Surface analysis by photo-stimulated desorption using tunable VUV radiation
| Autor: | Shoichi Kubodera, Masahito Katto, Wataru Sasaki, Daichi Kai, Masanori Kaku, Atsushi Yokotani |
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| Rok vydání: | 2015 |
| Předmět: |
Materials science
genetic structures Physics and Astronomy (miscellaneous) Physics::Instrumentation and Detectors General Engineering Analytical chemistry Physics::Optics General Physics and Astronomy Mass spectrometry Dissociation (chemistry) Adsorption Desorption Physics::Atomic and Molecular Clusters Mass spectrum Molecule Irradiation Physics::Chemical Physics Atomic physics Spectroscopy |
| Zdroj: | Applied Physics B. 119:427-433 |
| ISSN: | 1432-0649 0946-2171 |
| Popis: | We have demonstrated the photon-stimulated surface spectroscopy using broadband vacuum ultraviolet (VUV) emissions from a laser-produced plasma, in which adsorbed atoms or molecules on material surfaces were to be desorbed and dissociated as a result of absorption of the wavelength-selected VUV photons. Desorbed and dissociated atoms or molecules were then detected by a mass spectrometer. Mass spectra of polyethylene and polyvinyl chloride samples were obtained as a function of the irradiation wavelength. We have found sufficient characteristic differences of the mass spectra in the irradiation wavelength shorter than 200 nm in each sample. The desorption and dissociation of atoms or molecules from material surfaces depended on bond energy or molecular structure. |
| Databáze: | OpenAIRE |
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