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Photolysis and desorption of adsorbed halomethane molecules under long-wavelength radiation of excimer lasersстатья
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
- Авторы: Varakin V.N., Kuzyakov Yu Ya
- Журнал: High Energy Chemistry
- Том: 42
- Номер: 3
- Год издания: 2008
- Издательство: Pleiades Publishing, Ltd
- Местоположение издательства: Road Town, United Kingdom
- Первая страница: 240
- Последняя страница: 245
- DOI: 10.1134/S0018143908030107
- Аннотация: The photolysis and desorption of CH2I2, CH3I, CCl4, CHCl3, CH2Cl2, CF2Cl2, and CHF2Cl molecules adsorbed on fused silica under the action of XeF and XeCl laser radiation absorbed by these molecules have been studied. The desorption of molecules that occurs due to expansion to the long-wavelength region of the absorption spectrum of molecules in the adsorbed state, compared to the gas phase, predominates. The laser desorption is characterized by a strong nonlinear dependence on the density of radiation energy. Depending on the relationship between the laser radiation wavelength and the spectrum of electronic states of molecules, photolysis is observed upon absorption of either one or two photons. At an increased fluence of laser radiation energy, the one-photon detachment of the primary CH2I fragment from the CH2I2 molecule changes into the three-photon process. A similar behavior is revealed for the desorption of CH3I molecules from clusters formed on the surface in multilayer adsorption coverages.
- Добавил в систему: Кузяков Юрий Яковлевич