Kazumasa Okada

Last Updated :2021/02/02

Affiliations, Positions
Graduate School of Advanced Science and Engineering, Associate Professor
E-mail
okadakhiroshima-u.ac.jp
Self-introduction
A researcher on the spectroscopy and photochemistry in the soft X-ray region.

Basic Information

Academic Degrees

  • Doctor of Science, Hiroshima University
  • Master of Science, Hiroshima University

Educational Activity

  • 【Bachelor Degree Program】School of Science : Chemistry
  • 【Master's Program】Graduate School of Advanced Science and Engineering : Division of Advanced Science and Engineering : Basic Chemistry Program
  • 【Doctoral Program】Graduate School of Advanced Science and Engineering : Division of Advanced Science and Engineering : Basic Chemistry Program

Research Fields

  • Chemistry;Basic chemistry;Physical chemistry

Research Keywords

  • Reaction Dynamics
  • Soft X-Ray Photochemistry
  • Elementary Reaction
  • Molecular Spectroscopy

Educational Activity

Course in Charge

  1. 2020, Liberal Arts Education Program1, Intensive, Introduction to Science
  2. 2020, Undergraduate Education, First Semester, Exercises in Chemistry
  3. 2020, Undergraduate Education, 2Term, Physical Chemistry IB
  4. 2020, Undergraduate Education, First Semester, Special Study for Graduation
  5. 2020, Undergraduate Education, Second Semester, Special Study for Graduation
  6. 2020, Undergraduate Education, First Semester, Chemical Experiments I
  7. 2020, Undergraduate Education, Second Semester, Chemical Experiments II
  8. 2020, Graduate Education (Master's Program) , First Semester, Seminar in Chemical
  9. 2020, Graduate Education (Master's Program) , Second Semester, Seminar in Chemical
  10. 2020, Graduate Education (Master's Program) , Second Semester, Advanced molecular science
  11. 2020, Graduate Education (Master's Program) , First Semester, Quantum Chemistry (Seminar)
  12. 2020, Graduate Education (Master's Program) , Second Semester, Quantum Chemistry (Seminar)
  13. 2020, Graduate Education (Doctoral Program) , First Semester, Seminar in Chemical
  14. 2020, Graduate Education (Doctoral Program) , Second Semester, Seminar in Chemical
  15. 2020, Graduate Education (Doctoral Program) , First Semester, Quantum Chemistry (Seminar)
  16. 2020, Graduate Education (Doctoral Program) , Second Semester, Quantum Chemistry (Seminar)
  17. 2020, Graduate Education (Master's Program) , 3Term, Quantum Chemistry
  18. 2020, Graduate Education (Master's Program) , 3Term, Special Lectures in Chemistry A (Advanced molecular science)
  19. 2020, Graduate Education (Master's Program) , 2Term, Exercises in Chemistry A
  20. 2020, Graduate Education (Master's Program) , 4Term, Exercises in Chemistry B
  21. 2020, Graduate Education (Master's Program) , Academic Year, Master's Thesis in Chemistry
  22. 2020, Graduate Education (Doctoral Program) , Academic Year, Doctoral Thesis in Chemistry

Research Activities

Academic Papers

  1. ★, Hydration structure of trimethylamine N-oxide in aqueous solutions revealed by soft X-ray emission spectroscopy and chemometric analysis, PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 18(39), 27648-27653, 20161021
  2. ★, Specific fragmentation of the K-shell excited/ionized aniline molecule studied by electron impact, INTERNATIONAL JOURNAL OF MASS SPECTROMETRY, 351, 56-60, 20131001
  3. ★, Photofragmentation of the K-shell excited perfluorocyclobutane: anisotropies in the fragments and breakdown pathways, JOURNAL OF MASS SPECTROMETRY, 46(7), 635-639, 201107
  4. Photofragmentation of the K-shell excited perfluorocyclobutane: Anisotropies in the fragments and breakdown pathways, Journal of Mass Spectrometry, 46(7), 635-639, 20110701
  5. Effect of fluoro substitution on the fragmentation of the K-shell excited/ionized pyridine studied by electron impact, Journal of Mass Spectrometry, 46(7), 666-671, 20110701
  6. Effect of fluoro substitution on the fragmentation of the K-shell excited/ionized pyridine studied by electron impact, JOURNAL OF MASS SPECTROMETRY, 46(7), 666-671, 201107
  7. Photodissociation investigation of doubly charged ethanol clusters induced by inner-shell electron ionization, JOURNAL OF CHEMICAL PHYSICS, 134(20), 20110528
  8. Photodissociation investigation of doubly charged ethanol clusters induced by inner-shell electron ionization, The Journal of Chemical Physics, 134(20), 204302-1-204302-9, 20110501
  9. Core-electron excitation and fragmentation processes of hydrogen bonded acetic-acid clusters in the oxygen K-edge region, Journal of Electron Spectroscopy and Related Phenomena, 184(3-6), 134-139, 20110401
  10. Core-electron excitation and fragmentation processes of hydrogen bonded acetic-acid clusters in the oxygen K-edge region, JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA, 184(3-6), 134-139, 201104
  11. Specific fragmentation of the K-shell excited/ionized pyridine derivatives studied by electron impact: 2-, 3-and 4-methylpyridine, JOURNAL OF MASS SPECTROMETRY, 45(3), 306-312, 201003
  12. Specific fragmentation of the K-shell excited/ionized pyridine derivatives studied by electron impact: 2-, 3- and 4-Methylpyridine, J. Mass Spectrom., 45(3), 306, 20100201
  13. Hydrogen bonding in acetone clusters probed by near-edge x-ray absorption fine structure spectroscopy in the carbon and oxygen K-edge regions, JOURNAL OF CHEMICAL PHYSICS, 131(17), 20091107
  14. Hydrogen bonding in acetone clusters probed by near-edge x-ray absorption fine structure spectroscopy in the carbon and oxygen K-edge regions, J. Chem. Phys., 131(17), 174311, 20091101
  15. Specific Fragmentation of K-Shell Excited/Ionized Pyridine Derivatives Studied by Electron Impact: 2-Amino-3-methylpyridine and 3-Methylpyridine, BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN, 81(12), 1580-1583, 20081215
  16. Specific fragmentation of [(CH3)(2)CO]Ar-n heteroclusters induced by the Ar L-23- and O K-shell excitation, CHEMICAL PHYSICS LETTERS, 462(1-3), 40-44, 20080901
  17. Hydrogen bonding in methanol clusters probed by inner-shell photoabsorption spectroscopy in the carbon and oxygen K-edge regions, Journal of Chemical Physics, 128(12), 20080331
  18. Hydrogen bonding in methanol clusters probed by inner-shell photoabsorption spectroscopy in the carbon and oxygen K-edge regions, JOURNAL OF CHEMICAL PHYSICS, 128(12), 20080328
  19. Absolute photoionization cross sections with ultra-high energy resolution for Ar, Kr, Xe and N-2 in inner-shell ionization regions, JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA, 160(1-3), 39-48, 200708
  20. Electron-ion-ion triple coincidence spectroscopic study of site-specific fragmentation caused by Si:2p core-level photoionization of F3SiCH2CH2Si(CH3)3 vapor, Physical Review A, 75, 020502(R)/4, 20070201
  21. Electron-ion-ion triple-coincidence spectroscopic study of site-specific fragmentation caused by Si : 2p core-level photoionization of F3SiCH2CH2Si(CH3)(3) vapor, PHYSICAL REVIEW A, 75(2), 200702
  22. Doppler effect in resonant excitation of CF3SF5 probed by Auger electron spectroscopy, JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA, 154(3), 53-59, 200702
  23. Absolute photoionization cross section with an ultra-high energy resolution for Ne in the region of 1s Rydberg states, Synchrotron Radiation Instrumentation: Ninth Int. Conf. Synchrotron Rad. Instrum., 879, 1121-1124, 20070119
  24. Formation of H3O+ by the soft X-ray ionization of ethanol clusters, Chem. Phys. Lett., 433(1-3), 43-47, 20061201
  25. Formation of multi-charged Kr ions through photoionization of 2p electrons studied with a coincidence technique, RADIATION PHYSICS AND CHEMISTRY, 75(11), 1778-1783, 200611
  26. On the ionization energy of CF3SF5 in the valence region measured by angle-resolved photoelectron spectroscopy, JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA, 152(1-2), 96-99, 200606
  27. High-resolution absolute photoabsorption cross sections for Ne in the 1s2s and 1s2p resonant double excitation, Journal of Physics B: At. Mol. Opt. Phys., 39(8), 2059-2069, 20060428
  28. High-resolution absolute photoabsorption cross sections for Ne in the 1s2s and 1s2p resonant double excitation, JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 39(8), 2059-2069, 20060428
  29. Formation mechanisms of multi-charged Kr ions through 2p shell photoionization using a coincidence technique, 39(6), 1323-1335, 20060401
  30. Formation mechanisms of multi-charged Kr ions through 2p shell photoionization using a coincidence technique, JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 39(6), 1323-1335, 20060328
  31. Site-specific fragmentation caused by core-level photoexcitation: Comparison between Si : 1s and 2p photoexcitations in F3SiCH2CH2Si(CH3)(3) vapor, INTERNATIONAL JOURNAL OF MASS SPECTROMETRY, 247(1-3), 101-105, 20051201
  32. Shake-off of loosely bound electrons in Auger decays of Kr 2p core hole statesY., Physical Review A, 72(4), 044702/4, 20051027
  33. Shake-off of loosely bound electrons in Auger decays of Kr 2p core hole states, PHYSICAL REVIEW A, 72(4), 200510
  34. Interference effects in Auger resonant Raman spectra of CO via selective vibrational excitations across the O 1s -> 2 pi resonance, PHYSICAL REVIEW A, 72(2), 200508
  35. Photofragmentation of C, F and SK-shell excited CF3SF5 studied by PEPICO and PIPICO spectroscopy, CHEMICAL PHYSICS, 314(1-3), 119-126, 20050718
  36. Vibrational Effect on the Fragmentation Dynamics of the C K-shell Excited CF2CH2, Journal of Electron Spectroscopy and Related Phenomena, 144-147, 187-189, 20050601
  37. Vibrational effect on the fragmentation dynamics of the CK-shell excited CF2CH2, JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA, 144, 187-189, 200506
  38. High-resolution resonant Auger spectroscopy of CF4, SiF4, and SF6, JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA, 144, 199-202, 200506
  39. Inner-shell Excitation of Ethanol Cluster at O K-edge, Journal of Electron Spectroscopy and Related Phenomena, 144-147, 235-238, 20050601
  40. Inner-shell excitation of ethanol cluster at OK-edge, JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA, 144, 235-238, 200506
  41. Energy relaxation through the pi(*)-state in C, F and O K-shell excited CF3COCH3, JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA, 143(1), 21-27, 200504
  42. Variation in resonant Auger yields into the (1)G4 center dot nl states of Kr across the L-3 threshold, JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 38(4), 421-431, 20050228
  43. Experimental and theoretical study of resonant Auger decay of core-excited NO${}_2$, Chemical Physics Letters, 399(4-6), 426-432, 20041201
  44. Deformation, nuclear motion and fragmentation of core-excited CO${}_2$ probed by multiple-ion coincidence momentum imaging, Journal of Electron Spectroscopy and Related Phenomena, 141(2-3), 183-193, 20041201
  45. Angle-resolved, mass-selected ion spectroscopy of carbon K-shell excited CF${}_3$CCH, Chemical Physics, 304(3), 273-279, 20041001
  46. Total photoabsorption cross-sections of CF3SF5 in the C, F and S K-shell regions, Chemical Physics Letters, 392(4-6), 303-308, 20040711
  47. Satellite excitations due to internal inelastic scattering in the K-shell photoemission from CO${}_2$, Journal of Electron Spectroscopy and Related Phenomena, 137-140, 265-269, 20040701
  48. Mass-selected ion spectroscopy of K-shell excited polyatomic molecules: Fragmentation competing with intramolecular energy relaxation, Recent Research Developments in Chemical Physics, 5(1), 77-97, 20040401
  49. Asymmetric peaks of photoelectrons and Auger electrons formed through post-collision interaction following Kr 2p${}_{3/2}$ hole creation, Journal of Physics, B37(7), 1433-1441, 20040301
  50. Probe of bending motion following the 1s${}^{-1}$$pi^*$ excitation of N${}_2$O, Journal of Chemical Physics, 120(8), 3635-3641, 20040201
  51. Asymmetric nuclear motion of the F 1s-ionized state in BF${}_3$ probed by quadruple-ion-coincidence momentum imaging, Physical Review, A69(2), 022506, 20040201
  52. Branching ratios of multiply charged ions formed through photoionization of Kr 3d, 3p and 3s sub-shells using a coincidence technique, Journal of Physics, B37(1), 117-129, 20040101
  53. Branching ratios of multiply charged ions formed through photoionization of Kr 3d, 3p and 3s sub-shells using a coincidence technique, JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 37(1), 117-129, 20040114
  54. Probe of bending motion following the 1s(-1)pi(*) excitation of N2O, JOURNAL OF CHEMICAL PHYSICS, 120(8), 3635-3641, 20040222
  55. Asymmetric peaks of photoelectrons and Auger electrons formed through post-collision interaction following Kr 2p(3/2) hole creation, JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 37(7), 1433-1441, 20040414
  56. Satellite excitations due to internal inelastic scattering in the K-shell photoemission from CO2, JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA, 137, 265-269, 200407
  57. Total photoabsorption cross-sections of CF3SF5 in the C, F and SK-shell regions, CHEMICAL PHYSICS LETTERS, 392(4-6), 303-308, 20040711
  58. Angle-resolved, mass-selected ion spectroscopy of carbon K-shell excited CF3CCH, CHEMICAL PHYSICS, 304(3), 273-279, 20041004
  59. Experimental and theoretical study of resonant Auger decay of core-excited NO2, CHEMICAL PHYSICS LETTERS, 399(4-6), 426-432, 20041201
  60. Deformation, nuclear motion and fragmentation of core-excited CO2 probed by multiple-ion coincidence momentum imaging, JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA, 141(2-3), 183-193, 200412
  61. Doppler effect in resonant photoemission from SF${}_6$: Correlation between Doppler profile and Auger emission anisotropy, Physical Review Letters, 91(21), 213003, 20031101
  62. Probing doubly excited ionic states of N${}_2^+$ via a triple excitation above the N 1s threshold in the N${}_2$ molecule, Physical Review, A67(3), 032504/1-032504/4, 20030301
  63. Nuclear motion and symmetry breaking of the B 1s-excited BF${}_3$ molecule, Chemical Physics, 289(1), 135-147, 20030401
  64. Anisotropic ultrafast dissociation probed by the Doppler effect in resonant photoemission from CF${}_4$, Physical Review Letters, 90(23), 233006/1-233006/4, 20030601
  65. Molecular size effect on the site dependent photofragmentation of N and O K-shell excited CH${}_3$CO(CH${}_2$)${}_n$CN (n = 0-3), The Journal of Physical Chemistry, A107(41), 8444-8448, 20031001
  66. Nuclear motion and symmetry breaking of the B 1s-excited BF3 molecule, CHEMICAL PHYSICS, 289(1), 135-147, 20030401
  67. Probing doubly excited ionic states of N-2(+) via a triple excitation above the N 1s threshold in the N-2 molecule, PHYSICAL REVIEW A, 67(3), 200303
  68. Anisotropic ultrafast dissociation probed by the Doppler effect in resonant photoemission from CF4, PHYSICAL REVIEW LETTERS, 90(23), 20030613
  69. Molecular size effect on the site dependent photofragmentation of N and O K-shell excited CH3CO(CH2)(n)CN (n=0-3), JOURNAL OF PHYSICAL CHEMISTRY A, 107(41), 8444-8448, 20031016
  70. Doppler effect in resonant photoemission from SF6: Correlation between doppler profile and auger emission anisotropy, PHYSICAL REVIEW LETTERS, 91(21), 20031121
  71. Vacuum ultraviolet absorption spectra of solid hydrogen halides, Surface Review and Letters, 9(2), 1351-1356, 20020401
  72. Symmetry breaking of a SiF${}_4$ molecule by F 1s excitation, Surface Review and Letters, 9(1), 89-92, 20020201
  73. Resonant Auger spectra of Kr near the $L_3$ threshold, Surface Review and Letters, 9(1), 85-88, 20020201
  74. Auger electron spectra of Kr2p holes using monochromatic soft X-rays, Surface Review and Letters, 9(1), 63-67, 20020201
  75. Resonant Auger Decay of Xe $3d^{-1}6p$ to Xe${}^+$ $4d^{-2}np$, Surface Review and Letters, 9(1), 51-55, 20020201
  76. Symmetry-resolved vibrational spectroscopy for the C1s${}^{-1}$2${\pi}_u$ Renner-Teller pair states in CO${}_2$, Physical Review Letters, 88(8), 083001/1-083001/5, 20020201
  77. Fragmentation competing with energy relaxation in core-excited CF${}_3$CN, Journal of Electron Spectroscopy and Related Phenomena, 123(2-3), 323-331, 20020501
  78. A study on multi-charged Xe ions formed through 3d hole states using a coincidence technique, Journal of Physics, B35(12), 2799-2809, 20020601
  79. Angle-resolved ion-yield measurements of CO${}_2$ in the O 1s to Rydberg excitation region, Physical Review, A66(3), 032503/1-032503/5, 20020901
  80. Symmetry-dependent multielectron excitations near the C 1s ionization threshold and distortion of the shape resonance in CO${}_2$, Physical Review Letters, 89(2), 023006/1-023006/4, 20020701
  81. Doppler interference in dissociative resonant photoemission, Physical Review, A66(2), 022509/1-022509/10, 20020801
  82. Fragmentation competing with energy relaxation in core-excited CF3CN, JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA, 123(2-3), 323-331, 200205
  83. Symmetry-dependent multielectron excitations near the C 1s ionization threshold and distortion of the shape resonance in CO2, PHYSICAL REVIEW LETTERS, 89(2), 20020708
  84. A study on multi-charged Xe ions formed through 3d hole states using a coincidence technique, JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 35(12), 2799-2809, 20020628
  85. Reinvestigation of base-induced skeletal conversion via a spirocyclic intermediate of dibenzodithiocinium derivatives and a computational study using the HF/6-31G*basis set, JOURNAL OF THE CHEMICAL SOCIETY-PERKIN TRANSACTIONS 1, 2704-2711, 2002
  86. Resonant auger decay of Xe 3d(-1)6p to Xe+4d(-2)np, SURFACE REVIEW AND LETTERS, 9(1), 51-55, 200202
  87. Auger electron spectra of Kr2p holes using monochromatic soft X-rays, SURFACE REVIEW AND LETTERS, 9(1), 63-67, 200202
  88. Resonant Auger spectra of Kr near the L-3 threshold, SURFACE REVIEW AND LETTERS, 9(1), 85-88, 200202
  89. Symmetry breaking of a SiF4 molecule by F 1s excitation, SURFACE REVIEW AND LETTERS, 9(1), 89-92, 200202
  90. Doppler interference in dissociative resonant photoemission, PHYSICAL REVIEW A, 66(2), 200208
  91. Vacuum ultraviolet absorption spectra of solid hydrogen halides, SURFACE REVIEW AND LETTERS, 9(2), 1351-1356, 200204
  92. Angle-resolved ion-yield measurements of CO2 in the O 1s to Rydberg excitation region, PHYSICAL REVIEW A, 66(3), 200209
  93. Sub-natural-width angle-resolved resonant Auger electron spectroscopy of atoms and molecules on the high resolution soft X-ray monochromator at SPring-8, Journal of Electron Spectroscopy and Related Phenomena, 114-116(1-3), 63-68, 20010301
  94. H${}_2^+$ formation from H${}_2$O${}^+$ mediated by the core-excitation-induced nuclear motion in H${}_2$O, Physical Review, A63(4), 042705-1-042705-5, 20010401
  95. H2+ formation from H2O+ mediated by the core-excitation-induced nuclear motion in H2O, Physical review A, 63(4), 42705-1-042705-5, 200104
  96. Monochromator for a soft X-ray photochemistry beamline BL27SU of SPring-8, Nuclear Instruments and Methods in Physics Research, A467-468(1), 533-536, 20010701
  97. High resolution measurement for the resonant Auger emission of Xe following 3d${}_{5/2}$ to 6p excitation, Journal of Physics, B34(11), L377-L382, 20010601
  98. Angle-resolved electron and ion spectroscopy apparatus on the soft X-ray photochemistry beamline BL27SU at SPring-8, Nuclear Instruments and Methods in Physics Research, A467-468(2), 1502-1504, 20010701
  99. Angle, energy and mass-resolved ion spectroscopy of core-excited polyatomic molecules, Nuclear Instruments and Methods in Physics Research, A467-468(2), 1505-1508, 20010701
  100. Assignment of the C K-shell photoabsorption spectrum of CF${}_3$CN molecule, Chemistry Letters, 2001(10), 1046-1047, 20011001
  101. Sub-natural-width angle-resolved resonant Auger electron spectroscopy of atoms and molecules on the high resolution soft X-ray monochromator at SPring-8, JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA, 114, 63-68, 200103
  102. Angle-resolved electron and ion spectroscopy apparatus on the soft X-ray photochemistry beamline BL27SU at SPring-8, NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 467, 1502-1504, 20010721
  103. Angle, energy and mass-resolved ion spectroscopy of core-excited polyatomic molecules, NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 467, 1505-1508, 20010721
  104. Monochromator for a soft X-ray photochemistry beamline BL27SU of SPring-8, NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 467, 533-536, 20010721
  105. Assignment of the CK-shell photoabsorption spectrum of CF3CN molecule, CHEMISTRY LETTERS, 1046-1047, 20011005
  106. Stereoselective formation of trans-2,5-disubstituted tetrahydropyrans by intramolecular nucleophilic substitution and a computational study at the AM1 level, BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN, 74(10), 1901-1907, 200110
  107. Initial decomposition process of energetic compound NTO, Proceedings of the 22nd International Symposium on Shock Waves, 123-128, 20000401
  108. Molecular size effect on the site-specific fragmentation of N and O K shell excited CH${}_3$OCOCN and CH${}_3$OCOCH${}_2$CN molecules, Journal of Electron Spectroscopy and Related Phenomena, 107(1), 39-47, 20000301
  109. High-resolution angle-resolved ion-yield measurements of H${}_2$O and D${}_2$O in the region of O 1s to Rydberg transitions, Chemical Physics Letters, 326(3-4), 314-320, 20000801
  110. Angle-resolved photofragmentation of the N K-shell excited CF${}_3$CN molecule, Chemical Physics Letters, 328(1-2), 147-152, 20000901
  111. Molecular deformation in the O $1s^{-1}2{\pi}_u$ excited states of CO${}_2$ probed by the triple-differential measurement of fragment ions, Physical Review, A62(4), 042503-1-042503-5, 20001001
  112. High resolution angle-resolved measurements of Auger emission from the photo-excited $1s^{-1}3p$ state of Ne, Journal of Physics, B33(20), L685-L689, 20001001
  113. Nuclear motion in the O $1s^{-1}2{\pi}_u$ core-excited states of CO${}_2$ probed by sub-natural-width resonant Auger emission spectroscopy, Chemical Physics Letters, 330(1-2), 91-96, 20001101
  114. Molecular size effect on the site-specific fragmentation of N and O K shell excited CH3OCOCN and CH3OCOCH2CN molecules, JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA, 107(1), 39-47, 200003
  115. High-resolution angle-resolved ion-yield measurements of H2O and D2O in the region of O 1s to Rydberg transitions, CHEMICAL PHYSICS LETTERS, 326(3-4), 314-320, 20000818
  116. Angle-resolved photofragmentation of the NK-shell excited CF3CN molecule, CHEMICAL PHYSICS LETTERS, 328(1-2), 147-152, 20000922
  117. Molecular deformation in the O 1s(-1)2 pi(u) excited states of CO2 probed by the triple-differential measurement of fragment ions, PHYSICAL REVIEW A, 62(4), 200010
  118. High resolution angle-resolved measurements of Auger emission from the photo-excited 1s(-1)3p state of Ne, JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 33(20), L685-L689, 20001028
  119. Nuclear motion in the O 1s(-1)2 pi(u) core-excited states of CO2 probed by sub-natural-width resonant Auger emission spectroscopy, CHEMICAL PHYSICS LETTERS, 330(1-2), 91-96, 20001103
  120. Photodissociation of ozone in the K edge region, The Journal of Physical Chemistry, A103(24), 4598-4601, 19990601
  121. K shell excitations of some organic molecules, Journal of Electron Spectroscopy and Related Phenomena, 101-103, 149-154, 19990601
  122. Auger electron spectra of CF${}_3$CN, CF${}_3$Cl, CF${}_2$Cl${}_2$ and CFCl${}_3$, Chemical Physics, 244(2-3), 439-448, 19990601
  123. C${}_6$F${}_5$X (X=H, F, Cl, Br and I) excited radical cation formation in the 10-40 eV region, Chemical Physics Letters, 292(4-6), 638-642, 19980801
  124. Photoabsorption spectrum of ozone in the K-edge region, Chemical Physics Letters, 277(5-6), 497-501, 19971001
  125. Reaction-path dynamics study of competing channels in the thermal unimolecular decomposition of isoxazole, The Journal of Physical Chemistry, 100(22), 9365-9369, 19960501
  126. Photoabsorption and fluorescence excitation spectra of CF${}_3$CN in the region of 6-41 eV, Chemical Physics Letters, 263(1-2), 173-177, 19961201

Invited Lecture, Oral Presentation, Poster Presentation

  1. The change of hydration structure of glycine betaine by salt addition studied by soft X-ray absorption spectroscopy, S. Ohsawa, H. Yuzawa, M. Nagasaka, H. Iwayama, K. Okada, UVSOR Symposium 2019, 2019/11/16, Without Invitation, Japanese
  2. Hydration structure of N,N-dimethylglycine studied by soft X-ray absorption spectroscopy, N. Fukuda, H. Yuzawa, M. Nagasaka, K. Okada, UVSOR Symposium 2019, 2019/11/16, Without Invitation, Japanese
  3. Site-specific fragmentation of the C K-shell excited cis-hexafluorocyclobutane molecule probed by the Auger-electron-photoion coincidence method, S. Ishikawa, K. Okada, H. Iwayama, E. Shigemasa, Hiroshima International Symposium on Future Science 2014, 2014/03, Without Invitation, English, Higashi-Hiroshima
  4. Variation in resonant Auger spectra of cis-hexafluorocyclobutane across the F K threshold, T. Kaneda, K. Okada, H. Iwayama, E. Shigemasa, The 30th Symposium on Chemical Kinetics and Dynamics, 2014/06/04, Without Invitation, English, Himeji
  5. Photofragmentation of the K-shell excited cis-1,1,2,2,3,4-hexafluorocyclobutane probed by partial ion yield and multiple-ion coincidence methods, K. Okada, T. Nakashima, Y. Kajitani, I. H. Suzuki, S. Nagaoka, Y. Tamenori, International Workshop on Photoionization and Resonant Inelastic X-Ray Scattering 2014, 2014/08, Without Invitation, English, Erice, Italy
  6. Soft X-ray emission spectroscopy of aqueous solutions of trimethylamine-N-oxide at the O K-edge, Y. Sasaki, Y. Horikawa, T. Tokushima, K. Okada, M. Oura, M. Aida, The 31st Symposium on Chemical Kinetics and Dynamics, 2015/06/03, Without Invitation, English, Sapporo
  7. Screening effect of the spectator electron as illuminated by the 2-D resonant Auger spectra of 1,1,1-trifluoroethane in the F 1s region, T. Kaneda, K. Okada, H. Iwayama, E. Shigemasa, The 31st Symposium on Chemical Kinetics and Dynamics, 2015/06/03, Without Invitation, English, Sapporo
  8. Spectator Auger decays of fluorocarbon molecules across the F 1s threshold, T. Kaneda, H. Iwayama, K. Okada, E. Shigemasa, Recent Progress in Molecular Science of Korea and Japan, 2015/07/30, Without Invitation, English, Higashi-Hiroshima
  9. Auger spectra of the fragment ions formed through the rearrangement of the C 1s-excited 3,3,3-trifluoropropene molecule, R. Tateishi, T. Kaneda, H. Iwayama, M. Kono, K. Okada, E. Shigemasa, The 12th Nano Bio Info Chemistry Symposium, 2015/12/05, Without Invitation, English, Higashi-Hiroshima
  10. Soft X-ray emission spectroscopy of aqueous solutions of trimethylamine-N-oxide at the O K-edge, Y. Sasaki, Y. Horikawa, T. Tokushima, K. Okada, M. Oura, and M. Aida, 39th International Conference on Vacuum Ultraviolet and X-Ray Physics (VUVX2016), 2016/07/04, Without Invitation, English, Zurich, Switzerland
  11. Variation in resonant Auger spectra of cis-hexafluorocyclobutane in the F 1s region, K. Okada, T. Kaneda, H. Iwayama, and E. Shigemasa, 39th International Conference on Vacuum Ultraviolet and X-Ray Physics (VUVX2016), 2016/07/04, Without Invitation, English, Zurich, Switzerland
  12. Spectator Auger decays of cis-1,1,2,2,3,4-hexafluorocyclobutane in the F 1s region, K. Okada, T. Kaneda, H. Iwayama, and E. Shigemasa, The 30th International Conference on Photonic, Electronic, and Atomic Collisions (ICPEAC2017), 2017/07/27, Without Invitation, English, Cairns, Australia
  13. Effect of salt addition to glycine betaine aqueous solutions on the electronic structure of water studied by soft X-ray absorption spectroscopy, Shohei Ohsawa, Hiroshi Iwayama, Hayato Yuzawa, Masanari Nagasaka, Kazumasa Okada, The 15th Nano Bio Info Chemistry Symposium, 2018/12/08, Without Invitation, English, Higashi-Hiroshima, Japan

Social Activities

Organizing Academic Conferences, etc.

  1. International Workshop on Photoionization (IWP2002), 2002/08, 2002/08
  2. The 35th Symposium on Chemical Kinetics and Dynamics, Treasurer, 2019/06, 2019/06