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- Title
UV and 532 nm Photo-Dissociation of 2-Nitrotoluene: Observation of Electronically-Excited NO; Emission from Carbon (I); N-NO Energy Transfer; and Stabilization of 2-Nitrotoluene-Ar Clusters.
- Authors
Diez-y-Riega, H.; Eilers, H.
- Abstract
2-nitrotoluene is a taggant used in explosive compounds and also often used as a simulant for nitro-based high explosives. Various spectroscopic techniques focus on the detection of vibrationally excited NO as an indicator for the presence of explosives. We report on the photo-dissociation of 2-nitrotoluene using UV and 532 nm wavelengths. We not only observe vibrationally excited NO in its electronic ground state, but also vibrationally excited NO in its electronic excited state. The photo-dissociation of 2-nitrotoluene leads to the formation of atomic carbon and its emission, overlapping the NO emission, is observed. Energy transfer from laser-excited nitrogen to NO leads to NO emission with long lifetimes. Argon atoms stabilize 2-nitrotoluene molecules and delay their photo-dissociation.
- Subjects
ULTRAVIOLET spectroscopy; PHOTODISSOCIATION; NITROTOLUENE; ELECTRONIC excitation; NITROGEN oxides; FIELD emission; ENERGY transfer; MICROCLUSTERS
- Publication
Applied Physics B: Lasers & Optics, 2012, Vol 108, Issue 1, p189
- ISSN
0946-2171
- Publication type
Article
- DOI
10.1007/s00340-012-5087-5