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NSR database version of April 11, 2024.

Search: Author = Y.R.Shimizu

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2019SA61      J.Phys.(London) G46, 055102 (2019); Corrigendum J.Phys.(London) G46, 109501 (2019)

A.Saha, T.Bhattacharjee, D.Curien, J.Dudek, I.Dedes, K.Mazurek, A.Gozdz, S.Tagami, Y.R.Shimizu, S.R.Banerjee, S.Rajbanshi, A.Bisoi, G.de Angelis, S.Bhattacharya, S.Bhattacharyya, S.Biswas, A.Chakraborty, S.Das Gupta, B.Dey, A.Goswami, D.Mondal, D.Pandit, R.Palit, T.Roy, R.P.Singh, M.S.Sarkar, S.Saha, J.Sethi

Spectroscopy of a tetrahedral doubly magic candidate nucleus 16070Yb90

NUCLEAR REACTIONS 148Sm(16O, 4n)160Yb, E=90 MeV; measured reaction products, Eγ, Iγ, γγ-coin, γγ(θ)(DCO), γγ(θ)(ADO) and γγ(linearpol) using INGA array of 20 Compton-suppressed HPGe clover detectors at TIFR pelletron facility. 160Yb; deduced high-spin levels, J, π, multipolarities, rotational bands, alignments, tetrahedral deformation. Systematics of g.s. and negative-parity bands in 152,154,156Gd.

doi: 10.1088/1361-6471/ab0573
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2018DU02      Phys.Rev. C 97, 021302 (2018)

J.Dudek, D.Curien, I.Dedes, K.Mazurek, S.Tagami, Y.R.Shimizu, T.Bhattacharjee

Spectroscopic criteria for identification of nuclear tetrahedral and octahedral symmetries: Illustration on a rare earth nucleus

NUCLEAR STRUCTURE 152Sm; calculated realistic mean-field total nuclear energy; analyzed energy levels. Comparison with group theory predictions, nuclear point-group symmetries, nuclear tetrahedral and octahedral symmetries. Spectral analysis based on irreducible representations; deduced criteria for identification of tetrahedral and octahedral symmetries. Realistic nuclear mean-field theory calculations with the phenomenological macroscopic-microscopic method, the Gogny-Hartree-Fock-Bogoliubov approach.

doi: 10.1103/PhysRevC.97.021302
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2018SH03      Phys.Rev. C 97, 024318 (2018)

M.Shimada, Y.Fujioka, S.Tagami, Y.R.Shimizu

Rotational motion of triaxially deformed nuclei studied by the microscopic angular-momentum-projection method. I. Nuclear wobbling motion

NUCLEAR STRUCTURE 162Yb; calculated levels, J, π, moment of inertia plots for the yrast and the first excited bands. 163Lu; calculated wobbling spectra, levels, J, π, triaxial superdeformed (TSD) bands, multiple wobbling rotational bands, B(E2), B(M1) and B(E2) ratios for transitions in TSD bands for different triaxial deformations, expectation values of the angular-momentum vectors, neutron and proton average pairing gaps, nuclear radius and various deformation parameters as functions of rotational frequency. Microscopic framework of angular-momentum projection from cranked triaxially deformed mean-field states, mainly using Woods-Saxon potential and the schematic separable interaction, and some results with the Gogny D1S interaction for description of wobbling motion. Comparison with experimental data.

doi: 10.1103/PhysRevC.97.024318
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2018SH04      Phys.Rev. C 97, 024319 (2018)

M.Shimada, Y.Fujioka, S.Tagami, Y.R.Shimizu

Rotational motion of triaxially deformed nuclei studied by the microscopic angular-momentum-projection method. II. Chiral doublet band

NUCLEAR STRUCTURE 128Cs, 104Rh; calculated levels, J, π, B(E2), chiral doublet bands, B(M1), B(M1)/B(E2) and B(M1) ratios for transitions in yrast and yrare bands, expectation values of the angular-momentum vectors; discussed chiral rotation in triaxially deformed nuclei. Microscopic framework of angular-momentum projection from cranked triaxially deformed mean-field states, using Woods-Saxon potential and the schematic separable interaction. Comparison with experimental data.

doi: 10.1103/PhysRevC.97.024319
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2018TA22      Phys.Rev. C 98, 024304 (2018)

S.Tagami, Y.R.Shimizu, J.Dudek

First-order Coriolis-coupling for the rotational spectrum of a tetrahedrally deformed core plus one-particle system

NUCLEAR STRUCTURE 81Zr; calculated levels, J, π for K=1/2 rotational structure properties of the tetrahedrally symmetric even-even core configurations coupled with a single valence nucleon. Angular-momentum and parity projection method, and the Coriolis-coupling model.

doi: 10.1103/PhysRevC.98.024304
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2016NA48      Phys.Scr. 91, 073008 (2016)

T.Nakatsukasa, K.Matsuyanagi, M.Matsuzaki, Y.R.Shimizu

Quantal rotation and its coupling to intrinsic motion in nuclei

doi: 10.1088/0031-8949/91/7/073008
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2016SH11      Phys.Rev. C 93, 044317 (2016)

M.Shimada, S.Tagami, Y.R.Shimizu

Realistic description of rotational bands in rare earth nuclei by the angular-momentum-projected multicranked configuration-mixing method

NUCLEAR STRUCTURE 156,158,160Gd, 158,162,164Dy, 160,162,164Er, 164,168,170Yb; calculated nuclear radii, deformation parameters β2 and β4, average pairing gaps for neutrons and protons for ground states in rare earth nuclei, levels, J, π, moment of inertia for ground-state rotational bands, detailed study of characteristics of the s-band in 164Er. Angular-momentum-projected multicranked configuration-mixing method with Gogny D1S force as effective interaction. Comparison with experimental data.

doi: 10.1103/PhysRevC.93.044317
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2016SH21      Phys.Rev. C 93, 064314 (2016)

M.Shimada, S.Watanabe, S.Tagami, T.Matsumoto, Y.R.Shimizu, M.Yahiro

Simultaneous analysis of matter radii, transition probabilities, and excitation energies of Mg isotopes by angular-momentum-projected configuration-mixing calculations

NUCLEAR STRUCTURE 24,26,28,30,32,34,36,38,40Mg; calculated potential-energy curves, level energies, rms matter radii, B(E2), β2, and probability distributions for the first 2+ and 4+ states. Beyond-mean-field (BMF) calculations with angular-momentum-projected configuration mixing with respect to the axially symmetric β2 deformation. Comparison with experimental data.

doi: 10.1103/PhysRevC.93.064314
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2016TA03      Phys.Rev. C 93, 024323 (2016)

S.Tagami, Y.R.Shimizu

Infinitesimal cranking for triaxial angular-momentum-projected configuration-mixing calculations and its application to the γ vibrational band

NUCLEAR STRUCTURE 164Er; calculated levels, J, π, γ-vibrational bands, B(E2), B(E2) ratios using triaxial angular-momentum-projection method with Gogny D1S force as effective interaction. Discussed wobbling motion.

doi: 10.1103/PhysRevC.93.024323
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2015SH23      Prog.Theor.Exp.Phys. 2015, 063D02 (2015)

M.Shimada, S.Tagami, Y.R.Shimizu

Angular momentum projected multi-cranked configuration mixing for reliable calculation of high-spin rotational bands

NUCLEAR STRUCTURE 164Er, 40Mg, 152Dy; calculated excitation energy spectra of the ground-state rotational band, probability distribution over the five HFB configurations, angular momentum and rotational frequency, moments of inertia, B(E2). Comparison with available data.

doi: 10.1093/ptep/ptv073
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2015TA01      J.Phys.(London) G42, 15106 (2015)

S.Tagami, Y.R.Shimizu, J.Dudek

Tetrahedral symmetry in Zr nuclei: calculations of low-energy excitations with Gogny interaction

NUCLEAR STRUCTURE 80,96,110Zr; calculated the low energy excitation patterns, J, π, correlation energy. Realistic Gogny effective interactions.

doi: 10.1088/0954-3899/42/1/015106
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2014DU16      Phys.Scr. 89, 054007 (2014)

J.Dudek, D.Curien, D.Rouvel, K.Mazurek, Y.R.Shimizu, S.Tagami

The suggested presence of tetrahedral symmetry in the ground-state configuration of the 9640Zr56 nucleus

NUCLEAR STRUCTURE 76Ge, 74Se, 76Kr; calculated energy surface with deformations. 90Zr; calculated proton single-particle levels vs axial-symmetry octupole deformation and vs tetrahedral deformation. 96Zr; calculated low-lying levels, J, π, B(E1), B(E2), B(E3); deduced possible gs tetrahedral deformation. Mean field methods with point-group symmetries.

doi: 10.1088/0031-8949/89/5/054007
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2014TA32      Phys.Rev. C 90, 061305 (2014)

M.Takechi, S.Suzuki, D.Nishimura, M.Fukuda, T.Ohtsubo, M.Nagashima, T.Suzuki, T.Yamaguchi, A.Ozawa, T.Moriguchi, H.Ohishi, T.Sumikama, H.Geissel, N.Aoi, R.-J.Chen, D.-Q.Fang, N.Fukuda, S.Fukuoka, H.Furuki, N.Inabe, Y.Ishibashi, T.Itoh, T.Izumikawa, D.Kameda, T.Kubo, M.Lantz, C.S.Lee, Y.-G.Ma, K.Matsuta, M.Mihara, S.Momota, D.Nagae, R.Nishikiori, T.Niwa, T.Ohnishi, K.Okumura, M.Ohtake, T.Ogura, H.Sakurai, K.Sato, Y.Shimbara, H.Suzuki, H.Takeda, S.Takeuchi, K.Tanaka, M.Tanaka, H.Uenishi, M.Winkler, Y.Yanagisawa, S.Watanabe, K.Minomo, S.Tagami, M.Shimada, M.Kimura, T.Matsumoto, Y.R.Shimizu, M.Yahiro

Evidence of halo structure in 37Mg observed via reaction cross sections and intruder orbitals beyond the island of inversion

NUCLEAR REACTIONS 12C(24Mg, X), (25Mg, X), (26Mg, X), (27Mg, X), (28Mg, X), (29Mg, X), (30Mg, X), (31Mg, X), (32Mg, X), (33Mg, X), (34Mg, X), (35Mg, X), (36Mg, X), (37Mg, X), (38Mg, X), E=240 MeV/nucleon, [secondary Mg beams from 9Be(48Ca, X), E=345 MeV/nucleon primary reaction]; measured spectra and TOF of outgoing particles, precise reaction σ using BigRIPS spectrometer at RIBF-RIKEN facility. Comparison with theoretical deformation parameter β2 versus mass plot using double-folding model (DFM) calculation combined with antisymmetrized molecular dynamics (AMD) calculation. 37Mg; deduced deformed halo effect from observed enhanced cross section, comparison with DFM calculation based on the deformed Woods-Saxon (DWS) model; collapse of N=28 magic shell for neutrons.

doi: 10.1103/PhysRevC.90.061305
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetE2471.


2014TA36      Phys.Scr. 89, 054013 (2014)

S.Tagami, M.Shimada, Y.Fujioka, Y.R.Shimizu, J.Dudek

Nuclear tetrahedral states and high-spin states studied using the quantum number projection method

NUCLEAR STRUCTURE 80,81,82Zr, 104Rh; calculated low-lying levels, J, π; deduced rotational spectra for tetrahedral deformation. 163Lu; calculated low and high spin levels, J, π, B(E2), triaxial superdeformed states. 40Mg; calculated moment of inertia. HFB mean field with allowance for triaxial superdeformed nuclei and tetrahedral deformation; preliminary. Compared with available data.

doi: 10.1088/0031-8949/89/5/054013
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2014WA14      Phys.Rev. C 89, 044610 (2014)

S.Watanabe, K.Minomo, M.Shimada, S.Tagami, M.Kimura, M.Takechi, M.Fukuda, D.Nishimura, T.Suzuki, T.Matsumoto, Y.R.Shimizu, M.Yahiro

Ground-state properties of neutron-rich Mg isotopes

NUCLEAR REACTIONS 12C(24Mg, X), (25Mg, X), (26Mg, X), (27Mg, X), (28Mg, X), (29Mg, X), (30Mg, X), (31Mg, X), (32Mg, X), (33Mg, X), (34Mg, X), (35Mg, X), (36Mg, X), (37Mg, X), (38Mg, X), E=240 MeV/nucleon; calculated reaction σ; deduced rms matter radii from reaction cross sections. Antisymmetrized molecular dynamics (AMD) with folding model and deformed Woods-Saxon model. Comparison with experimental data, and with other theoretical calculations.

NUCLEAR STRUCTURE 24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40Mg; calculated ground state binding J, π, S(n), S(2n) for 40Mg, β and γ deformation parameters, proton, neutron and matter radii, neutron skin thickness. 37Mg; calculated levels, J, π, neutron single-particle energies. Antisymmetrized molecular dynamics (AMD) with folding model and deformed Woods-Saxon model. Comparison with experimental data.

doi: 10.1103/PhysRevC.89.044610
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2013CH02      J.Phys.(London) G40, 015101 (2013)

F.-Q.Chen, Y.Sun, P.M.Walker, G.D.Dracoulis, Y.R.Shimizu, J.A.Sheikh

Mixing effects on K-forbidden transition rates from the 6+ isomers in the N = 104 isotones

RADIOACTIVITY 172Er, 174Yb, 176Hf, 178W(IT); calculated B(E2) values for transitions from 6+ isomers, deformation parameters, transition rates, level energies, J, π, matrix elements. PSM calculations, comparison with experimental data.

doi: 10.1088/0954-3899/40/1/015101
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2013DU01      Acta Phys.Pol. B44, 305 (2013)

J.Dudek, D.Curien, A.Gozdz, Y.R.Shimizu, S.Tagami

Exotic Geometrical Symmetries in Nuclei: From Group Theory to Experiments

COMPILATION 156Gd; compiled experimental B(E2)/B(E1) ratios.

doi: 10.5506/APhysPolB.44.305
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2013SA41      Phys.Rev. C 88, 037602 (2013)

S.Sasabe, T.Matsumoto, S.Tagami, N.Furutachi, K.Minomo, Y.R.Shimizu, M.Yahiro

Reaction mechanism in odd-even staggering of reaction cross sections

NUCLEAR REACTIONS 12C(14C, X), (15C, X), (16C, X), E=83 MeV/nucleon; calculated matter radii, reaction σ, absorption probability, odd-even staggering parameter for reaction σ. Microscopic continuum discretized coupled-channels (CDCC) method, including projectile-breakup and nuclear-medium effects. Black-sphere scattering (BSS), and pairing anti-halo effects. Comparison with experimental data.

doi: 10.1103/PhysRevC.88.037602
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2013TA15      Phys.Rev. C 87, 054306 (2013)

S.Tagami, Y.R.Shimizu, J.Dudek

Microscopic study of tetrahedrally symmetric nuclei by an angular-momentum and parity projection method

NUCLEAR STRUCTURE 110Zr, 160Yb, 226Th; calculated levels, J, π, rotational energy spectra, tetrahedral and quadrupole deformed states, moments of inertia, neutron and proton pairing gaps. Microscopic Woods-Saxon mean-field and residual-interaction Hamiltonians with angular-momentum and parity projection method for deformed nuclei with tetrahedral doubly closed shell configurations. Comparison with experimental data.

doi: 10.1103/PhysRevC.87.054306
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2012MI01      Phys.Rev.Lett. 108, 052503 (2012)

K.Minomo, T.Sumi, M.Kimura, K.Ogata, Y.R.Shimizu, M.Yahiro

Determination of the Structure of 31Ne by a Fully Microscopic Framework

NUCLEAR REACTIONS 12C(28Ne, 28Ne'), (29Ne, 29Ne'), (30Ne, 30Ne'), (31Ne, 31Ne'), (32Ne, 32Ne'), E=240 MeV/nucleon; analyzed reaction σ. 28,29,30,31,32Ne; calculated deformed projectile density. Comparison with experimental data.

NUCLEAR STRUCTURE 28,29,30,31,32Ne; calculated J, π, deformation, neutron separation energy, ground state properties and halo structures. Comparison with experimental data.

doi: 10.1103/PhysRevLett.108.052503
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2012MI22      Prog.Theor.Phys.(Kyoto), Suppl. 196, 358 (2012)

K.Minomo, S.Watanabe, T.Sumi, M.Kimura, K.Ogata, Y.R.Shimizu, M.Yahiro

Deformation Effect on Total Reaction Cross Sections for Neutron-Rich Ne-Isotopes

NUCLEAR REACTIONS 12C(28Ne, 28Ne'), (29Ne, 29Ne'), (30Ne, 30Ne'), (31Ne, 31Ne'), (32Ne, 32Ne'), E=240 MeV/nucleon; analyzed available data. 28,29,30,31,32Ne; deduced σ using antisymmetrized molecular dynamics. Comparison with available data.

doi: 10.1143/PTPS.196.358
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2012SU09      Phys.Rev. C 85, 064613 (2012)

T.Sumi, K.Minomo, S.Tagami, M.Kimura, T.Matsumoto, K.Ogata, Y.R.Shimizu, M.Yahiro

Deformation of Ne isotopes in the region of the island of inversion

NUCLEAR REACTIONS 12C(28Ne, 28Ne), (29Ne, 29Ne), (30Ne, 30Ne), (31Ne, 31Ne), (32Ne, 32Ne), E=240 MeV/nucleon; calculated σ. 12C(12C, 12C), E=74.25, 135 MeV/nucleon; calculated σ(E, θ). Double folding model with Melbourne g-matrix interaction and the nuclear densities calculated by antisymmetrized molecular dynamics (AMD). Effects of pairing correlation. Comparison with experimental data.

NUCLEAR STRUCTURE 20,21,22,23,24,25,26,27,28,29,30,31,32Ne; calculated ground state J, π, deformation parameters β2, β4 and γ, S(n), total binding energy, matter rms radii, neutron and proton rms radii and density profiles, pairing effects on total binding energy. AMD, spherical Gogny-HF and -HFB calculations. 31Ne; halo nucleus.

doi: 10.1103/PhysRevC.85.064613
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2012TA16      Prog.Theor.Phys.(Kyoto), Suppl. 196, 334 (2012)

S.Tagami, Y.R.Shimizu, J.Dudek

Efficient Method for Quantum Number Projection and Its Application to Tetrahedral Nuclear States

NUCLEAR STRUCTURE 108,110Zr; calculated energy spectra of tetrahedral deformation, moment of inertia, energy levels, J, π. HFB type mean field calculations.

doi: 10.1143/PTPS.196.334
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2012TA21      Phys.Rev. C 86, 064323 (2012)

S.Takahara, N.Tajima, Y.R.Shimizu

Nuclear prolate-shape dominance with the Woods-Saxon potential

NUCLEAR STRUCTURE Z=8-126, N=8-184; calculated quadrupole deformation contour maps for 2148 even-even nuclei between the drip lines using six different parameter sets of the Woods-Saxon (WS) potential. Influence of surface thickness, strength of spin-orbit potential, and strength of pairing correlations. Comparison with results of Nilsson potential. Prolate-shape predominance of nuclear ground-state deformation.

ATOMIC MASSES Z=8-126, N=8-184; calculated masses, nuclear total energy surface versus β2 and β4 deformation parameters for 2148 even-even nuclei using modified Strutinsky method with each of the 589 types of WS potentials.

doi: 10.1103/PhysRevC.86.064323
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2011MI13      Phys.Rev. C 84, 034602 (2011)

K.Minomo, T.Sumi, M.Kimura, K.Ogata, Y.R.Shimizu, M.Yahiro

Deformation effect on total reaction cross sections for neutron-rich Ne isotopes

NUCLEAR REACTIONS 12C(28Ne, X), (29Ne, X), (30Ne, X), (31Ne, X), (32Ne, X), E=240 MeV/nucleon; analyzed cross sections, and matter rms radii. Double-folding model with the Melbourne g matrix, density of the projectile from the mean-field model with the deformed Woods-Saxon potential, deformation evaluated by antisymmetrized molecular dynamics. Effect of deformation on cross section.

doi: 10.1103/PhysRevC.84.034602
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2011OG12      J.Phys.:Conf.Ser. 312, 082008 (2011)

K.Ogata, T.Matsumoto, S.Hashimoto, K.Minomo, T.Egami, Y.Iseri, M.Kohno, S.Chiba, C.A.Bertulani, Y.R.Shimizu, M.Kamimura, M.Yahiro

Status of breakup reaction theory

NUCLEAR REACTIONS 7Li(d, γ), (d, n), (d, p), E=10-50 MeV; calculated σ. 90Zr(p, p), E=65, 800 MeV; calculated dσ with and without Brieva-Rook localization. 208Pb(8B, X), E=250 MeV/nucleon; calculated breakup σ including relativistic corrections. 209Bi(6He, 6He), E=22.5 MeV; calculated σ with and without breakup effects, B(E1) strength distribution. Three- and four-body CDCC.

doi: 10.1088/1742-6596/312/4/082008
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2010ON02      Phys.Rev. C 82, 034310 (2010)

T.Ono, Y.R.Shimizu, N.Tajima, S.Takahara

Method to circumvent the neutron-gas problem in the BCS treatment for nuclei far from stability

NUCLEAR STRUCTURE 88Ni, 120,160Sn, 126Zr, 160,208Dy, 256Hg; calculated neutron rms radii and neutron deformation parameters. 78,80,82,84,86,88,90,92,94Ni; calculated neutron radii. 108,110,112,114,116,118,120,122,124,126,128Sn; calculated neutron skin thickness and comparison with experimental data. 40Mg; calculated neutron's contribution to moment of inertia as a function of neutron pairing gap. New Kruppa-BCS method for the continuum level density.

doi: 10.1103/PhysRevC.82.034310
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2010TA19      Phys.Rev. C 82, 034316 (2010)

N.Tajima, Y.R.Shimizu, S.Takahara

Improved microscopic-macroscopic approach incorporating the effects of continuum states

NUCLEAR STRUCTURE 48Ca, 90Zr, 146Gd, 166,226Er, 208,242Pb, 298Fl; calculated Neutron shell correction energies and the sum of single-particle energies. 154Er, 208Pb; calculated neutrons level densities and Kruppa level densities. Z=68, N=56-166; calculated neutrons pairing force strength, pairing gaps and proton and neutron Fermi levels for even-even nuclei. Z=8-120, N=10-180; calculated two-nucleon drip lines. Oscillator-basis Thomas-Fermi (OBTF) approximation and Kruppa level density method with modified BCS equations.

doi: 10.1103/PhysRevC.82.034316
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2009LE16      Acta Phys.Pol. B40, 555 (2009)

S.Leoni, G.Benzoni, N.Blasi, A.Bracco, S.Brambilla, F.Camera, A.Corsi, F.C.L.Crespi, P.Mason, B.Million, D.Montanari, M.Pignanelli, E.Vigezzi, O.Wieland, M.Matsuo, Y.R.Shimizu, P.Bednarczyk, M.Castoldi, D.Curien, G.G.Duchene, B.Herskind, M.Kmiecik, A.Maj, W.Meczynski, J.Robin, J.Styczen, M.Zieblinski, K.Zuber, A.Zucchiatti

Warm Nuclei: Nuclear Structure Effects on the Order-to-Chaos Transition Region


2009LE18      Phys.Rev. C 79, 064306 (2009)

S.Leoni, G.Benzoni, N.Blasi, A.Bracco, F.Camera, A.Corsi, F.C.L.Crespi, P.Mason, B.Million, D.Montanari, M.Pignanelli, E.Vigezzi, O.Wieland, M.Matsuo, Y.R.Shimizu, D.Curien, G.Duchene, J.Robin, P.Bednarczyk, M.Castoldi, B.Herskind, M.Kmiecik, A.Maj, W.Meczynski, J.Styczen, M.Zieblinski, K.Zuber, A.Zucchiatti

Rotation and shape changes in 151Tb and 196Pb: Probes of nuclear structure and tunneling process in warm nuclei. I. Experimental analysis

NUCLEAR REACTIONS 130Te(27Al, 6n)151Tb, E=155 MeV; 170Er(30Si, 4n)196Pb, E=148 MeV; measured Eγ, Iγ, γγ-coin, γ multiplicity, quasicontinuum γ-ray spectra; deduced Monte Carlo simulation of γ decay based on microscopically calculated levels, E2 decay probabilities, potential barriers between normal and superdeformed wells and collective mass parameters. 151Tb, 196Pb; deduced normal and superdeformed bands, and E1 strength functions. Comparison with cranked shell-model calculations.

doi: 10.1103/PhysRevC.79.064306
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Data from this article have been entered in the XUNDL database. For more information, click here.


2009LE19      Phys.Rev. C 79, 064307 (2009)

S.Leoni, G.Benzoni, N.Blasi, A.Bracco, F.Camera, A.Corsi, F.C.L.Crespi, P.Mason, B.Million, D.Montanari, M.Pignanelli, E.Vigezzi, O.Wieland, M.Matsuo, Y.R.Shimizu, D.Curien, G.Duchene, J.Robin, P.Bednarczyk, M.Castoldi, B.Herskind, M.Kmiecik, A.Maj, W.Meczynski, J.Styczen, M.Zieblinski, K.Zuber, A.Zucchiatti

Rotation and shape changes in 151Tb and 196Pb: Probes of nuclear structure and tunneling process in warm nuclei. II. Microscopic Monte Carlo simulation

NUCLEAR STRUCTURE 151Tb, 196Pb; analyzed tunneling action S(E, spin), yrast normal-deformed and superdeformed states, γ decay intensity profiles as a function of spin, B(E1) and B(E2) strengths, dependence of intensity at the decay out of yrast SD bands, σ as a function of spin, spin entry distributions, level densities, population intensities and Eγ as a function of spin, excitation energies, E2 branching number as a function of excitation energy, number of discrete excited superdeformed bands, number of admixed states, B(E2) strength functions, strength functions for two consecutive E2 γ rays, and intensities of wide, narrow and discrete components of strength function as a function of spin. Monte Carlo simulation of γ decay of superdeformed nuclei with microscopically calculated levels using cranked shell-model calculations. Comparison with experimental data.

doi: 10.1103/PhysRevC.79.064307
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2009SH04      Prog.Theor.Phys.(Kyoto) 121, 319 (2009)

T.Shoji, Y.R.Shimizu

Microscopic Calculation of the Wobbling Excitations Employing the Woods-Saxon Potential as a Nuclear Mean-Field

doi: 10.1143/PTP.121.319
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2009YA20      Phys.Rev. C 80, 064301 (2009)

M.Yamagami, Y.R.Shimizu, T.Nakatsukasa

Optimal pair density functional for the description of nuclei with large neutron excess

NUCLEAR STRUCTURE A=118-196; calculated proton and neutron pairing gaps and rms deviations using Hartree-Fock-Bogoliubov (HFB) method for 156 nuclei in the A=118-196 range and with (N-Z)/A<0.25. Optimization of parameters in the pair density-functional (DF) for large neutron excess nuclei. Comparison with experimental data.

doi: 10.1103/PhysRevC.80.064301
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2008LE21      Phys.Rev.Lett. 101, 142502 (2008)

S.Leoni, G.Benzoni, N.Blasi, A.Bracco, S.Brambilla, F.Camera, A.Corsi, F.C.L.Crespi, P.Mason, B.Million, D.Montanari, M.Pignanelli, E.Vigezzi, O.Wieland, M.Matsuo, Y.R.Shimizu, D.Curien, G.Duchene, J.Robin, P.Bednarczyk, M.Castoldi, B.Herskind, M.Kmiecik, A.Maj, W.Meczynski, J.Styczen, M.Zieblinski, K.Zuber, A.Zucchiatti

Probing the Order-to-Chaos Region in Superdeformed 151Tb and 196Pb Nuclei with Continuum γ Transitions

NUCLEAR REACTIONS 130Te(27Al, 6n), E=155 MeV; 170Er(30Si, 4n), E=148 MeV; measured Eγ, Iγ, γγ coin. Compared results to model calculations. Continuum γ transitions for Superdeformed nuclei.

doi: 10.1103/PhysRevLett.101.142502
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2008SH08      Phys.Rev. C 77, 024319 (2008)

Y.R.Shimizu, T.Shoji, M.Matsuzaki

Parametrizations of triaxial deformation and E2 transitions of the wobbling band

NUCLEAR STRUCTURE 163Lu; calculated triaxial deformation parameters, potential energy curves, B(E2).

doi: 10.1103/PhysRevC.77.024319
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2008YA14      Phys.Rev. C 77, 064319 (2008)

M.Yamagami, Y.R.Shimizu

Pairing effects for rotational excitations unique to neutron-rich nuclei

NUCLEAR STRUCTURE 30,32,34,36,38,40Mg; calculated neutron and proton pairing gaps, neutron moments of inertia, excitation energies of 2+ states. 60,62,64,66,68,70,72,74,76,78Cr; calculated neutron and proton pairing gaps, excitation energies of 2+ states. 40Mg; calculated neutron correlation densities. Hartree-Fock-Bogoliubov model.

doi: 10.1103/PhysRevC.77.064319
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2006CH09      Phys.Rev. C 73, 021301 (2006)

C.J.Chiara, D.G.Sarantites, M.Montero, J.O'Brien, W.Reviol, O.L.Pechenaya, R.M.Clark, P.Fallon, A.Gorgen, A.O.Macchiavelli, D.Ward, Y.R.Shimizu, W.Satula

Decay-out properties of a linked superdeformed band in 84Zr

NUCLEAR REACTIONS 58Ni(32S, 2pα), E=140 MeV; measured Eγ, Iγ, γγ-, (charged particle)γ-coin. 84Zr deduced high-spin levels, J, π, superdeformed bands, linking transitions. Gammasphere, Microball arrays. Potential energy surface calculations.

doi: 10.1103/PhysRevC.73.021301
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2006CH57      Phys.Scr. T125, 119 (2006)

C.J.Chiara, D.G.Sarantites, M.Montero, J.O'Brien, W.Reviol, O.L.Pechenaya, R.M.Clark, P.Fallon, A.Gorgen, A.O.Macchiavelli, D.Ward, W.Satula, Y.R.Shimizu

Linking transitions in the A ≈ 80 region of superdeformation

NUCLEAR REACTIONS 58Ni(32S, 2pα), E=140 MeV; measured Eγ, Iγ, γγ-, (charged particle)γ-coin. 84Zr deduced superdeformed band transitions, linking transitions to normal-deformed states. Gammasphere, Microball arrays.

doi: 10.1088/0031-8949/2006/T125/027
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2006SH25      Int.J.Mod.Phys. E15, 1407 (2006)

T.Shoji, Y.R.Shimizu

Microscopic description of nuclear wobbling motion rotation of triaxially deformed nuclei

NUCLEAR STRUCTURE 163Lu; calculated potential energy surfaces, rotational band energies, B(E2); deduced wobbling-like mode.

doi: 10.1142/S021830130600496X
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2006SH26      Phys.Scr. T125, 134 (2006)

Y.R.Shimizu, M.Matsuzaki, K.Matsuyanagi

Precession mode on high-K configurations: non-collective axially-symmetric limit of wobbling motion

NUCLEAR STRUCTURE 178W; calculated precession band energies, (gK-gR). 163Lu; calculated triaxial deformation, B(E2) ratios. RPA approach.

doi: 10.1088/0031-8949/2006/T125/031
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2006TA13      Phys.Rev. C 73, 044306 (2006)

S.K.Tandel, P.Chowdhury, E.H.Seabury, I.Ahmad, M.P.Carpenter, S.M.Fischer, R.V.F.Janssens, T.L.Khoo, T.Lauritsen, C.J.Lister, D.Seweryniak, Y.R.Shimizu

High-K isomers and rotational structures in 174W

NUCLEAR REACTIONS 128Te(50Ti, 4n), E=215, 225 MeV; measured prompt and delayed Eγ, Iγ, γγ-coin. 174W deduced high-spin levels, J, π, configurations, high-K isomeric states T1/2. Gammasphere array, comparison with cranked mean-field model predictions.

doi: 10.1103/PhysRevC.73.044306
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2005MA53      Prog.Theor.Phys.(Kyoto) 114, 281 (2005)

M.Matsuzaki, Y.R.Shimizu

Magnetic Properties of Precession Modes Built on High-K Multi-Quasiparticle States in 178W

NUCLEAR STRUCTURE 178W; calculated level energies, g factors for high-K multi-quasiparticle states. RPA approach.

doi: 10.1143/PTP.114.281
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2005SH29      Phys.Rev. C 72, 014306 (2005)

Y.R.Shimizu, M.Matsuzaki, K.Matsuyanagi

High-K precession modes: Axially symmetric limit of wobbling motion in the cranked random-phase approximation description

NUCLEAR STRUCTURE 178W; calculated high-K configurations excitation energies, B(M1), B(E2), precessional rotation. RPA approach.

doi: 10.1103/PhysRevC.72.014306
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2004MA21      Phys.Rev. C 69, 034325 (2004); Erratum Phys.Rev. C 69, 049901 (2004)

M.Matsuzaki, Y.R.Shimizu, K.Matsuyanagi

Nuclear moments of inertia and wobbling motions in triaxial superdeformed nuclei

NUCLEAR STRUCTURE 167Lu, 168Hf; calculated rotational bands wobbling motion excitation energy, deformation dependence, moments of inertia, B(E2), related features. Cranked shell model, RPA.

doi: 10.1103/PhysRevC.69.034325
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2004MA34      Eur.Phys.J. A 20, 189 (2004)

M.Matsuzaki, Y.R.Shimizu, K.Matsuyanagi

Dynamical moments of inertia associated with wobbling motion in the triaxial superdeformed nucleus

NUCLEAR STRUCTURE 163Lu; calculated rotational bands moments of inertia. 168Hf, 161,163,165,167,169Lu; calculated wobbling mode excitation energies. RPA approach.

doi: 10.1140/epja/i2002-10350-y
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2004SH08      Phys.Rev. C 69, 024305 (2004)

T.Shizuma, S.Mitarai, G.Sletten, R.A.Bark, N.L.Gjorup, H.J.Jensen, M.Piiparinen, J.Wrzesinski, Y.R.Shimizu

High-spin structure in 185Os

NUCLEAR REACTIONS 176Yb(13C, 4n), E=65 MeV; measured Eγ, Iγ, γγ-coin. 185Os deduced high-spin levels, J, π, configurations, isomer T1/2, g(K)-g(R). Nordball array, potential energy surface calculations.

doi: 10.1103/PhysRevC.69.024305
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2003OH01      Nucl.Phys. A714, 44 (2003)

S.-I.Ohtsubo, Y.R.Shimizu

Calculation of strongly-coupled rotational bands in terms of the tilted axis cranking model

NUCLEAR STRUCTURE 153Sm, 155,157Gd, 157,159Dy; calculated rotational bands energies, B(M1)/B(E2). Tilted axis cranking model, comparison with data and other models.

doi: 10.1016/S0375-9474(02)01356-8
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2002MA20      Phys.Rev. C65, 041303 (2002)

M.Matsuzaki, Y.R.Shimizu, K.Matsuyanagi

Wobbling Motion in Atomic Nuclei with Positive-γ Shapes

NUCLEAR STRUCTURE 163Lu; calculated moments of inertia for triaxial superdeformed band, transitions B(E2), B(M1); deduced role of proton alignment in wobbling mode. 147Gd; calculated rotational band moments of inertia. RPA calculations.

doi: 10.1103/PhysRevC.65.041303
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2002SH41      J.Nucl.Sci.Technol.(Tokyo) 39, 1137 (2002)

T.Shizuma, Y.R.Shimizu, T.Hayakawa

Tunneling in High-K Isomeric Decays

NUCLEAR STRUCTURE 170Dy; calculated potential energy surface. 172,174Hf, 176,177,178,179,182W, 182,183,184,186Os; calculated hindrance factors for high-K isomeric decay. Dy, Er, Yb, Hf, W, Os; calculated tunneling probabilities. Tunneling model, comparisons with data.

doi: 10.1080/18811248.2002.9715304
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2002TA30      Prog.Theor.Phys.(Kyoto), Suppl. 146, 628 (2002)

N.Tajima, Y.R.Shimizu, N.Suzuki

Origin of Prolate Dominance of Nuclear Deformation

doi: 10.1143/PTPS.146.628
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2001SH11      Nucl.Phys. A682, 464c (2001)

Y.R.Shimizu, M.Matsuo, K.Yoshida

Theoretical Study of the Decay-Out Spin of Superdeformed Bands in the Dy and Hg Regions

NUCLEAR STRUCTURE 143,144Eu, 144,146,147,148,149,150Gd, 150,151Tb, 151,152Dy, 191Au, 190,191,192,193,194Hg, 193Tl, 193,194,195,196Pb, 197Bi; calculated superdeformed band transition intensities; deduced decay-out spin. Compound mixing model, comparison with data.

doi: 10.1016/S0375-9474(00)00674-6
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2001SH32      Prog.Theor.Phys.(Kyoto), Suppl. 141, 285 (2001)

Y.R.Shimizu, K.Matsuyanagi

Diabatic Mean-Field Description of Rotational Bands in Terms of the Selfconsistent Collective Coordinate Method

doi: 10.1143/PTPS.141.285
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2001SH41      Nucl.Phys. A696, 337 (2001)

T.Shizuma, K.Matsuura, Y.Toh, Y.Hayakawa, M.Oshima, Y.Hatsukawa, M.Matsuda, K.Furuno, Y.Sasaki, T.Komatsubara, Y.R.Shimizu

Multi-Quasiparticle States and K-Forbidden Transitions in 183Os

NUCLEAR REACTIONS 170Er(18O, 5n), E=85 MeV; measured Eγ, Iγ, γγ-coin. 183Os deduced high-spin levels, J, π, configurations, T1/2, | gK - gR | /Q0.

doi: 10.1016/S0375-9474(01)01210-6
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2001YO11      Nucl.Phys. A696, 85 (2001)

K.Yoshida, M.Matsuo, Y.R.Shimizu

Barrier Penetration and Rotational Damping of Thermally Excited Superdeformed Nuclei

NUCLEAR STRUCTURE 143Eu, 152Dy, 192Hg; calculated potential energy surfaces, superdeformed bands level energy vs spin, decay-out transition features. Cranked Nilsson-Strutinsky approach, rotational damping from two-body residual interaction.

doi: 10.1016/S0375-9474(01)01123-X
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2000DO07      Phys.Rev.Lett. 84, 4317 (2000)

P.Donati, T.Dossing, Y.R.Shimizu, S.Mizutori, P.F.Bortignon, R.A.Broglia

Effective Nucleon Mass in Deformed Nuclei

NUCLEAR STRUCTURE 168Yb; calculated nucleon effective mass vs rotational frequency. 169Yb; calculated quadrupole RPA response functions.

doi: 10.1103/PhysRevLett.84.4317
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2000SH36      Phys.Rev.Lett. 85, 2260 (2000)

Y.R.Shimizu, P.Donati, R.A.Broglia

Response Function Technique for Calculating the Random-Phase Approximation Correlation Energy

NUCLEAR STRUCTURE 164Er; calculated rotational bands pairing gap, RPA correlation energy. Response function technique.

doi: 10.1103/PhysRevLett.85.2260
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1999DO08      Nucl.Phys. A649, 25c (1999)

P.Donati, T.Dossing, Y.R.Shimizu, P.F.Bortignon, R.A.Broglia

Self-Energy of Single-Particle States in Deformed, Rapidly Rotating Nuclei

doi: 10.1016/S0375-9474(99)00034-2
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1999DO12      Nucl.Phys. A653, 27 (1999)

P.Donati, T.Dossing, Y.R.Shimizu, P.F.Bortignon, R.A.Broglia

A Complex Integration Technique to Remove Spurious States Associated with Spontaneously Broken Symmetries in RPA Calculations

NUCLEAR STRUCTURE 168Yb; calculated RPA response functions. Method for removal of spurious states.

doi: 10.1016/S0375-9474(99)00155-4
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1999DO15      Nucl.Phys. A653, 225 (1999)

P.Donati, T.Dossing, Y.R.Shimizu, P.F.Bortignon, R.A.Broglia

Nucleon-Phonon Coupling in Hot, Rapidly Rotating Nuclei (I)

doi: 10.1016/S0375-9474(99)00242-0
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1999HA48      Nucl.Phys. A657, 3 (1999)

T.Hayakawa, M.Oshima, Y.Hatsukawa, J.Katakura, H.Iimura, M.Matsuda, S.Mitarai, Y.R.Shimizu, S.-I.Ohtsubo, T.Shizuma, M.Sugawara, H.Kusakari

Rotational Bands of 155Gd

NUCLEAR REACTIONS 150Nd(12C, 3nα), (12C, 2nα), E=65 MeV; measured Eγ, Iγ, γγ-, (charged particle)γ-coin. 155Gd deduced high-spin levels, J, π, B(M1)/B(E2). 156Gd deduced high-spin levels, J, π. Tilted axis cranking analysis.

doi: 10.1016/S0375-9474(99)00322-X
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1999NA16      J.Phys.(London) G25, 795 (1999)

T.Nakatsukasa, Y.R.Shimizu

Microscopic Calculation of Transition Intensities for Vibrational Bands and High-K Isomers

NUCLEAR STRUCTURE 166Er, 232Th; calculated vibrational bands transitions B(E1), B(E2). 170,172,174,176,178,180Hf; calculated high-K isomers hindrance factors; deduced effects of residual correlations. Cranking formalism, microscopic approach.

doi: 10.1088/0954-3899/25/4/039
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1997GE07      Nucl.Phys. A624, 257 (1997)

G.Gervais, D.C.Radford, Y.R.Shimizu, M.Cromaz, J.DeGraaf, T.E.Drake, S.Flibotte, A.Galindo-Uribarri, D.S.Haslip, V.P.Janzen, M.Matsuzaki, S.M.Mullins, J.M.Nieminen, C.E.Svensson, J.C.Waddington, D.Ward, J.N.Wilson

Collective γ-Vibrational Bands in 165Ho and 167Er

NUCLEAR REACTIONS 165Ho, 167Er(209Bi, 209Bi'), E=5.4 MeV/nucleon; measured Eγ, Iγ, γγ-coin following Coulomb excitation. 165Ho, 167Er deduced high-spin levels, J, π, K, γ-vibrational bands, signature splitting energies, intrinsic moment ratios, identical bands. Compton-suppressed hyperpure Ge detector array, 4π BGO ball. Cranked shell model plus RPA plus particle-vibration coupling calculations.

doi: 10.1016/S0375-9474(97)00320-5
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1997OH08      Prog.Theor.Phys.(Kyoto) 98, 1099 (1997)

S.-I.Ohtsubo, Y.R.Shimizu

Tilted Axis Cranking Applied to a System of One-Quasiparticle Coupled to a Triaxial Rotor

doi: 10.1143/PTP.98.1099
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1997SH36      Nucl.Phys. A626, 760 (1997)

T.Shizuma, G.Sletten, R.A.Bark, I.G.Bearden, S.Leoni, M.Mattiuzzi, S.Mitarai, S.W.Odegard, S.Skoda, K.Strahle, J.Wrzesinski, Y.R.Shimizu

Multi-Quasiparticle States and K-Forbiddenness in 177W

NUCLEAR REACTIONS 164Dy(18O, 5n), E=83 MeV; measured Eγ, Iγ, γγ-coin, DCO. 177W deduced high-spin levels J, π, δ, configurations, g-factors, isomer T1/2.

doi: 10.1016/S0375-9474(97)00585-X
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1996NA07      Phys.Rev. C53, 2213 (1996)

T.Nakatsukasa, K.Matsuyanagi, S.Mizutori, Y.R.Shimizu

Microscopic Structure of High-Spin Vibrational Excitations in Superdeformed 190,192,194Hg

NUCLEAR STRUCTURE 190,192,194Hg; calculated octupole, (γ) vibrations excitation energy, B(λ), superdeformed bands dynamic moments of inertia. Cranked shell model extended by RPA.

doi: 10.1103/PhysRevC.53.2213
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1996NA12      Nucl.Phys. A601, 69 (1996)

K.Narimatsu, Y.R.Shimizu, T.Shizuma

γ-Tunneling Calculations for the Decays of the K Isomers in the Hf, W, Os Region

NUCLEAR STRUCTURE 171,172,174,175,176,177,178Hf, 176,178,179,181,182W, 181,182,184Os; calculated high-K isomer M1, E2-decay T1/2. Simple tunneling model, γ-degree of freedom.

doi: 10.1016/0375-9474(96)00021-8
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1996SH23      Nucl.Phys. A611, 22 (1996)

Y.R.Shimizu, T.Nakatsukasa

A New Microscopic Approach to the Rotational Intensity Relations: Application of the high-spin cranking formalism

NUCLEAR STRUCTURE 156,158,160Gd, 160,162,164Dy, 166,168,170Er; calculated B(λ), transition quadrupole moments GIR parameters. Microscopic approach to rotational intensity relations, high-spin cranking formalism.

doi: 10.1016/S0375-9474(96)00304-1
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1996TA14      Prog.Theor.Phys.(Kyoto) 95, 1121 (1996)

K.Takada, Y.R.Shimizu

Two-Octupole-Phonon States in 146,148Gd

NUCLEAR STRUCTURE 146,148Gd; calculated levels, B(λ); deduced Dyson boson mapping method applicability to two-octupole-phonon states.

doi: 10.1143/PTP.95.1121
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1996WA11      Nucl.Phys. A600, 88 (1996)

D.Ward, H.R.Andrews, G.C.Ball, A.Galindo-Uribarri, V.P.Janzen, T.Nakatsukasa, D.C.Radford, T.E.Drake, J.DeGraaf, S.Pilotte, Y.R.Shimizu

Rotational Bands in 238U

NUCLEAR REACTIONS 238U(209Bi, 209Bi'), E=1.13, 1.33 GeV; measured Eγ, Iγ, γγ-coin following Coulomb excitation. 238U deduced levels, J, π, K, band structure. Compton suppressed hyperpure Ge detector array, 4π-BGO ball. Cranked RPA calculation.

doi: 10.1016/0375-9474(95)00490-4
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1995MI20      Phys.Scr. T56, 276 (1995)

S.Mizutori, Y.R.Shimizu, K.Matsuyanagi

Microscopic Structure of Octupole Correlations at High-Spin in Superdeformed Open-Shell Nuclei

NUCLEAR STRUCTURE 146Nd, 148Sm, 150Gd, 152Dy, 154Er; calculated octupole strength function; deduced superdeformed bands octupole softness related features.

doi: 10.1088/0031-8949/1995/T56/048
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1995SH17      Nucl.Phys. A588, 559 (1995)

Y.R.Shimizu, M.Matsuzaki

Nuclear Wobbling Motion and Electromagnetic Transitions

NUCLEAR STRUCTURE 124Xe, 126Ba; calculated Routhians, effective moments of inertia, B(λ). Microscopic approach, nuclear wobbling motion.

doi: 10.1016/0375-9474(94)00823-6
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1993BE51      Nucl.Phys. A565, 495 (1993)

M.Bernath, R.A.Broglia, Y.R.Shimizu, J.H.Sorensen, E.Vigezzi

Pairing Phase Transition and Two-Nucleon Transfer Reactions in Rotating Nuclei

NUCLEAR STRUCTURE 162,164Er; calculated alignment plots, g-, s-band neutron pairing gaps. Two-band model.

NUCLEAR REACTIONS 162Er(208Pb, 206Pb), E=1 GeV; calculated σ(θ). Two-band model.

doi: 10.1016/0375-9474(93)90223-K
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1993MI10      Nucl.Phys. A557, 125c (1993)

S.Mizutori, T.Nakatsukasa, K.Arita, Y.R.Shimizu, K.Matsuyanagi

Octupole Correlations in Superdeformed High-Spin States

NUCLEAR STRUCTURE 158,156,154,152,150,148,146,144,142Gd, 184,186,188,190,192,194,196,198,200Hg; calculated curvature against octupole deformation, stretched octupole strengths; deduced octupole instability, superdeformed shape relationship.

doi: 10.1016/0375-9474(93)90536-7
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1993SH18      Nucl.Phys. A557, 99c (1993)

Y.R.Shimizu, E.Vigezzi, T.Dossing, R.A.Broglia

Tunneling Probability for Decays Out of Superdeformed Bands

NUCLEAR STRUCTURE 151,152Dy, 192Hg; 143Eu, 146,147,148,149,150Gd, 150,151Tb; analyzed data; deduced tunneling probability for decays out of superdeformed bands.

doi: 10.1016/0375-9474(93)90534-5
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1992SH04      Phys.Lett. 274B, 253 (1992)

Y.R.Shimizu, F.Barranco, R.A.Broglia, T.Dossing, E.Vigezzi

Superfluid Tunneling in Superdeformed Nuclei

NUCLEAR STRUCTURE 152Dy; calculated potential energy vs adiabatic path. 149,150Gd, 150,151Tb, 151,152Dy; calculated invariant adiabatic action vs angular momentum, superdeformed band decay related parameter. Superfluid tunneling model.

doi: 10.1016/0370-2693(92)91983-G
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1991MI07      Prog.Theor.Phys.(Kyoto) 85, 559 (1991)

S.Mizutori, Y.R.Shimizu, K.Matsuyanagi

Octupole Vibrations with K = 1 and 2 in Superconducting, Superdeformed Nuclei

NUCLEAR STRUCTURE 192Hg, 144Gd; calculated octupole strength functions, superdeformed nuclei. RPA.

doi: 10.1143/ptp/85.3.559
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1991TA04      Nucl.Phys. A523, 354 (1991)

K.Takada, Y.R.Shimizu

Two-Octupole-Phonon States in 208Pb

NUCLEAR STRUCTURE 208Pb; calculated levels, B(λ). Collective multi-phonon space, Dyson boson mapping.

doi: 10.1016/0375-9474(91)90008-T
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1990MI13      Prog.Theor.Phys.(Kyoto) 83, 666 (1990)

S.Mizutori, Y.R.Shimizu, K.Matsuyanagi

Octupole Vibrations Built on Superdeformed Rotational Bands

NUCLEAR STRUCTURE 152Dy; calculated giant octupole resonance strength functions; deduced resonances built on superdeformed band states. Cranking model based RPA.

doi: 10.1143/PTP.83.666
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1990SH05      Nucl.Phys. A509, 80 (1990)

Y.R.Shimizu, E.Vigezzi, R.A.Broglia

Effects of Pairing Correlations on Superdeformed Bands in the A ≈ 150 Region

NUCLEAR STRUCTURE 150,149,148Gd, 150,151,152Tb, 151,152,153Dy; calculated deformation, superdeformation band structure, moments of interia. Pair correlations, different models.

doi: 10.1016/0375-9474(90)90376-W
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1990SH07      Phys.Rev. C41, 1861 (1990)

Y.R.Shimizu, E.Vigezzi, R.A.Broglia

Inertias of Superdeformed Bands

NUCLEAR STRUCTURE 149,150Gd, 152Dy; calculated superdeformed moment of inertia. Self-consistent treatment of nuclear deformation, pairing correlations.

doi: 10.1103/PhysRevC.41.1861
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1990SH08      Phys.Rev. C41, 1865 (1990)

Y.R.Shimizu, R.A.Broglia

Quantum Size Effects in Rapidly Rotating Nuclei

NUCLEAR STRUCTURE 166Yb; calculated effective pairing gap. 150Gd; calculated superdeformed band moments of inertia. RPA, strongly rotating nuclei.

doi: 10.1103/PhysRevC.41.1865
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1990SH21      Nucl.Phys. A515, 38 (1990)

Y.R.Shimizu, R.A.Broglia

A Comparison of the RPA and Number Projection Approaches for Calculations of Pairing Fluctuations in Fast Rotating Nuclei

NUCLEAR STRUCTURE 166Yb; calculated correlation energy vs rotational frequency, pairing force strength. 150Gd; calculated superdeformed band two moments of inertia. RPA, number projection methods.

doi: 10.1016/0375-9474(90)90321-C
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1990SH32      Nucl.Phys. A520, 477c (1990)

Y.R.Shimizu

How Can We Tell the Transition from the Superconducting to the Normal Phase ( Question )

NUCLEAR STRUCTURE 166,165Yb; calculated neutron static, number projection correlation energies, pairing gaps.

doi: 10.1016/0375-9474(90)91169-R
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1988MA26      Prog.Theor.Phys.(Kyoto) 79, 836 (1988)

M.Matsuzaki, Y.R.Shimizu, K.Matsuyanagi

Quasiparticle-Vibration Couplings in Rotating Triaxial Odd-A Nuclei

NUCLEAR STRUCTURE 157Ho, 159Tm, 161,165Lu, 161Dy, 167Er, 161,163,167Yb; calculated levels, B(λ), ratios, pairing gaps, deformation parameters. Quasiparticle-vibration coupling.

doi: 10.1143/PTP.79.836
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1988SH02      Nucl.Phys. A476, 228 (1988)

Y.R.Shimizu, R.A.Broglia

A Boson Expansion Approach for Including Fluctuations in the Calculation of the Pairing Phase Transition Taking Place in Strongly Rotating Nuclei

NUCLEAR STRUCTURE 166Yb; calculated neutron static pairing gap, routhians, alignment.

doi: 10.1016/0375-9474(88)90482-4
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1987MA43      Prog.Theor.Phys.(Kyoto) 77, 1302 (1987)

M.Matsuzaki, Y.R.Shimizu, K.Matsuyanagi

Signature Dependence of M1 and E2 Transitions in Rotating Triaxial Odd-A Nuclei

NUCLEAR STRUCTURE 165Lu, 157Ho; calculated levels, B(λ). Rotating triaxial nuclei.

doi: 10.1143/PTP.77.1302
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1987SH25      Phys.Lett. 198B, 33 (1987)

Y.R.Shimizu, E.Vigezzi, R.A.Broglia

Role of Static and Dynamic Pairing Correlations in the Superdeformed Band of 152Dy

NUCLEAR STRUCTURE 152Dy; calculated superdeformed configuration kinetic, dynamic moments of inertia, correlation energy; deduced pairing correlations role.

doi: 10.1016/0370-2693(87)90152-3
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1986SH23      Prog.Theor.Phys.(Kyoto) 75, 1161 (1986)

Y.R.Shimizu, K.Matsuyanagi

Monopole and Quadrupole Giant Resonances in Rotating Triaxially Deformed Nuclei. II - A Microscopic Description of the Isoscalar and Isovector Modes -

NUCLEAR STRUCTURE 158,164Er; calculated yrast state based monopole, quadrupole giant resonances, strength distributions. Deformed nuclei, microscopic model.

doi: 10.1143/PTP.75.1161
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1984SH11      Prog.Theor.Phys.(Kyoto) 71, 960 (1984)

Y.R.Shimizu, K.Matsuyanagi

Incipient Triaxial Deformations of the Rotation-Aligned Bands - Equilibrium Shapes Determined by the Isotropic Velocity Distribution Condition -

NUCLEAR STRUCTURE 154,156,158,160,162,164,166Er; calculated quadrupole, neutron, proton pairing, equilibrium deformations, energy surfaces. 168Yb, 156,158,160,162,164Dy; calculated quadrupole deformation. Stretched coordinates, Nilsson model.

doi: 10.1143/PTP.71.960
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1984SH29      Prog.Theor.Phys.(Kyoto) 72, 799 (1984)

Y.R.Shimizu, K.Matsuyanagi

Interplay of Gamma-Vibrations and Aligned-Quasiparticles at High-Spin Yrast Region

NUCLEAR STRUCTURE 164Er; calculated levels, rotational bands, yrast spectra; deduced band collectivity behavior. Self consistent diabatic quasiparticle basis, RPA.

doi: 10.1143/PTP.72.799
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1984SH35      Prog.Theor.Phys.(Kyoto) 72, 1017 (1984)

Y.R.Shimizu, K.Matsuyanagi

Monopole and Quadrupole Giant Resonances in Rotating Triaxially Deformed Nuclei

NUCLEAR STRUCTURE 158,164Er; calculated giant monopole, GQR transition strength functions, EWSR, deformation parameters. RPA, rotating shell model.

doi: 10.1143/PTP.72.1017
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1983SH28      Prog.Theor.Phys.(Kyoto) 70, 144 (1983)

Y.R.Shimizu, K.Matsuyanagi

An Extension of the Rotating Shell Model and Its Application to 164Er

NUCLEAR STRUCTURE 164Er; calculated positive parity yrast spectrum; deduced s-band triaxial deformation onset. RPA, rotating potentials.

doi: 10.1143/PTP.70.144
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1983SH29      Prog.Theor.Phys.(Kyoto) 70, 319 (1983)

Y.R.Shimizu, K.Matsuyanagi

Residual Interactions between Aligned Quasiparticles and Pairing Deformation Changes in 165,166Yb and 164Er

NUCLEAR STRUCTURE 165,166Yb, 164Er; analyzed pairing deformation data; deduced residual interaction blocking effect connection. Quasiparticle Hamiltonian, rotating deformed potential.

doi: 10.1143/PTP.70.319
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1982SH14      Prog.Theor.Phys.(Kyoto) 67, 1641 (1982)

Y.R.Shimizu, K.Matsuyanagi

High-Spin Anomaly of Gamma Band and Rotation-Alignment Effects in 164Er

NUCLEAR STRUCTURE 164Er; calculated yrast spectrum, two-quasiparticle transition strength; deduced γ-vibrational mode character. Shell model plus RPA, rotating frame.

doi: 10.1143/PTP.67.1641
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1982SH15      Prog.Theor.Phys.(Kyoto) 67, 1637 (1982)

Y.R.Shimizu, K.Matsuyanagi

Rotational Frequency Dependence of Gamma Vibration and Pairing Potential in 164Er

NUCLEAR STRUCTURE 164Er; calculated γ-vibration energies, neutron pairing potential; deduced rotational frequency dependence on pairing potential.

doi: 10.1143/PTP.67.1637
Citations: PlumX Metrics


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