Translational spectroscopy of HNCO photodissociation |
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| Affiliation: | 1. NASA Goddard Space Flight Center, Code 699, 8800 Greenbelt Road, Greenbelt, MD 20771, USA;2. LATMOS/IPSL, UVSQ Université Paris-Saclay, UPMC Univ. Paris 06, CNRS, 78280 Guyancourt, Francen;3. Institut de Chimie des Substances Naturelles ICSN-CNRS UPR 2301, Université Paris-Sud, 1 avenue de la terrasse, 91198 Gif-sur-Yvette, France;4. Normandie Université, COBRA, UMR 6014 et FR3038, Université de Rouen, INSA de Rouen, CNRS, IRCOF, 1 rue Tesnière, 76821 Mont-Saint-Aignan Cedex, France;5. Institut Universitaire de France, 103 Bvd St-Michel, 75005 Paris, France;6. LGPM, Ecole Centrale de Paris, Grande voie des Vignes, 92295 Chatenay-Malabry Cedex, France |
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| Abstract: | The kinetic energy released in the photodissociation of HNCO is measured by photofragment translational spectroscopy. In this study, CO is ionized by laser ionization immediately following its ejection from HNCO. The time for the CO ions to travel the length of our spectrometer is then measured, and the kinetic energy released by the photodissociation is calculated. Changing the wavelength of the laser that ionizes the CO changes the selected internal energy and the expected change in the kinetic energy release is observed. These data confirm that the threshold for NH (a 1Δ) production is the dissociation energy. |
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