi: 10.1103/PhysRevC.90.034314
2014YA29 Phys.Rev. C 90, 054307 (2014) Searching for a 4α linear-chain structure in excited states of 16O with covariant density functional theory NUCLEAR STRUCTURE 16O; calculated low- and high-spin levels, J, π, mean-field energy surface contour in (β-γ) plane, rms charge radius, spectroscopic quadrupole moment, B(E2), density distributions, spin-orbit energies. Covariant density functional theory and relativistic mean-field (RMF) cranking calculations for 4α linear chain structure. Comparison with experimental spectra.
doi: 10.1103/PhysRevC.90.054307
2013FU07 Phys.Rev. C 87, 064320 (2013); Erratum Phys.Rev. C 90, 039902 (2014) T.Furumoto, T.Suhara, N.Itagaki Investigation of the 3/22- state of 9Li with microscopic structure and reaction models NUCLEAR STRUCTURE 9Li; calculated total energies of 1/2-, 3/2-, 5/2- and 7/2- states, low-lying negative-parity levels, J, proton, neutron, and matter radii of ground state, quadrupole moments of ground state and first 3/2-, B(E2) and B(E0) transition strengths between low-lying negative-parity states. Unified framework of microscopic α+t+n+n cluster structure and reaction models. Possibility of triaxial deformation and mixing of dineutron components in 9Li nucleus. Comparison with experimental data. NUCLEAR REACTIONS 12C(9Li, 9Li), (9Li, 9Li'), E=50, 60 MeV/nucleon; calculated quasielastic, elastic and inelastic σ(θ) for ground state and 3/2- states using wave functions from multiconfiguration mixing method, and reaction analysis by microscopic coupled channel (MCC) method. Multistep effects. Comparison with experimental data.
doi: 10.1103/PhysRevC.87.064320
2013IW01 Phys.Rev. C 87, 014609 (2013) Synthesis of thin, long heavy nuclei in ternary collisions
doi: 10.1103/PhysRevC.87.014609
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
2013SU11 Phys.Rev. C 87, 054334 (2013) T.Suhara, N.Itagaki, J.Cseh, M.Ploszajczak Novel and simple description for a smooth transition from α-cluster wave functions to jj-coupling shell model wave functions NUCLEAR STRUCTURE 12C; calculated energy surfaces of ground state, single-particle energies, convergence of total energy for ground state and first excited 0+ state. Transition from α-cluster wave function to the jj-coupling shell model. Antisymmetrized quasicluster model (AQCM). Comparison with results from antisymmetrized molecular dynamics (AMD).
doi: 10.1103/PhysRevC.87.054334
2012IC02 Phys.Rev. C 86, 031303 (2012) T.Ichikawa, N.Itagaki, Y.Kanada-En'yo, Tz.Kokalova, W.von Oertzen Search for three-α states around an 16O core in 28Si NUCLEAR STRUCTURE 28Si; calculated 16O+α states including 24Mg+α, 16O12C basis wave functions, isoscalar monopole transition strengths, root-mean-square radii, density contours using Brink's α cluster model and the multiconfiguration mixing method. Hoyle-like 3α states.
doi: 10.1103/PhysRevC.86.031303
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
2012IT01 Phys.Rev. C 85, 014302 (2012) Cluster correlations for low-lying intruder states of 12Be NUCLEAR STRUCTURE 12Be; calculated lowest two molecular orbit configurations, energy surfaces for 0+ states, yrast and first excited rotational bands. Generalized two-center cluster model.
doi: 10.1103/PhysRevC.85.014302
2012IT03 Prog.Theor.Phys.(Kyoto), Suppl. 196, 192 (2012) N.Itagaki, K.Muta, H.Masui, M.Ploszajczak, J.Cseh Simplified Modeling of Cluster-Shell Competition and Appearance of Various Cluster Structures in Light Nuclei NUCLEAR STRUCTURE 20Ne; calculated energy levels, J, π, yrast states. Antisymmetrized Quasi-Cluster approach.
doi: 10.1143/PTPS.196.192
2011CS01 Int.J.Mod.Phys. E20, 807 (2011) J.Cseh, N.Itagaki, M.Ploszajczak, H.Yepez-Martinez, L.Parra-Rodrigez, P.O.Hess Phases of cluster states
doi: 10.1142/S0218301311018721
2011IC03 Phys.Rev. C 83, 061301 (2011) T.Ichikawa, N.Itagaki, T.Kawabata, Tz.Kokalova, W.von Oertzen Gas-like state of α clusters around a 16O core in 24Mg NUCLEAR STRUCTURE 24Mg; calculated energies and energy convergence of 0+ states with basis states for 16O+α+α configurations, strength distribution of the isoscalar E0 transitions from the ground state, α-cluster states around 16O. Microscopic α-cluster model, and overlap with Tohsaki-Horiuchi-Schuck-Ropke (THSR) wave functions.
doi: 10.1103/PhysRevC.83.061301
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
2011IT01 Phys.Rev. C 83, 014302 (2011) N.Itagaki, J.Cseh, M.Poszajczak Simplified modeling of cluster-shell competition in 20Ne and 24Mg NUCLEAR STRUCTURE 20Ne, 24Mg; calculated yrast levels, and 0+ states as a function of spin-orbit interaction. Generator coordinate method (GCM) on a collective basis of antisymmetrized quasicluster states. Transition from cluster states 16O+α and 16+α+α to shell-model states 16O+4N and 16O+8N. Discussed group theoretical picture of the cluster-shell configuration transition. U(3) limit in the algebraic cluster model and shell model.
doi: 10.1103/PhysRevC.83.014302
2011IT05 Int.J.Mod.Phys. E20, 1012 (2011) N.Itagaki, Tz.Kokalova, W.von Oertzen, J.A.Maruhn Three-α cluster state around 40Ca core NUCLEAR STRUCTURE 40Ca; calculated energy convergence of three α clusters around 40Ca. THSR wave function, time-dependent HF theory.
doi: 10.1142/S0218301311019167
2011MU16 Phys.Rev. C 84, 034305 (2011) K.Muta, T.Furumoto, T.Ichikawa, N.Itagaki Three-triton states in 9Li NUCLEAR STRUCTURE 9Li; calculated rms radii and energy convergence of 3/2- 3/2+, 1/2- and 1/2+ states, E0 transition strength; deduced α+t+n+n, t+t+t configurations in excited states of 9Li.
doi: 10.1103/PhysRevC.84.034305
2011YO03 Phys.Rev. C 83, 024301 (2011) Symplectic structure and monopole strength in 12C NUCLEAR STRUCTURE 12C; calculated levels, J, π, rms radius, E0 transition strengths, energy convergence of 0+ states of 3α system. 3α cluster model and SU(3) representation. Comparison with experimental data.
doi: 10.1103/PhysRevC.83.024301
2010IT01 Phys.Rev. C 82, 014312 (2010) N.Itagaki, Tz.Kokalova, W.von Oertzen Three-α state around 40Ca NUCLEAR STRUCTURE 40Ca; calculated potential energy, coulomb energy, density distribution, basis states using microscopic α-cluster model for three-α states.
doi: 10.1103/PhysRevC.82.014312
2010IW01 Phys.Rev.Lett. 104, 252501 (2010) Y.Iwata, T.Otsuka, J.A.Maruhn, N.Itagaki Suppression of Charge Equilibration Leading to the Synthesis of Exotic Nuclei NUCLEAR REACTIONS 208Pb(238U, X), (132Xe, X), (132Sn, X), (40Ca, X), (24Mg, X), (24O, X), (16O, X), (α, X), 24Mg(24O, X), E=2, 3, 4, 4.5, 5, 6, 7, 8 MeV/nucleon; calculated mass and N/Z yields, time evolution of charge distribution, charge equilibration. Skyrme time-dependent Hartee-Fock (TDHF) theory.
doi: 10.1103/PhysRevLett.104.252501
2010IW02 Nucl.Phys. A836, 108 (2010) Y.Iwata, T.Otsuka, J.A.Maruhn, N.Itagaki Geometric classification of nucleon transfer at moderate low-energies
doi: 10.1016/j.nuclphysa.2010.01.242
2010MA24 Nucl.Phys. A833, 1 (2010) J.A.Maruhn, N.Loebl, N.Itagaki, M.Kimura Linear-chain structure of three α-clusters in 16C and 20C NUCLEAR STRUCTURE 16,20C; calculated ground-state binding energies, β2, configurations, related features for chain-like α clusters using Skyrme mean-field model.
doi: 10.1016/j.nuclphysa.2009.12.005
2010UM01 Phys.Rev.Lett. 104, 212503 (2010) A.S.Umar, J.A.Maruhn, N.Itagaki, V.E.Oberacker Microscopic Study of the Triple-α Reaction NUCLEAR REACTIONS 8Be(α, X)12C, E(cm)=2 MeV; calculated time evolution, potential energy curves for 4He + 8Be head-n collision, single-particle parities of the neutron states; deduced formation of a metastable linear chain state of three α-like clusters. Time-dependent Hartree-Fock theory.
doi: 10.1103/PhysRevLett.104.212503
2009AO03 Phys.Rev. C 80, 021304 (2009) 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
2009IT01 Phys.Rev. C 79, 034312 (2009) Cluster structure stabilized by s2 neutrons in light neutron-rich nuclei NUCLEAR STRUCTURE 18O, 22Ne; calculated energies of 0+ states. Investigated s2 configuration of two neutrons in middle of nucleus as a characteristic bond of α clusters. Microscopic Nα+2n cluster model calculations.
doi: 10.1103/PhysRevC.79.034312
2009IW06 Eur.Phys.J. A 42, 613 (2009); Erratum Eur.Phys.J. A 42, 625 (2009) Y.Iwata, T.Otsuka, J.A.Maruhn, N.Itagaki Synthesis of exotic nuclei in heavy-ion collisions at higher energies NUCLEAR REACTIONS 208Pb(α, X), (16O, X), (24O, X), (24Mg, X), (40Ca, X), (132Sn, X), (132Xe, X), (238U, X), E(cm)=5, 8 MeV/nucleon; calculated Q-values, N/Z yields, time evolution of dipole moment, reaction mechanism features, charge equilibration. Three-dimensional time-dependent Hartee-Fock method.
doi: 10.1140/epja/i2009-10851-1
2009YO03 Phys.Rev. C 79, 034308 (2009) T.Yoshida, N.Itagaki, T.Otsuka Appearance of cluster states in 13C NUCLEAR STRUCTURE 13C; calculated level energies, density distributions, proton rms radii, matter rms radii, E0 transition probabilities between 1/2- states using microscopic cluster model. Comparison with experimental data.
doi: 10.1103/PhysRevC.79.034308
2008IT01 Phys.Rev. C 77, 037301 (2008) N.Itagaki, Tz.Kokalova, M.Ito, M.Kimura, W.von Oertzen Coupling between α-condensed states and normal cluster states NUCLEAR STRUCTURE 16O, 20Ne; calculated α-condensed states, energy convergence, wave functions using microscopic α-cluster model.
doi: 10.1103/PhysRevC.77.037301
2008IT03 Phys.Rev.Lett. 100, 182502 (2008) M.Ito, N.Itagaki, H.Sakurai, K.Ikeda Coexistence of Covalent Superdeformation and Molecular Resonances in an Unbound Region of 12Be
doi: 10.1103/PhysRevLett.100.182502
2008IT04 Phys.Rev. C 77, 067301 (2008) N.Itagaki, M.Ito, M.Milin, T.Hashimoto, H.Ishiyama, H.Miyatake Coexistence of α + α + n + n and α + t + t cluster structures in 10Be NUCLEAR STRUCTURE 10Be; calculated levels, J, π.
doi: 10.1103/PhysRevC.77.067301
2008IT05 Phys.Rev. C 78, 011602 (2008) Covalent isomeric state in 12Be induced by two-neutron transfers NUCLEAR REACTIONS 4He(8He, 6He), E(cm)<18 MeV; calculated excitation functions, σ. 12Be; calculated resonance peaks, widths. Generalized two-center cluster model.
doi: 10.1103/PhysRevC.78.011602
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
2008IT07 Int.J.Mod.Phys. E17, 2061 (2008) Unified studies of nuclear reactions and exotic structures in 12Be NUCLEAR REACTIONS 4He(8He, X)12Be, E not given; calculated decay scheme for the resonance, covalent superdeformation. Generalized two-cluster model.
doi: 10.1142/S0218301308011094
2008IW06 Int.J.Mod.Phys. E17, 1660 (2008) Y.Iwata, N.Itagaki, J.A.Maruhn, T.Otsuka The competitive reaction mechanism in exotic nuclear reactions
doi: 10.1142/S0218301308010672
2007AO03 Nucl.Phys. A790, 307c (2007) 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
2007IT02 Phys.Rev. C 75, 037303 (2007) N.Itagaki, M.Kimura, C.Kurokawa, M.Ito, W.von Oertzen α-condensed state with a core nucleus NUCLEAR STRUCTURE 8,10Be, 12C, 16O, 24Mg, 28Si; calculated α-cluster states energies.
doi: 10.1103/PhysRevC.75.037303
2007MA38 Phys.Rev. C 75, 054309 (2007) Simplified modeling of cluster-shell competition in carbon isotopes NUCLEAR STRUCTURE 12,14,16C; calculated level energies and B(E2) by combining a simplied modeling of spin-orbit interaction and AMD triple-S.
doi: 10.1103/PhysRevC.75.054309
2006AO01 Phys.Rev. C 74, 017307 (2006) 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
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
2006IT06 Phys.Rev.C 74, 067304 (2006) N.Itagaki, W.von Oertzen, S.Okabe Linear-chain structure of three alpha clusters in 13C NUCLEAR STRUCTURE 13C; calculated rotational band level energies, linear-chain structure, hyperdeformation. Comparison with data.
doi: 10.1103/PhysRevC.74.067304
2006KO16 Phys.Rev.Lett. 96, 192502 (2006) Tz.Kokalova, N.Itagaki, W.von Oertzen, C.Wheldon Signatures for Multi-α-Condensed States NUCLEAR STRUCTURE 52Fe; calculated folded potential for α-cluster and sequential α emission from excited nucleus. NUCLEAR REACTIONS 24Mg(28Si, X), E=130 MeV; calculated folded potential for α-cluster and sequential α emission from excited compound nucleus.
doi: 10.1103/PhysRevLett.96.192502
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
2004AO05 Nucl.Phys. A738, 362 (2004) 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
2004IT04 Phys.Rev.Lett. 92, 142501 (2004) N.Itagaki, T.Otsuka, K.Ikeda, S.Okabe Equilateral-Triangular Shape in 14C NUCLEAR STRUCTURE 14C; calculated levels, deformation, molecular states features; deduced equilateral-triangular shape, rotational bands. Microscopic five-body model.
doi: 10.1103/PhysRevLett.92.142501
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
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
2004TH05 Czech.J.Phys. 54, 329 (2004) G.Thiamova, N.Itagaki, T.Otsuka Study of the structure of light nuclei by AMD + GCM method NUCLEAR STRUCTURE 10Be, 15C; calculated levels, J, π, cluster structure and halo features. 16,18,20,22,24,26O; calculated binding energies, excited states energies. Antisymmetrized molecular dynamics, generator coordinate method.
doi: 10.1023/B:CJOP.0000018129.75918.e8
2004TH07 Czech.J.Phys. 54, 739 (2004) G.Thiamova, N.Itagaki, T.Otsuka Structure of even-even beryllium isotopes studied by AMD+GCM method NUCLEAR STRUCTURE 6,8,10,12Be; calculated ground and excited states energies, quadrupole moments, B(E2). Antisymmetrized molecular dynamics, generator coordinate method, comparison with data.
doi: 10.1023/B:CJOP.0000038527.84719.ee
2004TH11 Eur.Phys.J. A 22, 461 (2004) G.Thiamova, N.Itagaki, T.Otsuka, K.Ikeda Systematic study of structure of carbon isotopes with the antisymmetrized molecular dynamics plus generator coordinate method NUCLEAR STRUCTURE 12,14,16,18,20,22C; calculated binding energies, radii, excited states energies, B(E2), quadrupole moments. 13,15,17,19,21C; calculated binding energies, radii, levels J, π. Antisymmetrized molecular dynamics, comparisons with data.
doi: 10.1140/epja/i2004-10053-5
2003IT06 Nucl.Phys. A719, 205c (2003) N.Itagaki, K.Hagino, T.Otsuka, S.Okabe, K.Ikeda Importance of clustering in light neutron-rich nuclei NUCLEAR REACTIONS 9Be(γ, X), E ≈ 0.5-4.5 MeV; calculated photodisintegration σ. Molecular orbital model, comparison with data. NUCLEAR STRUCTURE 12C; calculated transitions B(E2). Cluster model.
doi: 10.1016/S0375-9474(03)00918-7
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
2003IT12 Acta Phys.Hung.N.S. 18, 173 (2003) N.Itagaki, T.Otsuka, S.Okabe, K.Ikeda Exotic Cluster Structure in Light Neutron-Rich Nuclei NUCLEAR STRUCTURE 14C; calculated levels, J, π, cluster configurations. Molecular orbit model.
doi: 10.1556/APH.18.2003.2-4.9
2003SH06 Phys.Lett. B 560, 31 (2003) S.Shimoura, A.Saito, T.Minemura, Y.U.Matsuyama, H.Baba, H.Akiyoshi, N.Aoi, T.Gomi, Y.Higurashi, K.Ieki, N.Imai, N.Iwasa, H.Iwasaki, S.Kanno, S.Kubono, M.Kunibu, S.Michimasa, T.Motobayashi, T.Nakamura, H.Sakurai, M.Serata, E.Takeshita, S.Takeuchi, T.Teranishi, K.Ue, K.Yamada, Y.Yanagisawa, M.Ishihara, N.Itagaki Isomeric 0+ state in 12Be NUCLEAR REACTIONS 9Be(18O, X)12Be, E=100 MeV/nucleon; measured delayed Eγ, Iγ, γγ-coin. 12Be deduced isomeric state energy, J, π, approximate T1/2, decay branching.
doi: 10.1016/S0370-2693(03)00341-1
2003TH06 Nucl.Phys. A719, 312c (2003) G.Thiamova, N.Itagaki, T.Otsuka, K.Ikeda Systematic analysis of neutron-rich carbon isotopes NUCLEAR STRUCTURE 12,14,16,18,20,22C; calculated ground and excited states energies, radii. 13,15,17,19,21C; calculated binding energies, ground state J, π. Comparisons with data.
doi: 10.1016/S0375-9474(03)00939-4
2002HI23 Prog.Theor.Phys.(Kyoto), Suppl. 146, 565 (2002) S.Hirose, N.Itagaki, T.Otsuka, S.Okabe, K.Ikeda The Exotic Clustering and Nucleon-Nucleon Correlations in Light Neutron-Rich Nuclei NUCLEAR STRUCTURE 10Be; calculated levels, J, π, B(E2). Cluster model.
doi: 10.1143/PTPS.146.565
2002IT02 Eur.Phys.J. A 13, 43 (2002) N.Itagaki, S.Okabe, K.Ikeda, I.Tanihata Molecular-Orbital Structure in Neutron-Rich Be and C Isotopes NUCLEAR STRUCTURE 10,12Be, 12,14,16C; analyzed cluster configurations. Molecular-orbit model.
doi: 10.1140/epja1339-07
2002IT03 Phys.Rev. C65, 044302 (2002) N.Itagaki, S.Hirose, T.Otsuka, S.Okabe, K.Ikeda Triaxial Deformation in 10Be NUCLEAR STRUCTURE 10Be; calculated rotational bands features, triaxial deformation, transitions B(E2). Molecular-orbit model.
doi: 10.1103/PhysRevC.65.044302
2002IT07 Phys.Rev. C 66, 057301 (2002) Low-energy photodisintegration of 9Be with the molecular orbit mode NUCLEAR REACTIONS 9Be(γ, n), E ≈ 1-5 MeV; calculated photodisintegration σ. Molecular orbit model, three-cluster configuration, comparison with data.
doi: 10.1103/PhysRevC.66.057301
2002IT08 Prog.Theor.Phys.(Kyoto), Suppl. 146, 207 (2002) N.Itagaki, K.Ikeda, S.Okabe, T.Otsuka Exotic Cluster Shapes in Neutron-Rich Be and C Isotopes NUCLEAR STRUCTURE 12,14,16C; calculated level energies, cluster configurations.
doi: 10.1143/PTPS.146.207
2001IT03 Phys.Rev. C64, 014301 (2001) N.Itagaki, S.Okabe, K.Ikeda, I.Tanihata Molecular-Orbital Structure in Neutron-Rich C Isotopes NUCLEAR STRUCTURE 12,14,16C; calculated molecular configurations. Three-α-plus-neutrons approach.
doi: 10.1103/PhysRevC.64.014301
2001IT04 Acta Phys.Hung.N.S. 13, 153 (2001) Molecular-Orbital Structure in Be Isotopes NUCLEAR STRUCTURE 14Be, 12,14,16C; calculated cluster-structure related features.
doi: 10.1556/APH.13.2001.1-3.18
2001IT08 Prog.Theor.Phys.(Kyoto), Suppl. 142, 297 (2001) Molecular-Orbital Structure in Light Neutron-Rich Nuclei NUCLEAR STRUCTURE 10,12Be, 14,16C; calculated level energies, configurations. Molecular orbit model.
doi: 10.1143/PTPS.142.297
2000IT01 Phys.Rev. C61, 024303 (2000) 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
2000IT02 Phys.Rev. C61, 044306 (2000) Molecular Orbital Structures in 10Be NUCLEAR STRUCTURE 10Be; calculated levels, J, π. Molecular orbit model.
doi: 10.1103/PhysRevC.61.044306
2000IT06 Phys.Rev. C62, 034301 (2000) Important Role of the Spin-Orbit Interaction in Forming the 1/2+ Orbital Structure in Be Isotopes NUCLEAR STRUCTURE 10,12Be; calculated levels, J, π, configurations; deduced spin mixing effects. Molecular orbit model.
doi: 10.1103/PhysRevC.62.034301
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
1995IT06 Prog.Theor.Phys.(Kyoto) 94, 1019 (1995) Microscopic α-Cluster Model for 12C and 16O Based on Antisymmetrized Molecular Dynamics - Consistent Understanding of the Binding Energies of 12C and 16O - NUCLEAR STRUCTURE 12C, 16O; calculated levels. Antisymmetrized molecular dynamics, microscopic α-cluster model.
doi: 10.1143/PTP.94.1019
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