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Your search keyword '"Kwabia-Tchana, Fridolin"' showing total 3 results
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3 results on '"Kwabia-Tchana, Fridolin"'

1. New vibrational assignments for the nu1 to nu17 vibrational modes of aziridine and first analysis of the high resolution infrared spectrum of aziridine between 720 cm-1 and 1050 cm-1

Author

Ngom, Malick, Kwabia-Tchana, Fridolin, Perrin, Agnes, Guillemin, Jean-Claude, FLAUD, Jean Marie, Demaison, Jean, Ngom, Abib, Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12), Laboratoire Interuniversitaire des Systèmes Atmosphériques (LISA (UMR_7583)), Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Institut des Sciences Chimiques de Rennes (ISCR), Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-Centre National de la Recherche Scientifique (CNRS)-Ecole Nationale Supérieure de Chimie de Rennes-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES), Laboratoire de Physique des Lasers, Atomes et Molécules - UMR 8523 (PhLAM), Université de Lille-Centre National de la Recherche Scientifique (CNRS), Université Cheikh Anta Diop [Dakar, Sénégal] (UCAD), Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Ecole Nationale Supérieure de Chimie de Rennes (ENSCR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées (INSA), Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées (INSA)-Ecole Nationale Supérieure de Chimie de Rennes (ENSCR)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Université de Rennes (UR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), and Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Ecole Nationale Supérieure de Chimie de Rennes (ENSCR)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Physical Sciences, [PHYS.COND]Physics [physics]/Condensed Matter [cond-mat]
Abstract

International audience; Fourier transform spectra of aziridine (C2H4NH) were recorded at high resolution (0.002 or 0.003 cm-1) in the 600-1750 and 1750-4000 cm-1 regions, using a Bruker IFS125HR spectrometer, located at the LISA facility in Creteil. In parallel, the harmonic force field of aziridine was evaluated analytically at the optimized geometry with second-order Møller-Plesset perturbation theory (MP2) together with the correlation-consistent polarized valence triple zeta basis sets cc-pVTZ. These ab initio predictions were used to perform consistent vibrational assignments for the nu1 to nu17 fundamental bands of aziridine observed in the infrared spectra recorded during this study. Finally, a first detailed rotational assignment was performed for two B-type bands located at 772.3571 cm-1 (nu10, CH2 rock) and 997.1592 cm-1 (nu8, NH bend) and for an A-type band located at 904.0429 cm-1 nu17 , ring deform). We noticed that the nu10 band is weakly perturbed, presumably because the v10 = 1 rotational levels are coupled with those of the v18 = 1 dark band located around 817 cm-1 through B-type and C-type Coriolis resonances.

Published
2011
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2. Performance of the AILES THz-Infrared Beamline on SOLEIL for High Resolution Spectroscopy

Author

Roy, Pascale, Brubach, Jean-Blaise, Rouzieres, Mathieu, Pirali, Olivier, Manceron, Laurent, Balcon, Didier, Kwabia-Tchana, Fridolin, Cuisset, Arnaud, Boudon, Vincent, Boudon, Vincent, Blanc - In-depth study of the methane absorption in Titan's atmosphere from calculations and experiments - - CH4@Titan2008 - ANR-08-BLAN-0254 - BLANC - VALID, Ligne AILES, Synchrotron SOLEIL, Laboratoire de Dynamique Interactions et Réactivité (LADIR), Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Interuniversitaire des Systèmes Atmosphériques (LISA (UMR_7583)), Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Photophysique Moléculaire (PPM), Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Interdisciplinaire Carnot de Bourgogne (LICB), Université de Bourgogne (UB)-Centre National de la Recherche Scientifique (CNRS), ANR-08-BLAN-2-321467,ANR-08-BLAN,CH4@Titan(2008), Laboratoire de Dynamique Interactions et Réactivité ( LADIR ), Université Pierre et Marie Curie - Paris 6 ( UPMC ) -Centre National de la Recherche Scientifique ( CNRS ), Laboratoire inter-universitaire des systèmes atmosphèriques ( LISA ), Institut national des sciences de l'Univers ( INSU - CNRS ) -Université Paris Diderot - Paris 7 ( UPD7 ) -Université Paris-Est Créteil Val-de-Marne - Paris 12 ( UPEC UP12 ) -Centre National de la Recherche Scientifique ( CNRS ), Laboratoire de Photophysique Moléculaire ( PPM ), Université Paris-Sud - Paris 11 ( UP11 ) -Centre National de la Recherche Scientifique ( CNRS ), Laboratoire Interdisciplinaire Carnot de Bourgogne ( LICB ), Université de Bourgogne ( UB ) -Centre National de la Recherche Scientifique ( CNRS ), ANR-08-BLAN-2-321467,ANR-08-BLAN,CH4@Titan ( 2008 ), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Université Paris-Sud - Paris 11 (UP11), ANR-08-BLAN-0254,CH4@Titan,In-depth study of the methane absorption in Titan's atmosphere from calculations and experiments(2008), and Laboratoire Interdisciplinaire Carnot de Bourgogne (ICB)

Subjects
[CHIM.THEO]Chemical Sciences/Theoretical and/or physical chemistry, [CHIM.THEO] Chemical Sciences/Theoretical and/or physical chemistry, [ CHIM.THEO ] Chemical Sciences/Theoretical and/or physical chemistry
Published
2009

3. A complete set of line parameters for CH3Br in the 10-microns spectral region

Author

Jacquemart, David, Kwabia Tchana, Fridolin, Lacome, Nelly, Kleiner, Isabelle, Laboratoire de Dynamique Interactions et Réactivité (LADIR), Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Interuniversitaire des Systèmes Atmosphériques (LISA (UMR_7583)), Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), and Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Vibration-rotation, [CHIM.THEO]Chemical Sciences/Theoretical and/or physical chemistry, Methyl bromide, Line list, Broadening coefficients, science direct, Fourier transform spectroscopy, Infrared, Line intensities
Abstract

International audience; Using FT spectra (Bruker IFS 120, unapodized FWHM resolution ̴ 0.001 cmˉ¹) of methyl bromide CH3Br, absolute line positions and intensities, as well as self- and N2-broadening coefficients have been measured for about 1200 lines, between 880 and 1050 cmˉ¹, in the band of both 12CH379Br and 12CH381Br isotopologues. An absolute wavenumber calibration has been performed using the frequencies of the band of NH3. A multispectrum fitting procedure has been used to retrieve simultaneously the line parameters from 6 experimental spectra recorded at different pressures of CH3Br and N2. Average absolute accuracies of the measurements have been estimated to be equal to +/- 0.0002 cmˉ¹ for line positions, to +/- 5% for line intensities, and to +/- 5-10% for broadening coefficients. A theoretical treatment of measured line positions permitted a prediction of positions and assignments for the whole 10-µm spectral region. Measured line intensities have been analyzed in order to predict the intensities for the whole band. The J and K dependences of the self- and N2-broadening coefficients have been observed and modeled. These measurements improve the precision of wavenumbers and line intensities previously obtained and lead us, for the first time, to a complete set of self- and N2-broadening coefficients for which clear J- and K-dependences have been observed and modeled. A complete line list containing line positions, intensities, self- and N2-broadening coefficients has then been generated for atmospheric purposes from 820 to 1120 cmˉ¹.

Published
2007
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