scholarly journals Laser two-photon ionization technique for a high sensitive detection of pyrene.

1982 ◽  
Vol 31 (7) ◽  
pp. E247-E250 ◽  
Author(s):  
Sunao YAMADA ◽  
Koji KANO ◽  
Teiichiro OGAWA
Keyword(s):  
Sensitive Detection ◽  
Ionization Technique ◽  
Two Photon ◽  
Photon Ionization

Solvents Effects in Determination of Anthracene on Solution Surfaces by Laser Two-Photon Ionization Technique

1994 ◽  
Vol 66 (23) ◽  
pp. 4150-4153 ◽  
Author(s):  
Hangting. Chen ◽  
Takanori. Inoue ◽  
Teiichiro. Ogawa
Keyword(s):  
Ionization Technique ◽  
Two Photon ◽  
Photon Ionization

Highly Sensitive Detection of Aromatic Molecules by Laser Two-Photon Ionization on the Surface of Water in Ambient Air

1994 ◽  
Vol 66 (7) ◽  
pp. 1012-1014 ◽  
Author(s):  
Takanori. Inoue ◽  
Kazuhiro. Masuda ◽  
Keiji. Nakashima ◽  
Teiichiro. Ogawa
Keyword(s):  
Ambient Air ◽  
Sensitive Detection ◽  
Aromatic Molecules ◽  
Two Photon ◽  
Highly Sensitive ◽  
Photon Ionization ◽  
Highly Sensitive Detection

scholarly journals Two-Color Two-Photon Ionization Spectrum of Pyrene in N-Hexane

1997 ◽  
Vol 17 (1) ◽  
pp. 19-28 ◽  
Author(s):  
Keiji Nakashima ◽  
Hirofumi Soga ◽  
Teiichiro Ogawa
Keyword(s):  
Polar Solvent ◽  
Dye Laser ◽  
Ionization Threshold ◽  
Excitation Energies ◽  
Ionization Technique ◽  
Two Photon ◽  
Photoionization Process ◽  
Photon Ionization ◽  
Ionization Spectrum ◽  
Near Threshold

The photoionization process of pyrene in non-polar solvent has been investigated using a two-color two-photon ionization technique. The ionization spectrum near threshold of pyrene in n-hexane was measured by a delayed irradiation of a dye laser 20 ns after an N2 laser at total excitation energies of 5.9–6.22 eV. The two-photon ionization threshold of pyrene was in the vicinity of 5.9 eV which is larger by 0.7 eV than that expected from the onset of one-photon ionization. The ionization spectrum shows maxima at 5.92 and 5.99 eV which may be assigned to an autoionization process.

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