Other topics


Methane: CO2-broadening coefficients

Vispoel B, Fissiaux L, Lepère M. 2019. CO2-broadening coefficients in the ν3 fundamental band of methane. Journal of Molecular Spectroscopy. DOI: 10.1016/j.jms.2018.12.004.

The key goal of the “ExoMars Trace Gas Orbiter” mission is the detection of methane in the atmosphere of Mars, which could give indications for biological life on Mars. The Martian atmosphere consists to 96% of CO2 and thus, requires very special sets of parameters to enable accurate remote sensing. In particular, CO2-broadening coefficients are primordial. This study used tuneable diode-laser spectroscopy to measure the CO2-broadening coefficients for 11 lines in the ν3 band of methane. Such measurements are required for the studies of atmospheres containing a large amount of carbon dioxide.


Spectral lines of phosphine

Salem, J, Blanquet, G, Lepère, M, & Younes, R ben 2018, ‘H2-broadening, shifting and mixing coefficients of the doublets in the ν2 and ν4 bands of PH3 at room temperature’, Molecular Physics, vol. 0, no.0, pp. 1–10, DOI: 0.1080/00268976.2017.1423125

Molecular spectroscopy measures light that is emitted, absorbed, or scattered by materials or molecules to study, identify and quantify those materials. This study determines the doublet spectral lines of phosphine (PH3) when perturbed by hydrogen at room temperature. A collisional relaxation matrix groups the spectroscopic parameters: intensities, line widths, line shifts and line mixing parameters. The collisional process and the physical effects on the spectra of phosphine were measured using a tunable diode-laser spectrometer.


Le Cong, T, Doménech, JL, Lepère, M & Tran, H 2017, 'Molecular dynamic simulations of N2-broadened methane line shapes and comparison with experiments' The journal of chemical physics, vol 146, no. 9, 094305. DOI: 10.1063/1.4976978


Etienne T, Gattuso H, Michaux C, Monari A, Assfeld X, Perpète EA. 2016. Fluorene-imidazole dyes excited states from first-principles calculations—Topological insights. Theoretical Chemistry Accounts 135:111. DOI: 10.1007/s00214-016-1866-0.

Flot, JF, Debortoli, N, Hallet, B & Van Doninck, K 2016, 'Response to Signorovitch et al.' Current Biology , vol 26, no. 16, pp. R755. DOI: 10.1016/j.cub.2016.06.052

Leclere, L, Fransolet, M, Cambier, P, El Bkassiny, S, Tikad, A, Dieu, M, Vincent, SP, Van Cutsem, P & Michiels, C 2016, 'Identification of a cytotoxic molecule in heat-modified citrus pectin' Carbohydrate Polymers, vol 137, pp. 39-51. DOI: 10.1016/j.carbpol.2015.10.055

Le Cong, T, Fissiaux, L, Lepère, M & Tran, H 2016, 'Isolated line shape of methane with various collision partners' Journal of Quantitative Spectroscopy and Radiative Transfer, vol 185, pp. 27-36. DOI: 10.1016/j.jqsrt.2016.07.017

Salem, J, Blanquet, G, Lepère, M & Aroui, H 2016, 'H2 Line-mixing coefficients in the ν2 and ν4 bands of PH3 at low temperature' Journal of Quantitative Spectroscopy and Radiative Transfer, vol 173, pp. 34-39. DOI: 10.1016/j.jqsrt.2016.01.010

Sobreira Oliveira Junior E, Tang Y, van den Berg SJP, Lamers LPM, Kosten S. 2016. Rooting and plant density strongly determine greenhouse gas budget of water hyacinth (Eichhornia crassipes) mats. Biogeosciences Discussions:1–28. DOI: https://doi.org/10.5194/bg-2016-297