Analysis of self-broadened pure rotational and rovibrational lines of methyl chloride at room temperature

Abstract

To cite this version:Cédric Bray, David Jacquemart, Nelly Lacome, Mickael Guinet, Arnaud Cuisset, et al.. Analysis of self-broadened pure rotational and rovibrational lines of methyl chloride at room temperature. Journal of Quantitative Spectroscopy and Radiative Transfer, Elsevier, 2012, xxx (xx)

Line-shapes and broadenings of rotational transitions of CH335Cl in collision with He, Ar and Kr

“…As already observed for CH [3][4][5][6][7][8][9][10][11][12][13] and for other absorbing symmetric-top molecules such as CH 3 D [58], CH 3 F [59] or CH 3 CN [60], clear dependencies of collisional broadening on the quantum number K can be stated (see Fig. 3) using the qSDVP model for the He-, Ar-and Krinduced relaxation cases.…”

“…This work completes our previous measurements of the CH 3 Cl relaxation due to collisions with N 2 , O 2 , H 2 and CO 2 [9][10][11][12][13]. The chosen rare gases are particularly attractive because they have similar interaction potentials but very different atomic masses.…”

“…If β Gal is fixed to β kin , i.e. the upper limit inferred from the optical diffusion mechanism [23,24,40,46], the qSDG profile leads to γ 2 /γ 0 ¼ 0.112 (11). Using Eq.…”

“…Thus, many laboratory works have been dedicated to this molecule, namely to its rotational [2] and ro-vibrational spectra [3,4]. Many experiments have been also devoted to collisional relaxation, including line-broadening and line-shape studies, in the millimeter-submillimeter [5][6][7][8][9][10][11][12][13] and infrared [4,11,[14][15][16][17][18][19][20][21][22] domains.…”

Accurate ab initio vibrational energies of methyl chloride

“…We refer the reader to the most recent publications 8,[15][16][17][18][19][20][21][22][23][24][25][26][27][28][29][30][31][32] (and references therein) for a more complete overview.…”