TAJIMA Naoki

FacultyApplied Physics
Teacher OrganizationApplied Physics
Education and
 Research Organization
Faculty of Engineering /Graduate School of Engineering
PositionProfessor
Last Updated: 19/07/23 18:52

Researcher Profile & Settings

Name

    TAJIMA Naoki

Research Areas

  • Mathematical / Physics / almost numerical error free formula for rotation matrixrotation matrix,numerical error /  Individual 2013
  • Mathematical / Physics / origin of prolate-shape dominance of atomic nucleusprolate shape, oblate shape, spin-orbit potential, pseudo-spin symmetry /  Collaboration in Japan
  • Mathematical / Physics / canonical-basis Hartree-Fock-Bogoliubov metthod in coordinate spacecanonical-basis Hartree-Fock-Bogoliubov method,continuum state,nuclear deformation

Affiliation

  •  Applied Physics Professor

Education

  • Apr. 1986Mar. 1989The University of Tokyo Science 物理学
  • Apr. 1980Mar. 1984The University of Tokyo Science Physics

Academic & Professional Experience

  • Apr. 19891989-1998 University of Tokyo, Assistant 1998-2018 Fukui University, Associate Professor , 2018- The University of Fukui , Professor Faculty of Engineering, Department of Applied Physics

Overseas travel history

  • 米国 Rutgers Universiry Mar.  2018- Mar. 2018
  • 米国 Institute for Nuclear Theory, University of Washington Nov.  2005- Nov. 2005
  • 米国 Oak Ridge national laboratory Sep.  2004- Sep. 2004
  • 米国 Oak Ridge National Laboratory Aug.  2003- Sep. 2003
  • イタリア European Center for Theoretical Studies in Nuclear Physics and Related Areas Jun.  2002- Jun. 2002
  • 米国 Institute for Nuclear Theory, University of Washington Oct.  2000- Nov. 2000
  • 米国 Institute for Nuclear Theory, University of Washington Oct.  1995- Oct. 1995
  • 米国 Clark Kerr Campus, University of California Aug.  1994- Aug. 1994
  • フランス Division de Physique Theorique, Institute de Physique Nucleair Apr.  1992- Aug. 1992
  • フランス Service de Physique Theorique, CE, Saclay, CEA Oct.  1991- Mar. 1992
  • フランス Division de Physique Theorique, Institute de Physique Nucleair Sep.  1990- Sep. 1991
  • 米国 Oak Ridge national laboratory Apr.  1990- May 1990

Research Activities

Published Papers

  • some thoughts on activities in the Hokuriku branch
    Naoki Tajima
    bulletin of the physical society of japan 73(1) 51-51 Jan.  2018 Not refereed
  • Analytical formula for numerical evaluations of the Wigner rotation matrices at high spins
    N. Tajima
    Phys. Rev. C. 91(1) 014320-1 - 014320-5 Jan.  2015 Refereed
  • Angular correlation between proton and neutron rotors
    N. Tajima
    Journal of Physics:Conference Series 445(1) 012014_1-012014_6 Jul.  2013 Refereed
  • Nuclear prolate-shape dominance with the Woods-Saxon potential
    Satoshi Takahara, Naoki Tajima, Yoshifumi R. Shimizu
    Phys. Rev. C 86(6) 064323-1-064323-13 Dec.  2012 Refereed
  • Meaning of antiparallel proton and neutron angular momenta at low spins
    N. Tajima, T. Otsuka
    Phys. Rev. C. 84(6) 064316-1 - 064316-8 Dec.  2011 Refereed
  • The role of spin-orbit potential in nuclear prolate-shape dominance
    S. Takahara, N. Onishi, Y. R. Shimizu, N. Tajima
    Phys. Lett. B 702(5) 429-432 Aug.  2011 Refereed
  • Improved microscopic-macroscopic approach incorporating the effects of continuum states
    Naoki Tajima, Yoshifumi R. Shimizu, Satoshi Takahara
     82(3) 034316,1-28 Sep.  2010 Refereed
  • Method to circumvent the neutron gas problem in the BCS treatment for nuclei far from stability
    Toshiya Ono, Yoshifumi R. Shimizu, Naoki Tajima, Satoshi Takahara
     82(3) 034310,1-11 Sep.  2010 Refereed
  • Canonical-basis HFB method
    N. Tajima
    Soryushiron Kenkyu 112(2) B36-B38 Nov.  2005 Not refereed
  • Continuum effects on the pairing in neutron drip-line nuclei studied with the canonical-basis HFB method
    N. Tajima
    The European Physical Journal A 25(supplement 1) 571-572 Sep.  2005 Refereed
  • Nodal lines in the cranked HFB overlap kernels
    N.Tajima, N. Tajima
    Phys. Lett. B606(42006) 43-51 Jan.  2005 Refereed
  • Canonical-basis solution of the Hartree-Fock-Bogoliubov equation on three-dimensional Cartesian mesh
    N. Tajima
     69(3) 034305,1-22 Mar.  2004 Refereed
  • Origin of prolate dominance of nuclear deformation
    N.Tajima, Y.R.Shimizu, N.Suzuki
    (146) 628-629 Dec.  2002
  • Prolate dominance of nuclear shape caused by a strong interference between the effects of spin-orbit and l2 terms of the Nilsson potential
    N.Tajima, N.Suzuki
     64(3) 037301_1-037301_4 Sep.  2001 Refereed
  • Hartree-Fock+BCS approach to unstable nuclei with the Skyrme force
    N. Tajima
    (142) 265-296 Sep.  2001 Not refereed
  • Cut-off schemes for zero-range pairing interactions in canonical-basis Hartree-Fock-Bogoliubov method
    N.Tajima
     Nov.  1999 Not refereed
  • Pairing correlation involving the continuum states
    N.Tajima
     Jul.  1999
  • Study of Superdeformation in Non-rotating States using the Skyrme-Hartree-Fock Method
    S.Takahara, N.Tajima, N.Onishi
     1998 Refereed
  • Signature and angular momentum in 3d-cranked HFB states
    M.Oi, N.Onishi, N.Tajima, T.Horibata
     1998 Refereed
  • Hartree-Fock-Bogoliubov for deformed neutron-rich nuclei
    N.Tajima
     1998
  • Reaction cross Sections and radii of A=17 and A=20 isobars
    H. Kitagawa, N. Tajima, H. Sagawa
    Zeitschrift fur Physik A A358(4) 381-387 Sep.  1997 Refereed
  • Extensive Hartree-Fock+BCS calculation with Skyrme SIII force
    N. Tajima, S. Takahara, N. Onishi
    Nuclear Physics A603(1) 23-49 Jun.  1996 Refereed
  • Deformed Hartree-Fock Calculation of Proton-Rich Nuclei (共著)
    N.Tajima
     588 215C 1995
  • Roles of triaxiality and residual interaction in signature inversions of A~130odd-odd nuclei
    N.Tajima
     572 365 1994
  • Pairing correlation in nuclear matter from Skyrme force (共著)
    N.Tajima
     331 261 1994
  • Microscopic approach to collective motion (共著)
    N.Tajima
     574 185C 1994
  • Generator coodinate kernels between zero-and two-quasiparticle BCS states (共著)
    N.Tajima
     A542 355 1992
  • Seeing the nuclear shape using K-isomers
    N.Tajima
     45 916 1990
  • Is the signature inversion of energy levels due to the γ-degree of freedom?
    N.Tajima
     A520 317C 1990
  • K-isomerism and γ-softness (共著)
    N.Tajima
     A491 179 1989
  • An interpretation of Signature Inversion (共著)
    N.Tajima
     80 130 1988
  • The unusual high-spin isomer in 182Os and the proton-neutron interaction in high-j orbitals (共著)
    N.Tajima
     179 187 1986
  • 28aSP-1 Robust method to obtain self-consistent solutions of HFB equation for odd nuclei
    Tajima N.;Sugiura T.
     70(2) Sep.  2015
  • 21pAB-4 On the equidistant level series found in neutron resonance spectra
    Tajima N.;Kusama K.
     71(1) Mar.  2016

Books etc

  • Diabatic effects and shape coexistence in neutron defficient Pb isotopes" in Nuclear Shapes and Nuclear Structure at Low Excitation Energy (共著)"
    N.Tajima
     1992
  • The Hartree-Fock+BCS and Generator Coordinate Methods" in Nuclear Strecture Models (共著)"
    N.Tajima
     1992

Conference Activities & Talks

  • Comparison of neutron resonance and GOE spectra on the probability of the occurrence of various types of regular sequences
    Hijiri Futamura, Naoki Tajima
    74th annual meeting of the physical society of Japan Mar.  2019 Physical Society of Japan
  • Search for cubic series in neutron resonance spectrum and comparison with the result for GOE
    Hijiri Futamura, Naoki Tajima
    Annual Meeting of the Hokuriku Branch of the Physical Society of Japan Nov.  2018 The Hokuriku Branch of the Physical Society of Japan
  • Search for regular series in neutron resonance spectrum and comparison with the result for GOE
    Hijiri Futamura, Honoka Yuguchi, and Naoki Tajima
    73rd Annual Meeting of the Physical Society of Japan Mar.  2018 Physical Society of Japan
  • contribution of the macroscopic part of the Strutinsky method in prolate-shape dominance of the nuclear deformation 2
    Satoshi Takahara(Speaker),Naoki Tajima, Yoshifumi R. Shimizu
    the 69th annual meeting of the physical society of Japan Mar.  2014 The Physical Society of Japan
  • Configurations of odd and odd-odd nuclei with mean-field models
    K.Ito, T.Sugiura, N.Tajima
    the 69th annual meeting of the physical society of Japan Mar.  2014 physical society of Japan
  • Methods to evaluate spatial resolution of one-body wavefunctions expanded in basis of finite dimension
    Naoki Tajima
    Fall meeting of the Physical Society of Japan, 2017 Sep.  2017 Physical Society of Japan
  • Mechanism for frequent appearance of equi-distance sequences in the Gaussian orthogonal random matrix spectrum
    N. Tajima
    72nd Annual Meeting of the Physical Society of Japan Mar.  2017 The Physical Society of Japan
  • Probability of occurrence of equidistance sequences in the spectra of Gaussian orthogonal random matrices
    N. Tajima
    2016 annual meeting of the Hokuriku branch of the Physical Society of Japan Nov.  2016 Hokuriku branch of the Physical Society of Japan
  • On the equidistant level series found in neutron resonance spectra
    N. Tajima, K. Kusama
    71st Annual Meeting of the Physical Society of Japan Mar.  2016 The Physical Society of Japan
  • Robust method to obtain self-consistent solutions of HFB equation for odd nuclei
    N. Tajima, T. Sugiura
    2015 Autumn Meeting of the Physical Society of Japan Sep.  2015 The Physical Society of Japan
  • Almost exact numerical evaluation formula of the rotation matrix and the release of an improved program
    N. Tajima
    70th Annual Meeting of the Physical Society of Japan Mar.  2015 The Physical Society of Japan
  • Theoretical predictions of high-spin nuclear isomers
    Kento Ito, Naoki Tajima
    2014 Annual Meeting of the Hokuriku Branch of the Physical Society of Japan Dec.  2014 Hokuriku Branch of the Physical Society of Japan
  • Self-consistent solutions of the Hartree-Fock-Bogoliubov equation for systems of odd number of particles
    Tomoaki Sugiura, Naoki Tajima
    2014 Annual meeting of the Hokuriku Branch of the Physical Society of Japan Dec.  2014 Hokuriku Branch of the Physical Society of Japan
  • Contribution of the macroscopic part of the Strutinsky method to the prolate-shape dominance of atomic nuclei II
    S.Takahara, N.Tajima, Y.R.Shimizu
    69th annual meeting of the Physical Society of Japan Mar.  2014
  • Configurations of odd and odd-odd nuclei with mean-field models
    Kento Ito, Tomoaki Sugiura, Naoki Tajima
    69th annual meeting of the Physical Society of Japan Mar.  2014
  • Avoidance of the serious loss of significance in numerical evaluations of the rotation matrix at high spins
    Naoki Tajima
    autumn meeting in 2013 of the Physical Society of Japan Sep.  2013
  • Contribution of the macroscopic part of the Strutinsky method to the prolate-shape dominance of atomic nuclei
    S.Takahara, N.Tajima, Y.R.Shimizu
    68th annual meeting of the Physical Society of Japan Mar.  2013
  • Skyrme-force-type pairing interaction II
    Naoki Tajima
    autumn meeting in 2012 of the Physical Society of Japan Sep.  2012
  • Skyrme-force-type pairing interaction
    Naoki Tajima
    annual meeting in 2012 of the Physical Society of Japan Mar.  2012
  • Angular correlation between proton and neutron rotors
    N. Tajima
    International Symposium on Exotic Nuclear Structure From Nucleons Jan.  2012
  • Angular correlation in an angular-momentum-projected two-rotor system
    Naoki Tajima
    fall meeting in 2011 of the Physical Society of Japan Sep.  2011
  • Strutinsky method and Kruppa prescription
    Naoki Tajima, Yoshifumi R. Shimizu, Satoshi Takahara
    65th annual meeting of the Physical Society of Japan Mar.  2010
  • Study of unstable nuclei by Kruppa prescription including effects of continuum states
    Toshiya Ono, Yoshifumi R. Shimizu, Naoki Tajima, Satoshi Takahara
    65th annual meeting of the Physical Society of Japan Mar.  2010
  • Roles of spin-orbit forces in prolate-shape dominance
    Satoshi Takahara, Yoshifumi R. Shimizu, Naoki Onishi, Naoki Tajima
    65th annual meeting of the Physical Society of Japan Mar.  2010
  • Phase problem in 3-dimensional angular momentum projections for HFB states
    Makito Oi, Takahiro Mizusaki, Naoki Onishi, Naoki Tajima
    65th annual meeting of the Physical Society of Japan Mar.  2010
  • New Woods-Saxon Strutinsky method for calculations of the nuclear chart
    Naoki Tajima, Yoshifumi R. Shimizu, Satoshi Takahara, Naoki Onishi
    Nuclear Data in Japan - Nuclear energy of the heaven and the earth Jul.  2009
  • Nuclear mass formula based on the relativistic mean-field model and an approximate treatment of deformation a la KUTY formula
    Shohei Yamada, Naoki Tajima
    64th annual meeting of the Physical Society of Japan Mar.  2009
  • Development of a canonical-basis HFB program with the spin-orbit interaction
    N. Tajima
    63rd annual meeting of the Physical Society of Japan Mar.  2008
  • Treatment of continuum in Woods-Saxon Strutinsky method II
    S.Takahara, N.Tajima, Y.R.Shimizu
    63rd annual meeting of the Physical Society of Japan Mar.  2008
  • Pairing anti-halo effect of pairing correlation and nuclear deformation II
    N. Tajima
    62nd annual meeting of the Physical Society of Japan Sep.  2007
  • Treatment of continuum in Woods-Saxon Strutinsky method
    S.Takahara, N.Tajima, Y.R.Shimizu
    62nd annual meeting of the Physical Society of Japan Sep.  2007
  • Woods-Saxon Strutinsky法における連続状態の扱い
    S. Takahara, Y.R. Shimizu, N. Tajima
    International Nuclear Physics Conference Jun.  2007
  • Pairing anti-halo effect of pairing correlation and nuclear deformation
    N. Tajima
    Spring meeting of the Physical Society of Japan Mar.  2007
  • origin of prolate dominance of nuclear deformation -analysis in terms of Woods-Saxon potential II-
    S.Takahara, N.Tajima, Y.R.Shimizu
    autumn meeting of the Physical Society of Japan, 2006 Sep.  2006
  • neutron drip line and beyond in terms of the canonical basis HFB method
    N.Tajima
    61st annual meeting of the Physical Society of Japan Mar.  2006
  • origin of prolate dominance of nuclear deformation -analysis in terms of Woods-Saxon potential-
    S.Takahara, N.Tajima, Y.R.Shimizu
    61th annual meeting of the Physical Society of Japan Mar.  2006
  • Canonical Basis HFB method - drip lines and beyond -
    N.Tajima
    Nuclear Structure Near the Limits of Stability (INT-05-3) Nov.  2005
  • Toward a model for a universal description of the nuclear pairing
    N.Tajima
    RIKEN RIBF international workshop on Collective motions in unstable nuclei -experiments vs. theories- May  2005
  • Approximate localized HFB solution of nuclei beyond the neutron drip line
    N.Tajima
    60th annual meeting of the Physical Society of Japan Mar.  2005
  • Approximate localized HFB solution of nuclei beyond the neutron drip line
    N.Tajima
    KEK nuclear theory workshop Donshu"" Mar.  2005
  • Continuum effects on the pairing in neutron drip-line nuclei studied with the canonical-basis HFB method
    N.Tajima
    RIBF nuclear physics work shop on meanfield and collective motion of unstable atomic nuclei Sep.  2004
  • Pairing with Skyrme forces in asymmetric nuclear matter
    N.Tajima, Y. Kitajima
    US-Japan collaboration workshop on Mean-field Approach to Collective Excitations in Unstable Medium-Mass and Heavy Nuclei Sep.  2004
  • application of the canonical basis HFB method to neutron rich deformed nuclei
    N.Tajima
    59th annual meeting of the Physical Society of Japan Mar.  2004
  • Canonical-basis Hartree-Fock-Bogoliubov method with a Skyrme-type pairing force
    N.Tajima
     Dec.  2003
  • Cartesian-mesh canonical-basis Skyrme-HFB
    N.Tajima
     Aug.  2003
  • Canonical-basis Hartree-Fock-Bogoliubov method with a Skyrme-type pairing force
    田嶋 直樹
     Mar.  2003
  • Canonical basis solution of HFB with Skyrme-type pairing force
    N.Tajima
     Dec.  2002
  • Skyrme型対相関力を用いた正準基底HFB法
    田嶋 直樹
     Sep.  2002
  • Canonical basis solution of HFB to include pairing in the continuum
    N.Tajima
     Jun.  2002
  • 核変形の偏長・扁平と対相関
    田嶋 直樹, 清水 良文
     Mar.  2002
  • Skyrme力による非対称核物質の対相関
    北嶋 靖, 田嶋 直樹
     Mar.  2001
  • 座標空間HFB法による中性子過剰核の対相関
    田嶋 直樹
     Mar.  2001
  • Origin of the prolate dominance of nuclear shape
    田嶋 直樹, 鈴木 紀史
     Feb.  2001
  • Pairing with Skyrme forces in asymmetric nuclear matter
    田嶋 直樹, 北嶋 靖
     Feb.  2001
  • Why are there much more prolate nuclei than oblate ones ?
    N.Tajima, N.Suzuki
     Nov.  2000
  • ニルソン模型でみる原子核の偏長変形優勢の起源
    田嶋 直樹, 鈴木 紀史
     Sep.  2000
  • Caconical Basis HFB on 3D mesh for pairing correlation in neutron-rich nuclei
    N.Tajima
     Jan.  2000
  • 連続状態の対相関とカットオフ
    田嶋 直樹
     Mar.  1999
  • 座標表示HFB方程式の正準基底での解法
    田嶋 直樹
     Mar.  1998
  • Angular momentum projected GCM
    大井 万紀人, 大西 直毅, 田嶋 直樹, 堀端 孝俊
     Mar.  1998
  • 中性子過剰核での対相関
    田嶋 直樹
     Jan.  1998