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NSR database version of April 24, 2024.

Search: Author = N.Tajima

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2015TA04      Phys.Rev. C 91, 014320 (2015)

N.Tajima

Analytical formula for numerical evaluations of the Wigner rotation matrices at high spins

doi: 10.1103/PhysRevC.91.014320
Citations: PlumX Metrics

2013TA20      J.Phys.:Conf.Ser. 445, 012014 (2013)

N.Tajima

Angular correlation between proton and neutron rotors

doi: 10.1088/1742-6596/445/1/012014
Citations: PlumX Metrics

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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2011TA32      Phys.Rev. C 84, 064316 (2011)

N.Tajima, T.Otsuka

Meaning of antiparallel proton and neutron angular momenta at low spins

doi: 10.1103/PhysRevC.84.064316
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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. ^{78,80,82,84,86,88,90,92,94}Ni; calculated neutron radii. ^{108,110,112,114,116,118,120,122,124,126,128}Sn; 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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2005TA35      Eur.Phys.J. A 25, Supplement 1, 571 (2005)

N.Tajima

Continuum effects on the pairing in neutron drip-line nuclei studied with the canonical-basis HFB method

doi: 10.1140/epjad/i2005-06-076-2
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2004TA06      Phys.Rev. C 69, 034305 (2004)

N.Tajima

Canonical-basis solution of the Hartree-Fock-Bogoliubov equation on a three-dimensional Cartesian mesh

NUCLEAR STRUCTURE ²⁸Si; calculated level energies, pairing energy, related features. Hartree-Fock-Bogoliubov approach, canonical-basis orbitals.

doi: 10.1103/PhysRevC.69.034305
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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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2001TA22      Phys.Rev. C64, 037301 (2001)

N.Tajima, N.Suzuki

Prolate Dominance of Nuclear Shape Caused by a Strong Interference between the Effects of Spin-Orbit and l² Terms of the Nilsson Potential

doi: 10.1103/PhysRevC.64.037301
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2001TA37      Prog.Theor.Phys.(Kyoto), Suppl. 142, 265 (2001)

N.Tajima

Hartree-Fock + BCS Approach to Unstable Nuclei with the Skyrme Force

NUCLEAR STRUCTURE Z=2-114; calculated masses, deformation parameters, radii. Hartree-Fock plus BCS approach, Skyrme force.

doi: 10.1143/PTPS.142.265
Citations: PlumX Metrics

1998OI01      Phys.Lett. 418B, 1 (1998)

M.Oi, N.Onishi, N.Tajima, T.Horibata

Signature and Angular Momentum in 3d-Cranked HFB States

doi: 10.1016/S0370-2693(97)01451-2
Citations: PlumX Metrics

1998TA23      Nucl.Phys. A642, 461 (1998)

S.Takahara, N.Tajima, N.Onishi

Study of Superdeformation in Non-Rotating States using the Skyrme-Hartree-Fock Method

NUCLEAR STRUCTURE ¹⁹⁴Hg, ^236,238U; calculated energy, pairing correlation vs deformation; deduced parameters. Z=36-82; calculated non-rotating superdeformed minima deformation, energy, barrier height. HF + BCS method, Skyrme interaction.

doi: 10.1016/S0375-9474(98)00535-1
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1997KI22      Z.Phys. A358, 381 (1997)

H.Kitagawa, N.Tajima, H.Sagawa

Reaction Cross Sections and Radii of A = 17 and A = 20 Isobars

NUCLEAR REACTIONS ⁹Be, ¹²C, ²⁷Al(¹⁷Ne, X), (¹⁷F, X), (¹⁷O, X), (¹⁷N, X), E=660-720 MeV/nucleon; ¹²C(²⁰C, X), (²⁰N, X), (²⁰O, X), (²⁰F, X), (²⁰Ne, X), (²⁰Na, X), (²⁰Mg, X), (²⁰Al, X), (²⁰Si, X), E not given; calculated reaction σ. Glauber model spherical, deformed Hartree-Fock, comparisons to data.

NUCLEAR STRUCTURE ¹⁷B, ^17,20C, ^17,20N, ^17,20O, ^17,20F, ^17,20Ne, ^17,20Na, ²⁰Mg, ²⁰Al, ²⁰Si; calculated rms radii related features, mass quadrupole moments, density contours for some nuclei. Hartree-Fock model, SGII force, comparison with experiment.

doi: 10.1007/s002180050345
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1996TA10      Nucl.Phys. A603, 23 (1996)

N.Tajima, S.Takahara, N.Onishi

Extensive Hartree-Fock + BCS Calculation with Skyrme SIII Force

NUCLEAR STRUCTURE Z=4-98; calculated intrinsic quadrupole moments, even-even nuclei. Z=2-114; calculated nucleon skin thicknesses, quadrupole, hexadecapole deformation vs N ≤ 180. Other aspects included, Hartree-Fock+BCS calculation, Skyrme SIII force.

doi: 10.1016/0375-9474(96)00156-X
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1995TA16      Nucl.Phys. A588, 215c (1995)

N.Tajima, N.Onishi, S.Takahara

Deformed Hartree-Fock Calculation of Proton-Rich Nuclei

NUCLEAR STRUCTURE Z=42-48; Z=52-58; calculated quadrupole deformation parameter vs N, two-proton separation energy. Even-even, proton rich nuclei, HF+BCS calculations, Skyrme interactions, other aspects also studied.

doi: 10.1016/0375-9474(95)00142-N
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1994BO24      Nucl.Phys. A574, 185c (1994)

P.Bonche, E.Chabanat, B.Q.Chen, J.Dobaczewski, H.Flocard, B.Gall, P.H.Heenen, J.Meyer, N.Tajima, M.S.Weiss

Microscopic Approach to Collective Motion

NUCLEAR STRUCTURE ¹⁹²Hg, ¹⁹⁴Pb; calculated superdeformed bands, energies, quadrupole moments, dynamical, rigid body moments of inertia, Eγ. ^{194,196,198,200,202,204,206,208,210,212,214,216,218,220}Pb; calculated proton, neutron rms radii. Microscopic approach, collective motion.

doi: 10.1016/0375-9474(94)90045-0
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1994TA06      Nucl.Phys. A572, 365 (1994)

N.Tajima

Roles of Triaxiality and Residual Interaction in Signature Inversions of A ≈ 130 Odd-Odd Nuclei

NUCLEAR STRUCTURE ¹²⁴Cs; calculated levels, B(λ). ^120,126,128Cs, ^{124,126,128,130,132}La, ¹³⁴Pr, ¹³⁶Pm; calculated levels; deduced triaxiality, residual interactions roles in signature inversion, rotational bands.

doi: 10.1016/0375-9474(94)90180-5
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1994TA17      Phys.Lett. 331B, 261 (1994)

S.Takahara, N.Onishi, N.Tajima

Pairing Correlation in Nuclear Matter from Skyrme Force

doi: 10.1016/0370-2693(94)91048-0
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1993TA01      Nucl.Phys. A551, 409 (1993)

N.Tajima, H.Flocard, P.Bonche, J.Dobaczewski, P.-H.Heenen

Diabatic Effects in ¹⁸⁶Pb: A generator-coordinate analysis

NUCLEAR STRUCTURE ¹⁸⁶Pb; calculated pairing gaps, potential energy curves vs mass quadrupole moment. Hartree-Fock+BCS basis, generator coordinate method.

doi: 10.1016/0375-9474(93)90455-7
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1993TA02      Nucl.Phys. A551, 434 (1993)

N.Tajima, P.Bonche, H.Flocard, P.-H.Heenen, M.S.Weiss

Self-Consistent Calculation of Charge Radii of Pb Isotopes

NUCLEAR STRUCTURE ^{194,202,214,220}Pb; calculated charge radii. Hartree-Fock+BCS method, Skyrme forces.

doi: 10.1016/0375-9474(93)90456-8
Citations: PlumX Metrics

1990TA30      Nucl.Phys. A520, 317c (1990)

N.Tajima

Is the Signature Inversion of Energy Levels Due to the γ-Degree of Freedom ( Question )

NUCLEAR STRUCTURE ¹⁵⁷Ho; calculated level signature splitting; deduced intruder orbital particles moment of inertia features.

doi: 10.1016/0375-9474(90)91156-L
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1989TA06      Nucl.Phys. A491, 179 (1989)

N.Tajima, N.Onishi

K-Isomerism and γ-Softness

NUCLEAR STRUCTURE ¹⁸⁴Os, ¹⁸²W; calculated isomer decay T_1/2, B(λ). Particle plus γ-soft rotor model.

doi: 10.1016/0375-9474(89)90698-2
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1986TA15      Phys.Lett. 179B, 187 (1986)

N.Tajima, N.Onishi

The Unusual High-Spin Isomer in ¹⁸²Os and the Proton-Neutron Ineraction in High-j Orbitals

NUCLEAR STRUCTURE ¹⁸²Os; analyzed isomer decay characteristics; deduced isomer two-proton-two-neutron bandhead feature. Particle plus γ-soft rotor model.

doi: 10.1016/0370-2693(86)90563-0
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