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5. Dr. Sophie Dixneuf

Dr. Sophie Dixneuf

Biography

2010-2013:        IRCSET - Marie Curie INSPIRE fellowship, Laser Spectroscopy Group, Physics department, University College Cork, Ireland, and Forschungszentrum Jülich GmbH, Institut für Energie und Klimaforschung, IEK-8: Troposphäre, Jülich, Germany. Project: Broadband cavity-enhanced absorption spectroscopy with long optical resonators for ultra-sensitive trace gas detection.

2008-2010:        IRCSET Post-doc, Laser Spectroscopy Group, Physics department, University College Cork, Ireland. Project: Broadband cavity-enhanced absorption spectroscopy for the characterization of local sea-to-air exchange processes.

2007-2008:        Marie Curie Host fellowship for the transfer of knowledge, Laser Spectroscopy Group, Physics department, University College Cork, Ireland. Project: Transfer of expertise in atmospheric monitoring of urban pollutants (TEAM-UP).

2006-2007:        Lecturer and researcher assistant, Physics department, University of Angers. Project: Light scattering spectroscopy by atomic gases.

Research Interests

Application and development of Cavity enhanced absorption methods for the spectroscopic detection and characterization of tropospherically relevant trace species of the atmosphere in the UV, visible and near infrared spectral regions.

Publications

• Wavenumber-resolved interaction-induced Raman scattering by a gaseous atomic mixture. S. Dixneuf, M. Chrysos and F. Rachet, J. Raman Spectrosc. 36, 139 (2005). (Link)
• Accurate pair-anisotropy models out of a set of input experimental moments via a novel non-linear inversion method. M. Chrysos and S. Dixneuf, J. Raman Spectrosc. 36, 158 (2005). (Link)
• Induced anisotropy of (Ar)₂: A state-of-the-art semiempirical model. M. Chrysos and S. Dixneuf, J. Chem. Phys. 122, 184315 (2005). (Link)
• On a singularity-free pair-polarizability anisotropy model for atomic gases. M. Chrysos, S. Dixneuf and F. Rachet, J. Chem. Phys. 124, 234303 (2006). (Link)
• The time-dependence of molecular iodine emission from Laminaria digitata. S. Dixneuf, A. A. Ruth, S. Vaughan, R. M. Varma and J. Orphal,Atmos. Chem. Phys. 9, 823-829(2009). (Link)
• Long optical cavities for open-path monitoring of atmospheric trace gases and aerosol extinction. R. M. Varma , D. Venables, A. A. Ruth, U. Heitmann, E. Schlosser and S. Dixneuf, Applied Optics 48 (4), B159-B171 (2009). (Link)
• Isotropic and anisotropic collision-induced Raman scattering by monoatomic gas mixtures: Ne-Ar. S. Dixneuf, M. Chrysos and F. Rachet, Phys. Rev. A 80, 022703 (2009). (Link)
• Anisotropic collision-induced Raman scattering by the Kr : Xe gas mixture. S. Dixneuf, M. Chrysos and F. Rachet, J. Chem. Phys. 131, 074304 (2009). (Link)
• Anisotropic collision-induced Raman scattering by Ne-Ne: Evidence for a nonsmooth spectral wing. M. Chrysos, S. Dixneuf and F. Rachet, Phys. Rev. A 80, 054701 (2009). (Link)
• Molecular iodine emission rates and photosynthetic performance of different thallus parts of Laminaria digitata (Phaeophyceae) during emersion. U. Nitschke, A. A. Ruth, S. Dixneuf* and D. B. Stengel, Planta 233, 737-748 (2011). (Link)
• The near infrared cavity-enhanced absorption spectrum of methyl cyanide. D. M. O'Leary, A. A. Ruth, S. Dixneuf, J. Orphal and R. Varma, J. Quant. Spectrosc. Radiat. Transf. 113, 1138-1147 (2012).

Professional Activity

• European Conference on Nonlinear Optical Spectroscopy (ECONOS 2004), April 4-6 2004, Erlangen, Germany.
   Frequency-resolved interaction-induced light scattering by a gaseous atomic mixture.
  Optimisation of a pair-anisotropy out of a set of experimental moments via a nonlinear inversion method.
• European Conference On Nonlinear Optical Spectroscopy (ECONOS 2005), April 11-12 2005, Oxford, England.
  Collision-induced light scattering bandshapes by the Kr-Xe gaseous mixture.
  Nonlinear inversion and the trace spectrum of (Ar)₂.
• Gordon Research Conference on Oscillations and Dynamic Instabilities in Chemical Systems, July 13-18 2008, Colby College, Waterville, Maine, USA.
  In situ detection of molecular iodine emission bursts from Laminaria digitata.
• Cavity-enhanced spectroscopy user meeting, June 26-29 2011, Kingston, Canada.
  The near-IR absorption spectra of gaseous trace constituents using Fourier-transform broadband cavity-enhanced absorption spectroscopy.

Teaching Activity

2006-2007:        Lecturer and researcher assistant, Physics department, University of Angers. Project: Light scattering spectroscopy by atomic gases.

Presentations

• 17th International Conference on Spectral Line Shapes (ICSLS), June 21-25 2004, Université Pierre et Marie Curie, Paris, France. Invited talk: Recent advances in the far wings of collision-induced scattering profiles by atomic gases.
• Deuxième Colloque Cinétique des Plasmas : Recherches et Applications (CIPRA2), 6-8 April 2005, Rouen, France. Spectres de diffusion de la lumière induits par le mélange atomique Ne-Ar.
• EGU General Assembly, April 20-24 2009, Vienna, Austria. Invited talk: Incoherent Broadband Cavity-Enhanced Absorption Spectroscopy for the time-dependent study of iodine emission from Laminaria Digitata.
• Symposium on Cavity Enhanced Absorption Spectroscopy at the International Symposium on Molecular Spectroscopy, 64^th Meeting, Ohio State University, Columbus, USA, 22-26 June 2009. Time-dependent emission of molecular iodine from brown seaweed: an application of incoherent broadband cavity-enhanced absorption spectroscopy.
• Liège colloquium Traces and Tracers, May 2-6 2011, Liège, Belgium. Molecular iodine emission rates of different thallus parts of Laminaria digitata determined using incoherent broadband cavity-enhanced absorption spectroscopy.
• Goldschmidt 2011, session Significance of Iodine in Biogeochemistry and the Environmental Sciences: Special Session Commemorating the Bicentennial of the Discovery of Iodine, August 15-19 2011, Prague, Czech Republic. Molecular iodine emission rates from Laminaria digitata as a function of algal part, irradiance and temperature.