Laser two-photon ionization spectrometry and photoionization threshold of perylene on the surface of water

There are a few bands in the two-photon ionization spectrum (wavelength dependence of the photoionization charge) of perylene on the water surface in the 340–440 nm region. The photoionization threshold of perylene on water was 5.95 ± 0.10 eV. The polarization energy of the positive ion ( P +) was d...

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Bibliographic Details
Published in:Chemical physics letters 1994-10, Vol.229 (3), p.328-332
Main Authors: Ogawa, Teiichiro, Chen, Hangting, Inoue, Takanori, Nakashima, Keiji
Format: Article
Language:English
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Summary:There are a few bands in the two-photon ionization spectrum (wavelength dependence of the photoionization charge) of perylene on the water surface in the 340–440 nm region. The photoionization threshold of perylene on water was 5.95 ± 0.10 eV. The polarization energy of the positive ion ( P +) was determined as −0.95 eV, which was almost identical with that in trimethylpentane and was about half as much as the calculated value. The effective dielectric constant of water should be much smaller for surface photoionization.
ISSN:0009-2614
1873-4448
DOI:10.1016/0009-2614(94)01038-2