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Application of time-resolved spectroscopy to concentration measurements in gas mixtures
Institution:1. Center for Astrophysics |Harvard & Smithsonian, Atomic and Molecular Physics Division, Cambridge, MA 02138, USA;2. Nuclear Data Section, International Atomic Energy Agency, Vienna International Centre, PO Box 100, Vienna A-1400, Austria;3. V.E. Zuev Institute of Atmospheric Optics, Laboratory of Theoretical Spectroscopy, Russian Academy of Sciences, Tomsk 634055, Russia;4. QUAMER laboratory, Tomsk State University, Tomsk 634050, Russia;5. Hefei National Laboratory for Physical Science at Microscale, University of Science and Technology of China, Hefei, China;6. Institute of Physics, Faculty of Physics, Astronomy and Informatics, Nicolaus Copernicus University in Torun, Grudziadzka 5, Torun 87-100, Poland;7. Department of Chemistry, Lomonosov Moscow State University, Moscow 119991, Russia;8. Department of Chemistry, Old Dominion University, Norfolk VA, USA;9. German Aerospace Center (DLR), Remote Sensing Technology Institute, Wessling, Germany;10. Laboratoire Interdisciplinaire Carnot de Bourgogne, Université de Bourgogne Franche-Comté, UMR 6303 CNRS, Dijon Cedex, France;11. University of Grenoble Alpes, CNRS, LIPhy, Grenoble F-38000, France;12. Laboratoire d’Etudes Spatiales et d’Instrumentation en Astrophysique, Paris Observatory, CNRS, PSL University, Sorbonne University, Paris, France;13. Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, USA;14. Division of Astronomy, California Institute of Technology, Pasadena, CA, USA;15. Department of Environmental, Earth & Atmospheric Sciences, University of Massachusetts, Lowell, MA, USA;p. Chemical Sciences Division, National Institute of Standards and Technology, Gaithersburg, MD, USA;q. Sorbonne Université, CNRS, De la MOlécule aux NAno-objets : Réactivité, Interactions et Spectroscopies, MONARIS, Paris 75005, France;r. Atmospheric and Environmental Research, Lexington MA, USA;s. Institut des Sciences Moléculaires d’Orsay, CNRS, Université Paris-Sud, Université Paris-Saclay, Orsay F-91405, France;t. Groupe de Spectrométrie Moléculaire et Atmosphérique, UMR CNRS 7331, BP 1039, Reims Cedex 2 F-51687, France;u. Department of Physics and Astronomy, University College London, London WC1E 6BT, UK;v. Laboratoire de Météorologie Dynamique/IPSL, CNRS, École polytechnique, Sorbonne Université, École normale supérieure, PSL Research University, Palaiseau F-91120, France;w. Dipartimento di Chimica Industriale “Toso Montanari”, Università di Bologna, Viale Risorgimento 4, Bologna 40136, Italy;x. Dipartimento di Chimica “Giacomo Ciamician”, Università di Bologna, Via F. Selmi 2, Bologna 40126, Italy;y. MTA-ELTE Complex Chemical Systems Research Group, Budapest, Hungary;z. Eötvös Loránd University, Institute of Chemistry, Budapest, Hungary;1. Department of Physics, Umeå University, Umeå 901?87, Sweden;2. Department of Physics and Astronomy, University of Leicester, Leicester, UK;3. University of Leicester, National Centre for Earth Observation, Leicester, UK;4. University of Leicester, Leicester Institute for Space and Earth Observation, Leicester, UK;5. Department of Physics, University of Oulu, FIN-90014, Finland;6. SETI Institute, Mountain View, CA 94043, USA;7. Planetary Systems Branch, Space Science and Astrobiology Division, NASA Ames Research Center, Moffett Field, CA 94035, USA;8. University of Colorado, Laboratory for Atmospheric and Space Physics, Boulder CO, USA;9. I. Physikalisches Institut, Universität zu Köln, Köln 50937, Germany;10. Department of Chemistry and Biochemistry, James Madison University, Harrisonburg, VA 22807, USA;11. Department of Chemistry, University of Adelaide, South Australia 5005, Australia;12. Laboratoire de Météorologie Dynamique/IPSL, CNRS, Sorbonne Université, École normale supérieure, PSL Research University, École polytechnique, Paris F-75005, France;13. Université de Paris and Univ Paris Est Creteil, CNRS, LISA, Paris F-75013, France;14. Institute of Applied Physics of Russian Academy of Sciences, Nizhny Novgorod, Russia;15. Leibniz Institute for Plasma Science and Technology (INP), Greifswald, Germany;P. Université Libre de Bruxelles, Spectroscopy, Quantum Chemistry and Atmospheric Remote Sensing (SQUARES), C.P. 160/09, Brussels B-1050, Belgium;Q. Obukhov Institute of Atmospheric Physics, Russian Academy of Sciences, Pyzhevsky per. 3, Moscow 119017, Russia;R. NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA;S. Research Unit Lasers and Spectroscopies (LLS), Institute of Life, Earth and Environment (ILEE), University of Namur (UNamur), Namur B-5000, Belgique;T. Royal Belgian Institute for Space Aeronomy (BIRA-IASB), Brussels 1180, Belgium;U. Center for Free-Electron Laser Science, Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, Hamburg 22607, Germany;V. Hamburg Center for Ultrafast Imaging, Universität Hamburg, Luruper Chaussee 149, Hamburg 22761, Germany;W. Golisano College of Computing and Information Sciences, Rochester Institute of Technology, Rochester, NY 14623, USA;X. Computer Science Department, State University of New York at Oswego, Oswego, NY 13126, USA
Abstract:Concentration measurements using femtosecond Raman Induced Polarization Spectroscopy (RIPS) are performed in binary gas mixtures CO2–N2 and CO2–N2O at room temperature. The principle of these measurements is based on the nonlinear rotational time response of each molecular component of the mixture. The general form of this molecular response is a series of periodic transients with a period related to the rotational constant Be. The relative strength of the individual responses allows an accurate determination of the concentration. Two techniques are presented using either two pulses (one pump and one probe) or three pulses (two pumps and one probe).
Keywords:
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