𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Hydrogen-Broadening Coefficients in the ν5 Band of Acetylene at Low Temperature

✍ Scribed by Jean-Pierre Bouanich; Jacques Walrand; Ghislain Blanquet

Publisher
Elsevier Science
Year
2002
Tongue
English
Weight
200 KB
Volume
216
Category
Article
ISSN
0022-2852

No coin nor oath required. For personal study only.

✦ Synopsis

H 2 -broadening coefficients have been measured for 29 lines of C 2 H 2 at 173.2 K in the P and R branches of the ν 5 fundamental band near 13.7 µm, using a tunable diode-laser spectrometer. These lines were individually fitted with a Voigt and a Rautian profile in order to determine the collisional widths. The resulting broadening coefficients are compared with values calculated from a semiclassical theory performed by considering, in addition to electrostatic interactions, the atom-atom Lennard-Jones model. A satisfactory agreement is obtained but only for low and medium J values. By comparing broadening coefficients at 297 and 173.2 K from a simple power law, the temperature dependence of these broadenings has been determined both experimentally and theoretically.

📜 SIMILAR VOLUMES

Nitrogen Broadening of Acetylene Lines i
Nitrogen Broadening of Acetylene Lines in the ν5Band at Low Temperature
✍ Jean-Pierre Bouanich; Ghislain Blanquet; Jean-Claude Populaire; Jacques Walrand 📂 Article 📅 1998 🏛 Elsevier Science 🌐 English ⚖ 223 KB

N 2 -broadening coefficients have been measured for 22 lines of C 2 H 2 at 173.4 K in the P and R branches of the n 5 band, using a tunable diode-laser spectrometer. The lines with J values ranging from 1 to 29 are located in the spectral range of 661-762 cm 01 . The collisional widths obtained by R

Oxygen Broadening of Acetylene Lines in
Oxygen Broadening of Acetylene Lines in the ν5Band at Low Temperature
✍ Jean-Pierre Bouanich; Ghislain Blanquet; Jacques Walrand 📂 Article 📅 1999 🏛 Elsevier Science 🌐 English ⚖ 147 KB

O 2 -broadening coefficients have been measured for 29 lines of C 2 H 2 at 173.2 K in the P and R branches of the 5 band near 14 m, using a tunable diode-laser spectrometer. The collisional widths obtained by Rautian profiles closely fitting the measured spectral shape of the lines are slightly larg

Diode-Laser Measurements of N2-Broadenin
Diode-Laser Measurements of N2-Broadening Coefficients in the ν2 Band of HCN at Low Temperature
✍ C. Schmidt; J.C. Populaire; J. Walrand; G. Blanquet; J.P. Bouanich 📂 Article 📅 1993 🏛 Elsevier Science 🌐 English ⚖ 429 KB

\(\mathrm{N}_{2}\)-broadening coefficients have been measured for 28 lines of \(\mathrm{HCN}\) at \(203 \mathrm{~K}\) in the \(P, Q\). and \(R\) branches of the \(\nu_{2}\) band, using a tunable diode-laser spectrometer. Semiclassical calculations of these collisional broadenings have been performed

Diode Laser Measurements of Self-Broaden
Diode Laser Measurements of Self-Broadening Coefficients in the v5-Band of C2H2 at Low Temperature
✍ D. Lambot; J.C. Populaire; J. Walrand; G. Blanquet; J.P. Bouanich 📂 Article 📅 1994 🏛 Elsevier Science 🌐 English ⚖ 450 KB

Collisional self-broadening coefficients for 21 lines in the \(P\) and \(R\) branches of the \(v_{5}\) band of \(\mathrm{C}_{2} \mathrm{H}_{2}\) at low temperature ( \(173 \mathrm{~K}\) ) have been measured using a tunable diode laser spectrometer and a low-temperature variable path length absorptio

H2-Broadening Coefficients in the ν4 Ban
H2-Broadening Coefficients in the ν4 Band of NH3
✍ J.-P Bouanich; H Aroui; S Nouri; A Picard-Bersellini 📂 Article 📅 2001 🏛 Elsevier Science 🌐 English ⚖ 157 KB

H 2 -broadening coefficients have been measured for 66 rovibrational lines of NH 3 at room temperature in the P P and R P branches of the ν 4 band in the range 1470-1600 cm -1 , using a high-resolution Fourier transform spectrometer. The collisional widths are obtained by fitting Voigt profiles to t