Ring inversion of dihydronaphthalene by laser-induced fluorescence in a supersonic jet |
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| Institution: | 1. National Centre for Nuclear Research, A. Soltana 7, 05-400 Otwock, Poland;2. Lukasiewicz Institute for Microelectronics and Photonics, Wolczynska 133, 01-926 Warszawa, Poland;3. Institute of High Pressure Physics PAS, ul. Sokolowska 29/37, 01-142 Warsaw, Poland;4. IPFN, Instituto Superior Técnico, Universidade de Lisboa, Estrada Nacional 10, Bobadela 2695-066, Portugal;1. Laboratory of Optics and Applications, Centre for Atomic Molecular Physics and Quantum Optics (CEPAMOQ), Faculty of Science, The University of Douala, P.O. Box 8580, Douala, Cameroon;2. Department of Physics, Faculty of Science, The University of Bangui, P.O. Box 908, Bangui, Central African Republic;3. Laboratoire de Spectroscopie Atomique Moléculaire et Applications (LSAMA), Faculty of Science, The University of Tunis El Manar, P.O. Box 2092, Tunis, Tunisia;4. Department of Physics, Higher Teacher Training School, The University of Maroua, P.O. Box 46, Maroua, Cameroon;1. Polymerization Engineering Department, Iran Polymer and Petrochemical Institute (IPPI), P.O. Box 14965/115, Tehran, Iran;2. Gas Conversion Department, Faculty of Petrochemicals, Polymer and Petrochemical Institute, PO Box 14975-112, Tehran, Iran;1. PRG, Department of Geoscience, University of Calgary, T2N 1N4, Canada;2. Department of Oncology, University of Calgary, T2N 4N1, Canada;3. Instituto Nacional de Investigaciones Nucleares, C.P. 52750, Mexico;4. AGg, Department of Geoscience, University of Calgary, T2N 1N4, Canada;5. Lundin Norway, 1366 Lysaker, Norway;1. Institute for Nuclear Research, Prospect Nauki 47, 03680 Kiev, Ukraine;2. Faculty of Physics, Taras Shevchenko National University of Kiev, Prospect Glushkova 2, 03022 Kiev, Ukraine;3. Department of Mathematics, Financial University, Leningradsky Prospect 49, 125993 Moscow, Russia;1. Universität Rostock, Institut für Mathematik, Ulmenstraße 69, 18057 Rostock, Germany;2. Technische Universität Kaiserslautern, Lehrstuhl für Thermodynamik, Erwin-Schrödinger-Straße 44, 67663 Kaiserslautern, Germany;3. Leibniz-Institut für Katalyse e.V. an der Universität Rostock, Albert-Einstein-Straße 29a, 18059 Rostock, Germany;4. Université de Sherbrooke, Department of Chemical & Biotechnological Engineering, 2500 Blvd. de L’Université, Sherbrooke, Canada |
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| Abstract: | The laser-induced fluorescence excitation (FE) and the single vibronic level fluorescence (SVL) emission spectra of 1,2-dihydronaphthalene have been studied in a pulsed supersonic jet. The 128 cm?1 progression in FE and the 140 cm?1 progression in SVL have been assigned to the low-frequency large-amplitude torsional motion between the two symmetry-related non-planar conformations of the excited and the ground states, respectively. Comparison of frequencies and intensifies with corresponding values calculated from a model double-well potential leads to a barrier height of 640 cm?1 for the excited state and greater than 1000 cm?1 for the ground state. |
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