Autoionizing Resonances in Three-Photon Ionization Spectrum of the Ytterbium Atom

2015 ◽  
Vol 60 (3) ◽  
pp. 225-231
Author(s):  
A.I. Gomonai ◽  
Keyword(s):  
Ytterbium Atom ◽  
Photon Ionization ◽  
Ionization Spectrum

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.

Reinterpretation of the resonant two-photon ionization spectrum of 1-methylphenylhydrazine

2012 ◽  
Vol 1028 ◽  
pp. 13-15
Author(s):  
Changwu Dong ◽  
Dan Yu ◽  
Lijuan Zhang ◽  
Yikui Du ◽  
Qihe Zhu ◽  
...  
Keyword(s):  
Two Photon ◽  
Photon Ionization ◽  
Ionization Spectrum

scholarly journals UV Resonant Two-Photon Ionization Spectrum of 1-Naphthol

2009 ◽  
Vol 25 (12) ◽  
pp. 2488-2492
Author(s):  
ZHANG Shu-Dong ◽  
◽  
ZHANG Hai-Fang ◽  
TZENG Wen-Bi
Keyword(s):  
Two Photon ◽  
Photon Ionization ◽  
Ionization Spectrum

Two-photon ionization spectrum of the 1 L b ← S 0 transition in toluene

1979 ◽  
Vol 44 (2) ◽  
pp. 295-302 ◽  
Author(s):  
Karsten Krogh-Jespersen ◽  
Richard P. Rava ◽  
Lionel Goodman
Keyword(s):  
Two Photon ◽  
Photon Ionization ◽  
Ionization Spectrum

scholarly journals Three-Photon Ionization with One-Photon Resonance between Excited Levels

Atoms ◽  
2021 ◽  
Vol 9 (3) ◽  
pp. 68
Author(s):  
Aleksandr Gomonai ◽  
Eugene Remeta ◽  
Anna Gomonai
Keyword(s):  
Laser Radiation ◽  
Density Matrix ◽  
Matrix Method ◽  
Excited Level ◽  
Level Model ◽  
Photon Ionization ◽  
Photon Resonance ◽  
Ionization Spectrum

Within the framework of a three-level model, the process of three-photon ionization with one-photon resonance between two excited levels (with the lower one being initially unpopulated) is considered using the density matrix method. It is shown that such resonance can result in the appearance of a maximum in the three-photon ionization spectrum when detuning between the resonance wavenumber and the wavenumber of the transition responsible for the lower excited level being populated exceeds the laser radiation linewidth by more than three orders of magnitude.

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