Self- and foreign-gas-broadened lineshapes in the ν1 band of NH3

N2-broadening coefficients in the ν2 and ν4 bands of PH3

“…The discrepancy for lines with K approaching or equal to J has been explained [31] by the assumption to consider only DK = 0 collision-induced transitions. Note that if the DK = ±3 transitions play a significant role in NH 3 [32,33], especially for the broadening coefficients of NH 3 -O 2 and NH 3 -N 2 [19], this influence is estimated to be weak for the studied lines (except maybe those with K = J), as in the case of CH 3 Cl-O 2 and CH 3 Cl-N 2 [34].…”

Dicke-narrowed spectral line shapes of CO in Ar: Experimental results and a revised interpretation

“…Only one study from that period concerns us here, however: the 1995 study of Duggan et al [2], which was the first to include speed dependence in an analysis of Dicke-narrowed line shapes. It has since been well established that a meaningful study of Dicke narrowing in CO-Ar, HF-Ar, and similar systems must account for speed dependence (see for example, [4,38,42,43,49,51,52]), and we therefore limit our discussion to speed-dependent analyses. To the best of our knowledge, [1][2][3][4][5][6][7]16,31,33,[36][37][38][39][40][41][42][43]49,[51][52][53][54][55][56][57][58][59][60][61][62] are the only studies that use a speed-dependent, Dicke-narrowed line shape model to analyze experimental data.…”

Fourier Transform Infrared Spectroscopy for the Measurement of Spectral Line Profiles

“…www.intechopen.com Contrary to the other symmetric top molecules, the broadening coefficients of NH 3 increase with K for a given J (Markov et al, 1993;Pine & Markov, 2004;Aroui et al, 2003Aroui et al, , 2009). This behavior is more pronounced for the small J values.…”

“…Some authors have discussed (Markov et al, 1993;Pine & Markov, 2004;Nemtchinov et al, 2004, Brown & Peterson, 1994Cottaz et al, 2001;Aroui et al, 2009) the vibrational dependence of broadening coefficients. In most cases the comparison of the measured results for different bands exhibits little vibrational dependence.…”