Diode-laser spectroscopy: Pressure dependence of N2-broadening coefficients of lines in the band of C2H2

O2-broadening coefficients of acetylene lines in the ν4+ν5 band at room temperature

“…Dicke narrowing and speed dependence). This behavior was also observed in many other studies of the line shape of C 2 H 2 [35,[37][38][39][40][41]. The results of O 2 -broadening coefficients of the C 2 H 2 transitions considered in this work, obtained using the Voigt profile as well as the RP, GP and qSDVP are then compared with previous studies, realized for other bands in Fig.…”

“…While a large number of studies devoted to the determination of spectroscopic parameters of C 2 H 2 used the VP, RP and GP [34][35][36][37][38][39][40][41], the SDVP was recently used to test the speed dependence effect on the collisional broadening and shifting parameters of acetylene lines [53][54][55]. In Refs.…”

“…The strengths and self-broadening coefficients of the transitions of this band were measured at room temperature [34,35]. Other studies were performed to obtain N 2 -, Ar-, He-, CO 2 -, and Xe-broadening coefficients at various temperatures [36][37][38][39][40][41]. To the best of our knowledge, no O 2 -broadening coefficients of C 2 H 2 in the m 4 + m 5 band have been reported yet.…”

Measurements of linestrengths, N2-, Ar-, He- and self-broadening coefficients of acetylene in the ν4+ν5 combination band using a cw quantum cascade laser

“…Individual line intensities of acetylene in the P and R branches of the ν 4 +ν 5 combination band have been measured at room temperature using Fourier Transform Infrared (FTIR) Spectroscopy in a number of studies [11][12][13][14]. Among recent measurements of spectroscopic parameters of acetylene in the ν 4 + ν 5 combination band, one should note the studies performed by Lepère's group [15][16][17][18][19][20].…”

“…Temperature dependent exponents of self-broadening coefficients of 7 transitions was measured in the temperature range of 173 -273 K [18]. Room temperature N 2 -broadening coefficients were measured for 12 transitions in the R branch of ν 4 + ν 5 band [19]. A similar study was carried out for 15 transitions in the temperature range of 173 -273 K to determine temperature dependent exponents of N 2 -broadening coefficients [16,17].…”