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Research Output 1988 2019

  • 285 Citations
  • 9 h-Index
  • 40 Article
  • 6 Conference contribution
  • 2 Comment/debate
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Article
2019
Metabolites
naphthalene
Ultrashort pulses
urine
Ionization
2018
2 Citations (Scopus)
Ion sources
Ultrashort pulses
Pesticides
Gas chromatography
Mass spectrometry
2 Citations (Scopus)

Optimal Laser Wavelength for Femtosecond Ionization of Polycyclic Aromatic Hydrocarbons and Their Nitrated Compounds in Mass Spectrometry

Li, A., Imasaka, T. & Imasaka, T., Feb 20 2018, In : Analytical Chemistry. 90, 4, p. 2963-2969 7 p.

Research output: Contribution to journalArticle

Nitro Compounds
Polycyclic Aromatic Hydrocarbons
Ionization
Mass spectrometry
Polycyclic aromatic hydrocarbons
2017
3 Citations (Scopus)

Determination of Nerve Agent Metabolites by Ultraviolet Femtosecond Laser Ionization Mass Spectrometry

Hamachi, A., Imasaka, T., Nakamura, H., Li, A. & Imasaka, T., May 2 2017, In : Analytical Chemistry. 89, 9, p. 5030-5035 6 p.

Research output: Contribution to journalArticle

Metabolites
Ultrashort pulses
Ionization
Mass spectrometry
Photons
2 Citations (Scopus)

Suppression of fragmentation in multiphoton ionization mass spectrometry using a near-infrared femtosecond laser as an ionization source

Li, A., Dinh, T. P., Imasaka, T. & Imasaka, T., Oct 21 2017, In : Analyst. 142, 20, p. 3942-3947 6 p.

Research output: Contribution to journalArticle

Ion sources
Ultrashort pulses
Ionization
Mass spectrometry
Mass Spectrometry
2 Citations (Scopus)

Use of chemical conversion for determination of nitrated aromatic hydrocarbons using femtosecond ionization mass spectrometry

Fujii, T., Imasaka, T. & Imasaka, T., Dec 15 2017, In : Analytica Chimica Acta. 996, p. 48-53 6 p.

Research output: Contribution to journalArticle

Aromatic Hydrocarbons
hydrazine
aromatic hydrocarbon
Ionization
Mass spectrometry
2016
4 Citations (Scopus)

Analysis of Parent/Nitrated Polycyclic Aromatic Hydrocarbons in Particulate Matter 2.5 Based on Femtosecond Ionization Mass Spectrometry

Itouyama, N., Matsui, T., Yamamoto, S., Imasaka, T. & Imasaka, T., Feb 1 2016, In : Journal of the American Society for Mass Spectrometry. 27, 2, p. 293-300 8 p.

Research output: Contribution to journalArticle

Particulate Matter
Polycyclic Aromatic Hydrocarbons
Ionization
Mass spectrometry
Mass Spectrometry

A simple method for the evaluation of the pulse width of an ultraviolet femtosecond laser used in two-photon ionization mass spectrometry

Imasaka, T., Hamachi, A., Okuno, T. & Imasaka, T., Jan 1 2016, In : Applied Sciences. 6, 5, 136.

Research output: Contribution to journalArticle

Femtosecond Laser
Mass Spectrometry
Ionization
Ultrashort pulses
Ultraviolet
3 Citations (Scopus)

Detection of polychlorinated biphenyls in transformer oils in Vietnam by multiphoton ionization mass spectrometry using a far-ultraviolet femtosecond laser as an ionization source

Duong, V. T. T., Duong, V., Lien, N. T. H., Imasaka, T., Tang, Y., Shibuta, S., Hamachi, A., Hoa, D. Q. & Imasaka, T., Mar 1 2016, In : Talanta. 149, p. 275-279 5 p.

Research output: Contribution to journalArticle

Insulating oil
Vietnam
Polychlorinated Biphenyls
Ion sources
Ultrashort pulses
9 Citations (Scopus)

Determination of Fragrance Allergens by Ultraviolet Femtosecond Laser Ionization Mass Spectrometry

Shibuta, S., Imasaka, T. & Imasaka, T., Nov 1 2016, In : Analytical Chemistry. 88, 21, p. 10693-10700 8 p.

Research output: Contribution to journalArticle

Fragrances
Ultrashort pulses
Allergens
Ionization
Mass spectrometry
4 Citations (Scopus)

Determination of Hexachlorocyclohexane by Gas Chromatography Combined with Femtosecond Laser Ionization Mass Spectrometry

Yang, X., Imasaka, T., Li, A. & Imasaka, T., Dec 1 2016, In : Journal of the American Society for Mass Spectrometry. 27, 12, p. 1999-2005 7 p.

Research output: Contribution to journalArticle

Lindane
Ultrashort pulses
Gas chromatography
Gas Chromatography
Ionization
5 Citations (Scopus)
Particulate Matter
Polycyclic Aromatic Hydrocarbons
Polycyclic aromatic hydrocarbons
Ultrashort pulses
Ionization
2015
1 Citation (Scopus)

Autocorrelation and frequency-resolved optical gating measurements based on the third harmonic generation in a gaseous medium

Takao, Y., Imasaka, T., Kida, Y. & Imasaka, T., Jan 1 2015, In : Applied Sciences (Switzerland). 5, 2, p. 136-144 9 p.

Research output: Contribution to journalArticle

Harmonic generation
Autocorrelation
optical measurement
autocorrelation
Laser pulses

Autocorrelation and Frequency-Resolved Optical Gating Measurements Based on the Third Harmonic Generation in a Gaseous Medium

Takao, Imasaka, T., Kida, Y. & Imasaka, T., 2015, In : Applied Sciences. 5, p. 136-144 9 p.

Research output: Contribution to journalArticle

8 Citations (Scopus)

Determination of triacetone triperoxide using ultraviolet femtosecond multiphoton ionization time-of-flight mass spectrometry

Ezoe, R., Imasaka, T. & Imasaka, T., Jan 1 2015, In : Analytica Chimica Acta. 853, 1, p. 508-513 6 p.

Research output: Contribution to journalArticle

Ionization
Mass spectrometry
Mass Spectrometry
ionization
mass spectrometry
8 Citations (Scopus)

Multiphoton ionization mass spectrometry of nitrated polycyclic aromatic hydrocarbons

Tang, Y., Imasaka, T., Yamamoto, S. & Imasaka, T., Aug 1 2015, In : Talanta. 140, p. 109-114 6 p., 15460.

Research output: Contribution to journalArticle

1-nitropyrene
Polycyclic Aromatic Hydrocarbons
Ionization
Mass spectrometry
Mass Spectrometry
27 Citations (Scopus)

Resonant and nonresonant multiphoton ionization processes in the mass spectrometry of explosives

Imasaka, T., Hamachi, A., Okuno, T., Imasaka, T. & Kida, Y., Mar 3 2015, In : Analytical Chemistry. 87, 5, p. 3027-3031 5 p.

Research output: Contribution to journalArticle

Ionization
Mass spectrometry
Ions
Nitro Compounds
Photons
2014
2 Citations (Scopus)

An evaluation of the spectral properties of nerve agents for laser ionization mass spectrometry

Imasaka, T. & Imasaka, T., Jan 1 2014, In : analytical sciences. 30, 12, p. 1113-1120 8 p.

Research output: Contribution to journalArticle

Sarin
Mustard Gas
Soman
Ionization potential
Excitation energy
4 Citations (Scopus)

Autocorrelator for measuring an ultrashort optical pulse width in the ultraviolet region based on two-photon ionization of an organic compound

Okuno, T., Imasaka, T., Kida, Y. & Imasaka, T., Jan 1 2014, In : Optics Communications. 310, p. 48-52 5 p.

Research output: Contribution to journalArticle

organic compounds
Organic compounds
Ionization
Laser pulses
pulse duration
2013
5 Citations (Scopus)
autocorrelation
sapphire
harmonics
ionization
pulse duration
2012
6 Citations (Scopus)
Ionization
Laser pulses
pulse duration
Photons
ionization
2011
25 Citations (Scopus)

Analysis of pesticides by gas chromatography/multiphoton ionization/mass spectrometry using a femtosecond laser

Li, A., Imasaka, T., Uchimura, T. & Imasaka, T., Sep 2 2011, In : Analytica Chimica Acta. 701, 1, p. 52-59 8 p.

Research output: Contribution to journalArticle

Ultrashort pulses
Pesticides
Alkanes
Gas chromatography
Gas Chromatography
5 Citations (Scopus)

Multiphoton ionization/mass spectrometry of polybrominated diphenyl ethers

Shitamichi, O., Imasaka, T., Uchimura, T. & Imasaka, T., Oct 1 2011, In : Analytical Methods. 3, 10, p. 2322-2327 6 p.

Research output: Contribution to journalArticle

Halogenated Diphenyl Ethers
Ultrashort pulses
Ionization
Mass spectrometry
Ethers
2010
12 Citations (Scopus)

Enhancement of molecular ions in mass spectrometry using an ultrashort optical pulse in multiphoton ionization

Shimizu, T., Watanabe-Ezoe, Y., Yamaguchi, S., Tsukatani, H., Imasaka, T., Zaitsu, S. I., Uchimura, T. & Imasaka, T., May 1 2010, In : Analytical chemistry. 82, 9, p. 3441-3444 4 p.

Research output: Contribution to journalArticle

Mass spectrometers
Ionization
Mass spectrometry
Laser pulses
Ions
24 Citations (Scopus)

Gas chromatography/femtosecond multiphoton ionization/time-of-flight mass spectrometry of dioxins

Watanabe-Ezoe, Y., Li, X., Imasaka, T., Uchimura, T. & Imasaka, T., Aug 1 2010, In : Analytical Chemistry. 82, 15, p. 6519-6525 7 p.

Research output: Contribution to journalArticle

Dioxins
Gas chromatography
Ionization
Mass spectrometry
Isotopes
2009
9 Citations (Scopus)

Data processing technique in gas chromatography/time-of-flight mass spectrometry

Imasaka, T., Nakamura, N., Sakoda, Y., Yamaguchi, S., Watanabe-Ezoe, Y., Uchimura, T. & Imasaka, T., Jun 19 2009, In : Analyst. 134, 4, p. 712-718 7 p.

Research output: Contribution to journalArticle

Isotopes
Gas chromatography
Gas Chromatography
Mass spectrometry
Mass Spectrometry
10 Citations (Scopus)

Gas Chromatography/Time-of-Flight Mass Spectrometry of Triacetone Triperoxide Based on Femtosecond Laser Ionization

Yamaguchi, S., Uchimura, T., Imasaka, T. & Imasaka, T., 2009, In : Rapid Communications in Mass Spectrometry. 23, 19, p. 3101-3106 6 p.

Research output: Contribution to journalArticle

15 Citations (Scopus)

Near-ultraviolet femtosecond laser ionization of dioxins in gas chromatography/time-of-flight mass spectrometry

Yamaguchi, S., Kira, F., Miyoshi, Y., Uchimura, T., Watanabe-Ezoe, Y., Shin-Ichi, Z., Imasaka, T. & Imasaka, T., Jan 26 2009, In : Analytica Chimica Acta. 632, 2, p. 229-233 5 p.

Research output: Contribution to journalArticle

Dioxins
PCDF
Ultrashort pulses
Gas chromatography
Gas Chromatography
7 Citations (Scopus)

Selective ionization of 2,4-xylenol in mass spectrometry using a tunable laser and supersonic jet technique

Tsukatani, H., Okudaira, H., Uchimura, T., Imasaka, T. & Imasaka, T., May 2009, In : analytical sciences. 25, 5, p. 599-604 6 p.

Research output: Contribution to journalArticle

Laser tuning
Ionization
Mass spectrometry
Isomers
Wavelength
2 Citations (Scopus)
Commonwealth of Independent States
Linear equations
Molecules
Geometry
Chlorine
2006
3 Citations (Scopus)

Ab initio MO study on the S1 ← S0 origin transition energies of polychlorodibenzofurans (PCDFs)

Imasaka, T., Hirokawa, S. & Imasaka, T., Nov 6 2006, In : Journal of Molecular Structure: THEOCHEM. 774, 1-3, p. 7-12 6 p.

Research output: Contribution to journalArticle

Electron correlations
Electrons
Ionization potential
Chlorine
Electron transitions
1 Citation (Scopus)

Conformational changes and S1 ← S0 origin transition energies: Polychlorinated biphenyls (PCBs)

Hirokawa, S., Imasaka, T., Oyakawa, Y., Oishi, M. & Imasaka, T., Oct 23 2006, In : Journal of Molecular Structure: THEOCHEM. 772, 1-3, p. 31-37 7 p.

Research output: Contribution to journalArticle

polychlorinated biphenyls
Polychlorinated Biphenyls
Electron correlations
Commonwealth of Independent States
Chlorine
2005
39 Citations (Scopus)
Aryl Hydrocarbon Hydroxylases
Molecular electronics
Cytochrome P-450 CYP1A1
Chlorine
Electronic properties
2004
4 Citations (Scopus)
Electron correlations
Electrons
Chlorine
Electron transitions
Ground state
2003
14 Citations (Scopus)

Ab initio MO study on the S1 ← S0 transitions of polychlorinated dibenzo-p-dioxins

Hirokawa, S., Imasaka, T. & Urakami, Y., Mar 19 2003, In : Journal of Molecular Structure: THEOCHEM. 622, 3, p. 229-237 9 p.

Research output: Contribution to journalArticle

Chlorine
Atoms
Geometry
Benzene
X-Rays
2001
clathrates
statistical mechanics
crystal field theory
atoms
molecules
8 Citations (Scopus)

S0 and S1 states of monochlorophenols: Ab initio CASSCF MO study

Hirokawa, S., Imasaka, T. & Imasaka, T., Oct 11 2001, In : Journal of Physical Chemistry A. 105, 40, p. 9252-9257 6 p.

Research output: Contribution to journalArticle

Chlorine
chlorine
Atoms
Bond length
Phenol
1997
clathrates
crystal field theory
dipoles
molecules
sublattices
1994
4 Citations (Scopus)

Quantum Effects on the Orientational Ordering of H2S and D2S Molecules Enclosed in β-Quinol Clathrate

Hlrokawa, S., Imasaka, T. & Matsuo, T., Jan 1 1994, In : journal of the physical society of japan. 63, 2, p. 593-601 9 p.

Research output: Contribution to journalArticle

clathrates
dipoles
molecules
depolarization
sublattices
1988
2 Citations (Scopus)

Orientational Order of Guest H2S Molecules in β-Quinol Clathrate

Hirokawa, S. & Imasaka, T., Jan 1 1988, In : journal of the physical society of japan. 57, 11, p. 3843-3850 8 p.

Research output: Contribution to journalArticle

clathrates
statistical mechanics
molecules
dipole moments
infrared spectra