186 research outputs found

    PRESSURE BROADENING OF O2O_{2} LINES IN THE 3μm3 \mu m REGION

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    1^{1} M. A. H. Smith, C. P. Rinsland, V. Malathy Devi, J.-M. Flaud, C. Camy-Peyret, and A. Barbe, J. Mol. Spectrosc., 139, 171-181 (1990). 2^{2} C. Camy-Peyret, J.-M. Flaud, M. A. H. Smith, C. P. Rinsland, V. Malathy Devi, J. J. Plateaux, and A. Barbe, J. Mol. Spectrosc., in press (1990).Author Institution: Atmospheric Sciences Division, Mall stop 401A, NASA Langley Research Center; Physics Department, College of William and Mary; Atmospheric Sciences Division, Mail stop 401A, NASA Langley Research CenterWe have recorded a series of high-resolution absorption spectra of ozone broadened by dry air, by N2N_{2}, and by O2O_{2} at room temperature using the McMath Fourier transform spectrometer at the National Solar Observatory on Kitt Peak. The spectra cover a wavenumber range from approximately 2600cm12600 cm^{-1} to 3600cm13600 cm^{-1} at a resolution of 0.01cm10.01 cm^{-1}. Using recently-determined line positions, assignments, and intensities1,2intensities^{1, 2}, we have analyzed these spectra to determine pressure broadening and line shift coefficients for a number of lines in the ν1+ν2+ν3\nu_{1}+\nu_{2}+\nu_{3} and 3ν33\nu_{3}, band systems

    Différentes sources d’inspiration dans l’oeuvre romanesque d’Ananda Devi

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    In the article the author analyses various sources of inspiration noticeable in the works of Ananda Devi. Considering the writer’s background, her native island of Mauritius, a multi-ethnic multi-lingual and multi-cultural island, various cultural inspirations are noticeable in her works. The author of this article focuses on the novelist’s prose and analyses the cultural references rooted in Indian, European, African and Creole cultures. The aim of this analysis is also to describe the intertextual relations that exist between some of Ananda Devi’s texts and the works of Jean-Marie Gustave Le Clézio, Tahar Ben Jelloun, Arthur Rimbaud or Malcolm de Chazal, T. S. Eliot, Toni Morrison and J. M. Coetzee. In the analysis, the author draws on the research of Homi Bhabha and Gérard Genette.In the article the author analyses various sources of inspiration noticeable in the works of Ananda Devi. Considering the writer’s background, her native island of Mauritius, a multi-ethnic multi-lingual and multi-cultural island, various cultural inspirations are noticeable in her works. The author of this article focuses on the novelist’s prose and analyses the cultural references rooted in Indian, European, African and Creole cultures. The aim of this analysis is also to describe the intertextual relations that exist between some of Ananda Devi’s texts and the works of Jean-Marie Gustave Le Clézio, Tahar Ben Jelloun, Arthur Rimbaud or Malcolm de Chazal, T. S. Eliot, Toni Morrison and J. M. Coetzee. In the analysis, the author draws on the research of Homi Bhabha and Gérard Genette

    Different Sources of Inspiration in the Works of Ananda Devi

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    In the article the author analyses various sources of inspiration noticeable in the works of Ananda Devi. Considering the writer’s background, her native island of Mauritius, a multi-ethnic multi-lingual and multi-cultural island, various cultural inspirations are noticeable in her works. The author of this article focuses on the novelist’s prose and analyses the cultural references rooted in Indian, European, African and Creole cultures. The aim of this analysis is also to describe the intertextual relations that exist between some of Ananda Devi’s texts and the works of Jean-Marie Gustave Le Clézio, Tahar Ben Jelloun, Arthur Rimbaud or Malcolm de Chazal, T. S. Eliot, Toni Morrison and J. M. Coetzee. In the analysis, the author draws on the research of Homi Bhabha and Gérard Genette

    INTENSITIES AND SELF-BROADENING OF OZONE NEAR 5μm5 \mu m

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    Address of Smith and Rinsland: Atmospheric Sciences Division, Mail Stop 401A, NASA Langley Research Center, Hampton, Virginia, 23665-5225. Address of Malathy Devi and Benner: Physics Depeartment, College of William and Mary, Williamsburg, Virgiania, 23185.Author Institution:A series of high-resolution (0.005cm1)(0.005 cm^{-1}) spectra of pure ozone have been recorded at room temperature using the Fourier transform spectrometer at the National Solar Observatory on Kitt Peak. Each spectrum covers the entire region from 1100cm11100 cm^{-1} to 2600cm12600 cm^{-1} and has a signal-to-noise ratio of at least 150:1. Initial analyses of these spectra in the 5μm5 \mu m region have resulted in intensities for a number of lines in the ν1+ν3,2ν3\nu_{1} + \nu_{3}, 2\nu_{3}, and ν1+ν2+ν3ν2\nu_{1} + \nu_{2} + \nu_{3} - \nu_{2} bands, as well as self-broadened halfwidths in the ν1+ν3\nu_{1} + \nu_{3} bands. These preliminary reults are in good agreement with previous measurements and calculations

    ABSOLUTE INTENSITIES OF O3O_{3} LINES IN THE 9-11 μm\mu m REGION

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    h^{h}M. A. Smith, C. P. Rinsland, V. Malathy Devi and D. Chris Benner, 51st International Symposium on Molecular Spectroscopy, Paper MH14 (1996). i^{i}H. M. Pickett, D.B. Peterson, and J.S. Margolis, J. Geophys. Res 97,20,787-20793 (1992). j^{j}D. Chris Benner, C.P. Rinsland, V. Malathy Devi, M.A.H. Smith and D. Atkins, JQSRT 53, 705-721(1995). k^{k}L. S. Rothman, R.R. Gamache, R. H. Tipping, C.P. Rinsland, M.A.H. Smith, D.C. Benner, V. Malathy Devi, J.M. Flaud, C. Camy-Peyrer, A. Perrin, A. Goldman, S.T. Massiee, L.R. Brown, and R.A. Toth, JQSRT 48,469-507(1992); L.S. Rothman et. al., in preparation.(1997). l^{l}M.R. DeBacker and D. Courtois, 50th International Symposium on Molecular Spectroscopy, Paper RA06 (1995). m^{m}M.R. DeBacker, B. Parvitte, V. Zeninari, and D. Courtois, JQRST 54, 1009-1018(1995).Author Institution: Atmospheric Sciences Division, NASA Langley Research Center; Department of Physics, The College of William and MaryWe have extended our previous analysis of high-resolution absorption spectra of ozonehozone^{h} to determine absolute intensities of nearly 200 16O3{^{16}}O_{3} lines in the 9-11 μm\mu m region. The spectra were recorded at room temperature using the Fourier transform spectrometer at the McMath-Pierce facility of the National Solar Observatory at Kitt Peak, covering the 8001400cm1800-1400 cm^{-1} region at 0.0027cm10.0027 cm^{-1} resolution. The ozone samples were contained in a glass cell having crossed IR-transmitting and UV-transmitting paths approximately 10 cm in each direction. A 254 nm UV-absorption monitor of the same design as Pickett etal.iet al.^{i} was used to measure the ozone partial pressures, which were kept at approximately 0.3 to 0.5 Torr to prevent the appearance of saturated lines. Only spectra for which the ozone partial pressure varied by <1.0< 1.0% during the recording time were selected for analysis. Using our multispectrum nonlinear least-squares procedure,jprocedure,^{j} we have fit four spectra simultaneously to determine intensities for numerous lines in both the P and R branches of the ν3\nu_{3} fundamental band and several lines in the ν1\nu_{1} band. On average, our measured intensities are only 1% larger than the values on the current HITRAN compilationkcompilation^{k}. Our measurement set includes 44 ν3\nu_{3} lines in common with other recent experimental studies.blmstudies.^{blm} Comparison of these various measurements shows excellent agreement for a few lines and adequate agreement (considering all possible sources of uncertainty and systematic errors) for the others

    PRESSURE BROADENING AND SHIFTS OF O3O_{3} LINES IN THE 3-μm\mu_{m} REGION

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    1. M. A. H. Smith, C.P. Rinsland, V. Malathy Devi, D. Chirs Benner, and K. B. Thakur, J. Opt. Soc. Am. B, 5, 585-592(1998). 2. A. Barbe, S. Bouazza, and J. J. Plateaux, Appl. Opt., 30, 2431-2436(1991).Author Institution: Atmospheric Sciences Division, NASA Langley Research Center; Department of Physics The College of William and Mary, Williamsburg, VA 23187-8795; Department of Mathematics and Computer Science, Western Carolina UniversityWe have recorded high-resolution absorption spectra of ozone broadened by dry air, by N2N_{2} or by O2O_{2} using the McMath Fourier transform spectrometer at the National Solar Observatory on Kitt Peak. The spectra were recorded at room temperature, covering the region from approximately 2600cm12600 cm^{-1} to 3600cm13600 cm^{-1} at a resolution of 0.01cm10.01 cm^{-1}. Broadening gas pressures varied from approximately 100 to 400 Torr. From these spectra we have determined pressure broadening and line shift coefficients for over 200 lines in the ν1+ν2+ν3\nu_{1} + \nu_{2}+\nu_{3} and 3v3v_{3} bands. The halfwidth values obtained in these bands are similar to those obtained in the ν1\nu_{1} and ν3\nu_{3} bands, indicating that there is little vibrational dependence of the Lorentz broadening coefficient for ozone broadened by air, N2N_{2} or O2O_{2}. However, the pressure line induced line shifts determined in the 3-μ\mum bands are larger than those observed in the 4.8μ4.8-\mum and 9μ9-\mum regions12regions^{1-2}

    DIODE LASER SPECTRA OF CH3I,NO2CH_{3}I, NO_{2} AND OTHER MOLECULES AT 12-14 μ\mum

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    1^{1} P. P. Das, V. Malathy Devi and K. Narahari Rao, J. Mol. Spectrosc. (in press). 2^{2} J. M. Flaud, C. Camy-Peyret, V. Malathy Devi P. P. Das. K. Narahari Rao, J. Mol. Spectrosc. (in press).Author Institution:Perpendicular bands of several symmetric and near symmetric top molecules like CH3I,CH2DI,NO2CH_{3}I, CH_{2}DI, NO_{2}, etc., have been studied using a tunable diode laser spectrometer in the 1214 μm12-14\ \mu m region. The limited tunability of the diode laser is compensated by its high resolution and sensitivity so that from the analysis of the Q branches alone precise band centers and rotational constants could be determined. It is known from microwave studies that CH3ICH_{3}I has a large nuclear quadrupole coupling constant. The nuclear spin (I) of 5/235/2^{3} of iodine combines with J and splits the rotational levels into 2I + 1 = 6 components for J>2 > 2. Selection rules show that for JK,a PQ(J,K) \simeq K, a\ ^{P}Q(J,K) line of the ν6\nu_{6} band is split into several components which should be resolved under Doppler-limited resolution. Such splittings were seen in the spectrum of CH3I.1CH_{3}I.^{1} The effect of diode laser line width on the observed spectrum will also be discussed. In the case of CH2DICH_{2}DI the presence of a single D atom removes the degeneracy of ν6\nu_{6} in CH3ICH_{3}I and splits it into ν6\nu_{6}^{\prime} and ν6\nu_{6}^{\prime}, Although the asymmetry is extremely small (x = -0.9983), spectacular asymmetry effects were observed in the ν6\nu^{\prime\prime}6 band for K=0,1,2K^{\prime} = 0, 1, 2 and 3. A sixth order Watson reduced Hamiltonian was used to explain these effects. In NO2NO_{2}, the electron spin couples with the rotational angular momentum J of the molecule and splits it into two components Such, splittings have been observed in the ν2\nu_{2} band spectrum of NO2NO_{2} from which accurate spin-rotation interaction constants have been $determined.^{2}

    BROADENING AND SHIFT COEFFICIENTS IN THE ν2\nu_{2} BAND OF HCN

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    a^{a}D. Chris Benner, C. P. Rinsland, V. Malathy Devi, M. A. H. Smith and D. Atkins, JQSRT 53, 705-721 (1995). b^{b}V. Malathy Devi et al., JQSRT, in press (2004). c^{c}V. Malathy Devi et al., JQSRT 82, 319-341 (2003); C. P. Rinsland et al., JQSRT 82, 343-362 (2003).Author Institution: Atmospheric Sciences, NASA Langley Research Center; Department of Physics, The College of William and Mary; Department of Physics, Pacific Northwest National LaboratoryInfrared spectra of HCN in the 14μm14 \mu m region were recorded at 0.008 and 0.005cm10.005 cm^{-1} resolution using two different Fourier transform spectrometers (FTS), the McMath-Pierce FTS at the National Solar Observatory on Kitt Peak and the Bruker IFS 120 HR FTS at the Pacific Northwest National Laboratory. Spectra were recorded with pure HCN as well as mixtures of HCN in air at temperatures between +26C+26^{\circ} C and 60C-60^{\circ} C. Using our multispectrum technique,a^{a} we fit over 30 spectra simultaneously to determine self-broadening and shift coefficients and air-broadening and shift coefficients and their temperature dependences for lines belonging to the H12C14Nν2H^{12}C^{14}N \nu_{2} band centered near 712cm1712 cm^{-1}. In addition, we were able to determine broadening and shift parameters for some lines belonging to hot bands and isotopic bands. The results will be compared with our previous measurements in the 2ν2bandb2\nu_{2} band^{b} and in the ν1bandc\nu_{1} band^{c} and with other measurements available in the literature

    Ananda Devi, une poétique de la transgression

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    The aim of the article is to reflect on the phenomenon of transgression ubiquitous in Ananda Devi’s work. From her first novels to her most recent ones, the writer constantly constructs characters who undertake transgressions. This applies equally to female and male characters. Nevertheless, the reader is likely to have a different evaluation of the negative behaviour of men towards women, who break established rules as part of their rebellion against the dictates of the patriarchy, often transforming themselves from victim to executioner. The aim of the analysis is to describe the various forms of transgression, from the most trivial to the most severe. Examining this issue, the author of the article draws on the work of G. Bataille and M. Foucault.Dans le présent texte, l’auteure se penche sur le phénomène de la transgression omniprésente dans l’œuvre romanesque d’Ananda Devi. À partir de ses premiers romans jusqu’au dernier, l’écrivaine présente les personnages commettant une transgression. Cela concerne ses personnages féminins et masculins. Cependant, le lecteur évalue plutôt différemment le comportement des héros deviens par rapport à celui de ses héroïnes qui en général brisent des normes dans le cadre d’une révolte contre le diktat du patriarcat. Elles se transforment souvent de victime en bourreau L’objectif de cette analyse est de décrire différentes formes de transgressions, des plus légères aux plus graves. Dans son étude, l’auteure s’appuiera entre autres sur les travaux de G. Batailles et de M. Foucault.The aim of the article is to reflect on the phenomenon of transgression ubiquitous in Ananda Devi’s work. From her first novels to her most recent ones, the writer constantly constructs characters who undertake transgressions. This applies equally to female and male characters. Nevertheless, the reader is likely to have a different evaluation of the negative behaviour of men towards women, who break established rules as part of their rebellion against the dictates of the patriarchy, often transforming themselves from victim to executioner. The aim of the analysis is to describe the various forms of transgression, from the most trivial to the most severe. Examining this issue, the author of the article draws on the work of G. Bataille and M. Foucault

    SELF-AND H2H_{2}-BROADENING AND SHIFT COEFFICIENTS IN THE 202 \leftarrow 0 BAND OF 12C16O^{12}C^{16}O: REVISITED

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    a^{a}D. Chris Benner, C. P. Rinsland, V. Malathy Devi, M. A. H. Smith and D. Atkins, JQSRT 53, 705-721 (1995). b^{b}V. Malathy Devi, D. Chris Benner, M. A. H. Smith, C. P. Rinsland and A. W. Mantz, JQSRT 75, 455-471 (2002).Author Institution: Department of Physics, The College of William and Mary; Department of Physics, The University of Lethbridge; Atmospheric Sciences, NASA Lang-ley Research Center; Department of Physics, Astronomy and Geophysics, Connecticut CollegeRoom temperature values for self-broadened and hydrogen-broadened Lorentz half width coefficients, and self and hydrogen pressure-induced shift coefficients have been measured for transitions with rotational quantum number index m ranging from -24 to +24 in the 202 \leftarrow 0 band of 12C16O^{12}C^{16}O. The spectra were recorded with the McMath-Pierce Fourier transform spectrometer located at the National Solar Observatory on Kitt Peak. The analysis was performed using a multispectrum nonlinear least squares techniqueatechnique^{a} modified to constrain the Lorentz widths in the P and R branches to be identical for the same m|m| value. We have compared the present results with our previous measurements made with the same spectrometerbspectrometer^{b} and with other measurements published recently
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