研究業績

1. OKADA, Y., MIYAZAKI, S. OTSUKI, T. and KUDOH, S.: “Aerosol Spectrometer for Measuring Diameters and Chemical Compositions of Particulate Organic Matter: II. Lower Detection Limit”, J. Aerosol Research, 29, 272-277 (2014).
2. OKADA, Y., OSHIO, N. and KUDOH, S.: “Fragmentation of Nanoparticle Agglomerates by Collisions”, J. Chem. Eng. Japan, 47, 864-868 (2014).
3. OKADA, Y., TANIGUCHI, T. and KUDOH, S.: “Formation of Non-Aggregated Nickel Nanoparticles in a Tubular Furnace Reactor”, J. Chem. Eng. Japan, 47, 382-385 (2014).
4. OKADA, Y., KANDA, S. and KAMON, Y.: “Degradation of Methylene Blue in Water by Collapse of Air Microbubbles”, Sci. Technol. Reports of Kansai Univ., 56, 49-55 (2014).
5. OKADA, Y., OSHIO, N., ODA, K. and KUDOH, S.: “Fragmentation of Nanoparticle Agglomerates by Collisions in Supersonic Flows”, J. Chem. Eng. Japan, 46, 530-534 (2013).
6. OKADA, Y., KAWABATA, T. and KUDOH, S.: “Aerosol Spectrometer for Measuring Diameters and Chemical Compositions of Particulate Organic Matter Using a GC-MS Equipped with an Adsorption-Thermal Desorption Tube”, J. Aerosol Research, 27, 306-310 (2012).
7. OKADA, Y., NITTA, K., TANAKA T. and KUDOH, S.: “Measurement of Concentration of Reaction Intermediate in Microreactors Using a Raman Microscope Spectrometer”, J. Chem. Eng. Japan, 45, 539-543 (2012).
8. OKADA, Y., NISHIUMI, K., UENO, S., KAWABATA, T. and KUDOH, S.: “Accuracy of Nanoparticle Diameters Measured with a Differential Mobility Analyzer in Free-Molecule Regime”, J. Aerosol Research, 26, 242-246 (2011).
9. OKADA, Y., KAWAMURA, H. and OZAKI, H.: “Formation of Non-Agglomerated Titania Nanoparticles in a Flame Reactor”, J. Chem. Eng. Japan, 44, 7-13 (2011).
10. OKADA, Y., KIDA, T., KAWASAKI, A., KAWASAKI, H. and ARAKAWA, R.: “Aerosol Spectrometer for On-line Measuring Diameters and Chemical Compositions of Volatile Organic Nanoparticles”, J. Aerosol Research, 25, 344-348 (2010).
11. 岡田芳樹, 乃村　誓, 田中貞次郎, 新多一毅:”マイクロリアクター内の物質移動計測に関する研究”, 化学工学論文集, 化学工学論文集, 35, 633-638 (2009).
12. KAWACHI, M., OKADA, Y., NISHIUMI, K. and IMANAKA, M.: “Electrical Mobilities of C60 Negative Ions in Noble Gases”, Jpn. J Appl. Phys., 47, 5684-5686 (2008).
13. OKADA, Y., HARA, Y. and KAWABATA, K.: “The Rate of Vapor Condensation on Clusters in Ion-induced Water Cluster Formation”, Earozoru Kenkyu, 22, 327-331 (2007).
14. OKADA, Y. and HARA, Y.: “Calculation of the Sticking Probability of a Water Molecule to a Water Cluster”, Earozoru Kenkyu, 22, 147-151 (2007).
15. IMANAKA, M., OKADA, Y., EHARA, K. and TAKEUCHI, K.: “Size Measurements of Gasborne Poly(amidoamine) (PAMAM) Dendrimers Using a Differential Mobility Analyzer (DMA)”, J. Aerosol Science, 37, 1643-1648 (2006).
16. IMANAKA, M., YOSHIZAWA, A., KUDOH, S., NAKATA, M., OKADA, Y. and TAKEUCHI, K.: “Differential Mobility Analysis of a C60 Negative Ion in He, Ne and Ar”, Jpn. J Appl. Phys., 45, 7243-7245 (2006).
17. KAWAI, Y., OKADA, Y., YAMAGUCHI, S., TAKEUCHI, K., YAMAUCHI and NAKAI, H.: “Isotope Effects in the Reaction of H+(H2O)2/D+(D2O)2 with Acetone/dimethylsulfoxide”, J. Mass Spectrom. Socie. Jpn., 53, 305-308 (2005).
18. TAKEUCHI, K., YABUMOTO, J., OKADA, Y., KAWAI, T., MONTAJIR, R.M. and GOTO, Y.: “A New Dual-Type DMA for Measuring Nanoparticles Emitted from Combustion Engines”, J. Nanoparticle Res., 7, 287-293 (2005).
19. YAMAUCHI, Y., NAKAI, H. and OKADA, Y.: “Short-time Fourier Transform Analysis of ab initio Molecular Dynamics Simulation: Collision Reaction between NH4+(NH3)2 and NH3”, J. Chem. Phys., 121, 11098-11103 (2004).
20. ORII, T., OKADA, Y., TAKEUCHI, K., ICHIHASHI M. and KONDOW T.: “Collision Energy Transfer in the incorporation of ND3 into NH4+(NH3)n-1 (n=3-9)”, J. Chem. Phys., 121, 9406-9416 (2004).
21. MIURA, I., OKADA, Y., KUDOH, S. and NAKATA, M.: “Organic Electroluminescence in Porous Alumina”, Jpn. J. Appl. Phys., 43, 7552-7553 (2004).
22. KAWAI, Y., YAMAGUCHI, S., OKADA, Y. and TAKEUCHI, K.: “Reactions of Protonated Water Clusters H+(H2O)n (n=2 and 4) with Acetonitrile, Dimethyl Sulfide, and Pyridine in a Guided Ion Beam Apparatus”, J. Mass Spectrom. Socie. Jpn., 52, 271-276 (2004).
23. KAWAI, Y., OKADA, Y., ORII, T., TAKEUCHI, K. and YAMAGUCHI, S.: “Selenium Cluster Formation Using a New Corona Discharge-assisted Cluster Ion Source”, Rev. Sci. Instrum., 75, 1904-1906 (2004).
24. KAWAI, Y., OKADA, Y., TAKEUCHI, K. and YAMAGUCHI, S.: “Optimization of Electron Impact Cluster Ion Source for Ammonia Cluster Generation”, J. Mass Spectrom. Socie. Jpn., 51, 563-565 (2003).
25. YAMAGUCHI, S., KUDOH, S., OKADA, Y., ORII, T., TAKEUCHI, K., ICHIKAWA, T. and NAKAI, H.: “Size-dependent Reaction Cross Section of Protonated Water Clusters H+(H2O)n (n=2-11) with D2O”, J. Phys. Chem. A, 107, 10904-10910 (2003).
26. YAMAGUCHI, S., KUDOH, S., KAWAI, Y., OKADA, Y., ORII, T. and TAKEUCHI, K.: “Collisional Reaction of Water Cluster Cations (H2O)n+ (n=2 and 3) with D2O”, Chem Phys. Lett., 377, 37-42 (2003).
27. OKADA, Y., YAMAGUCHI, S., KAWAI, Y., ORII, T. and TAKEUCHI, K.: “Incorporation Probability of a Water Molecule into a Water Cluster”, Chem. Phys., 294, 37-43 (2003).?
28. KAWAI, Y., YAMAGUCHI, S., OKADA, Y., TAKEUCHI, K., YAMAUCHI, Y., OZAWA, S. and NAKAI, H.: “Reactions of Protonated Water Clusters H+(H2O)n (n=2-6) with Dimethylsulfoxide in a Guided Ion Beam Apparatus”, Chem. Phys. Lett., 377, 69-73 (2003).
29. OKADA, Y., YAMAGUCHI, S. and TAKEUCHI, K.: “Calculation of Molecule-Cluster Collision Cross Sections”, J. Aerosol Research, Japan, 18, 47-52 (2003).
30. NAKAI, H., YAMAUCHI, Y., MATSUDA, A., OKADA, Y. and TAKEUCHI, K.: “Ab initio MD Simulation of Collision Reaction between Ammonia Cluster Ion and Ammonia Monomer”, J. Mol. Structure (Theochem), 592, 61-67 (2002).
31. KAWAI, Y., YAMAGUCHI, S., OKADA, Y. and TAKEUCHI, K.: “Reactions of Size-selected Protonated Water Clusters H(H2O)n+ (n=2-6) with an Acetone Molecule in a Guided Ion Beam Apparatus”, Int. J. Mass Spectrom. Ion Processes, 220, 375-383 (2002).
32. YAMAGUCHI, S., KUDOH, S., OKADA, Y., ORII, T. and TAKEUCHI, K.: “Cluster Size Dependence of the H/D Exchange Reaction Rate Constant for Protonated Water Clusters H+(H2O)n (n=2-11)”, Chem. Phys. Lett., 359, 480-485 (2002).
33. OKADA, Y., NAKAI, H., ICHIKAWA, T., ORII, T. and TAKEUCHI, K.: “The Stability of Ammonia Cluster ions and its Relation to Nucleation Rate”, J. Aerosol Research, Japan, 17, 30-38 (2002).
34. OKADA, Y., YABUMOTO, J. and TAKEUCHI, K.: “Aerosol Spectrometer for Size and Composition Analysis of Nanoparticles”, J. Aerosol Science, 33, 961-965 (2002).
35. SEOL, K.S., TSUTATANI, Y., FUJIMOTO, T., OKADA, Y., TAKEUCHI, K. and NAGAMOTO, H.: “New in situ Measurement Method for Nanoparticles Formed in a Radio Frequency Plasma-enhanced Chemical Vapor Deposition Reactor”, J. Vac. Sci. Technol. B, 19, 1998-2000 (2001).?
36. OKADA, Y., YAMAGUCHI, S. and TAKEUCHI, K.: “Growth of van der Waals Clusters in Steady Supersonic Laval Nozzle Flow: Change in Number Density of SF6 Monomers Undergoing Clustering”, Appl. Phys. B, 72, 507-513 (2001).
37. NAKAI, H., GOTO, T., OKADA, Y., ORII, T., and TAKEUCHI, K.: “Theoretical Study on Ammonia Cluster Ions: Nature of Thermodynamic Magic Number”, Chem. Phys., 262, 201-210 (2000).
38. ORII, T., OKADA, Y., TAKEUCHI, K., ICHIHASHI, M. and KONDOW, T.: “Reaction Cross Section for Incorporation of ND3 into NH4+(NH3)n-1 (n=3-9) at Very Low Energy Collision”, J. Chem. Phys., 113, 8026-8035 (2000).
39. SEOL, K.S., TSUTATANI, Y., CAMATA, R.P., YABUMOTO, J., ISOMURA, S., OKADA, Y., OKUYAMA, K. and TAKEUCHI, K.: “A Differential Mobility Analyzer and a Faraday Cup Electrometer for Operation at 200-930 Pa Pressure”, J. Aerosol Sci., 31, 1389-1395 (2000).
40. NAKAI, H., GOTO, T., OKADA, Y., ORII, T., TAKEUCHI, K., ICHIHASHI M. and KONDOW T.: “Theoretical Study on Ammonia Cluster Ions: Nature of Kinetic Magic Number”, J. Chem. Phys., 112, 7409-7415 (2000).
41. OKADA, Y., ASHIMINE, K. and TAKEUCHI, K.: “Onset of Clustering of SF6 in Steady Supersonic Laval Nozzle Flow”, Appl. Phys. B, 70, 117-121 (2000).
42. SEOL, K.S., OKADA, Y., OKUYAMA, K., and TAKEUCHI, K.: “A DMA for Measurement of Nanometer-sized Particles Formed at Very-low Pressure”, J. Aerosol Sci., 31, Suppl. 2, S638-S639 (2000).
43. ORII, T., OKADA, Y., TAKEUCHI, K., ICHIHASHI M. and KONDOW T.: “Experimental Study on Growth Rate of Clusters in Ion-Induced Nucleation”, J. Aerosol Sci., 30, Suppl. 1, S37-S38 (1999).
44. BEU, T. A., OKADA, Y. and TAKEUCHI, K.: “Calculations of Structures and Vibrational Spectra of Homogeneous and Mixed SF6 Clusters with Ar”, Euro. Phys. J. D, 6, 99-108 (1999).?
45. OKADA, Y., ASHIMINE, K., TAKEUCHI, K. and NAGAMOTO, H.: “Measurement of Onset of Clustering in Steady Supersonic Laval Nozzle Flow by FT-IR Spectroscopy”, J. Aerosol Sci., 29, Suppl. 1, S45-S46 (1998).
46. OKADA, Y., ISOMURA, S., ASHIMINE, K. and TAKEUCHI, K.: “Condensation of Uranium Hexafluoride in Supersonic Laval Nozzle Flow”, Appl. Phys. B, 67, 247-251 (1998).
47. OKADA, Y., SUNOUCHI, K., RYU, H., PATRA, A., ASHIMINE, K. and TAKEUCHI, K.: “Measurement of Condensation Onset in Steady Supersonic Laval Nozzle Flow for the Molecular Laser Isotope Separation Process”, J. Nucl. Sci. Technol., 35, 158-162 (1998).?
48. TAKEUCHI, K., KUGA, Y., OKADA, Y. and ONOE, J.: “A Critical Comment on the Previous Models for F-Atom Transfer Reaction from UF6 to UF5”, J. Nucl. Sci. Technol., 34, 1110-1111 (1997).
49. TANIMURA, S., OKADA, Y. and TAKEUCHI, K.: “Fourier Transform Infrared Spectroscopy of UF6 Clustering in a Supersonic Laval Nozzle: Cluster Configurations in Supercooled and Near-Equilibrium States”, J. Chem. Phys., 107, 7096-7105 (1997).
50. OKADA, Y., TANIMURA, S. and TAKEUCHI, K.: “Cluster Formation in Steady Supersonic Laval Nozzle Flow”, J. Aerosol Sci., 28, Suppl. 1, S491-S492 (1997).
51. OKADA, Y. and TAKEUCHI, K.: “Infrared Laser Isotope Separation of Silicon with Molecular Beam of Hexafluorodisilane”, J. Nucl. Sci. Technol., 34, 413-415 (1997).
52. OKADA, Y., TANIMURA, S., OKAMURA, H., SUDA, A., TASHIRO, H. and TAKEUCHI, K.: “Vibrational Spectroscopy and Predissociation of UF6 Clusters in Supersonic Laval Nozzle”, J. Mol. Structure., 410-411, 299-304 (1997).
53. OKADA, Y., ISOMURA, S. and TAKEUCHI, K.: “Cam-driven Pulsed Laval Nozzle with a Large Optical Path Length of 50 cm”, Rev. Sci. Instrum., 67, 3070-3072 (1996).
54. OKADA, Y., OKAMURA, H., ONOE, J., SUDA, A., TASHIRO, H. and TAKEUCHI, K.: “Vibrational Predissociation of UF6 Clusters in Supersonic Laval Nozzle”, Appl. Phys. B, 63, 57-61 (1996).
55. OKADA, Y., KATO, S., SATOOKA, S. and TAKEUCHI, K.: “Measurements of 235U/238U Isotopic Ratio in Photoproduct UF5 by Multiphoton Ionization and Time-of-Flight Mass Spectrometry”, Appl. Phys. B, 62, 515-519 (1996).
56. TANIMURA, S., OKADA, Y. and TAKEUCHI, K.: “FTIR Spectroscopy of UF6 Clustering in a Supersonic Laval Nozzle”, J. Phys. Chem., 100, 2842-2848 (1996).
57. OKADA, Y. and TAKEUCHI, K.: “A Method for Evaluation of Energy Unit in Infrared Laser Isotope Separation”, The Rev. Laser Eng., 24, 278-292 (1996).
58. OKADA, Y., KATO, S., SUNOUCHI, K., SATOOKA, S., TASHIRO, H. and TAKEUCHI, K.: “Contrast Ratio and Separation Factor in Multiphoton Dissociation of Supercooled UF6 Irradiated with Multifrequency 16 mm Raman Laser Radiation”, Appl. Phys. B, 62, 77-81 (1996).
59. OKADA, Y., KATO, S., SATOOKA, S., TASHIRO, H. and TAKEUCHI, K.: “An Apparatus for Isotopic Ratio Measurement in UF5 Formed by Infrared Multiphoton Dissociation of UF6 in Molecular Beam”, J. Nucl. Sci. Technol., 32, 1174-1180 (1995).
60. TANIMURA, S., OKADA, Y. and TAKEUCHI, K.: “The Hamiltonian of the Induction Effect on Infrared Spectra of SF6 Clusters”, Chem. Phys. Lett., 241, 62-66 (1995).
61. KATO, S., SATOOKA, S., ARATANI, M., OKADA, Y. and TAKEUCHI, K.: “Laser Production of UF5 Fine Particles from UF6 for Analysis of Uranium Isotopic Ratio by a-Spectrometry”, RADIOISOTOPES, 44, 373-378 (1995).
62. TANIMURA, S., OKADA, Y., KUGA, Y. and TAKEUCHI, K.: “Determination of Rotational Temperature of UF6 and Pressure in Supersonic Expansion by Use of Q-branch under the Influence of Pressure Broadening”, Chem. Phys. Lett., 232, 176-180 (1995).
63. OKADA, Y., KUGA, Y., SUNOUCHI, K., SATOOKA, S., ISOMURA, S., SUDA, A., TSUNEMI, A., TASHIRO, H. and TAKEUCHI, K.: “Cross Section of Supercooled 238UF6 in Multiphoton Absorption Induced by 16 Micrometer Raman-Laser Radiation”, Appl. Phys. B, 59, 475-477 (1994).
64. DENG, H.T., OKADA, Y., FOLTIN, M. and CASTLEMAN, A.W.: “Gas Phase Antimony/Magnesium/Oxygen Clusters”, J. Phys. Chem., 98, 9350-9353 (1994).
65. OKADA, Y., ISOMURA, S., SATOOKA, S. and TAKEUCHI, K.: “Pulsed Laval Nozzle with The Large Optical Path Length of 50 cm”, Rev. Sci. Instrum., 65, 2414-2415 (1994).
66. OKADA, Y., SUNOUCHI, K., KATO, S., TASHIRO, H. and TAKEUCHI, K.: “Modeling of Multifrequency Infrared Multiphoton Dissociation for Laser Isotope Separation”, J. Chem. Eng. Japan, 27, 222-227 (1994).
67. OKADA, Y., SUNOUCHI, K., KATO, S., SATOOKA, S., TASHIRO, H. and TAKEUCHI, K.: “Determination Method of Dissociation Yield from HF Fluorescence in Infrared Multiphoton Dissociation of Supercooled UF6”, J. Nucl. Sci. Technol., 31, 130-135 (1994).
68. OKADA, Y., TASHIRO, H. and TAKEUCHI, K.: “Multiphoton Absorption of 16mm Raman Laser Radiation in 238UF6”, J. Nucl. Sci. Technol., 30, 762-767 (1993).
69. OKADA, Y., TAKEUCHI, K., YAMANASHI, H. and USHIJIMA, H.: “Whiskering on Carbon Fibers by Heating with a Carbon Dioxide Laser”, Jpn. J. Appl. Phys., 31, L1255-L1257 (1992).
70. OKADA, Y., TAKEUCHI, K., YAMANASHI, H. and USHIJIMA, H.: “Formation of Carbon Whiskers by Heating with a Carbon Dioxide Laser”, J. Mater. Sci. Lett., 11, 1715-1717 (1992).
71. OKADA, Y., KATO, S., SATOOKA, S. and TAKEUCHI, K.: “TEA CO2 Laser-Induced Infrared Multiphoton Dissociation of Zirconium tetra-tert-Butoxide: Reaction Mechanism and Dissociation Products”, J. Laser Applications, 4, 15-21 (1992).
72. KUGA, Y., ENDO, S., SATOOKA, S., OKADA, Y., TASHIRO, H. and TAKEUCHI, K.: “Collection of 235U-Enriched UF5 Particles and Direct Measurement of Separation Factor in Laser Isotope Separation of Uranium”, J. Nucl. Sci. Technol., 28, 870-872 (1991).
73. OKADA, Y., KATO, S., SATOOKA, S. and TAKEUCHI, K.: “Laser Isotope Separation of Heavy Elements by Infrared Multiphoton Dissociation of Metal Alkoxides”, Spectrochimica Acta, 46A, 643-646 (1990).
74. TAKAMATSU, T., SHIOYA, S. and OKADA, Y.: “Molecular Weight Distribution Control in a Batch Polymerization Reactor”, I&EC Research, 27, 93-99 (1988).
75. TAKAMATSU, T., SHIOYA, S. and OKADA, Y.: “Design of Adaptive/Inferential Control System and Its Application to Polymerization Reactors”, I&EC Process Design&Development, 25, 821-828 (1986).
76. TAKAMATSU, T., SHIOYA, S., OKADA, Y. and KANDA, M.: “Profile Control Scheme in a Baker’s Yeast Fed-Batch Culture”, Biotechnology and Bioengineering, XXVII, 1675-1686 (1985).