𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Calculated line broadening coefficients in the ν2 band of CH3D perturbed by helium

✍ Scribed by L. Féjard; T. Gabard; J.-P. Champion

Publisher
Elsevier Science
Year
2003
Tongue
English
Weight
622 KB
Volume
219
Category
Article
ISSN
0022-2852

No coin nor oath required. For personal study only.

✦ Synopsis

Line broadening coefficients have been calculated, at room temperature, for lines in the P and R branches of the m 2 band of monodeuterated methane. A properly symmetrized semiclassical model with parabolic relative trajectories has been used. Two interaction potential models have been considered. The first is a Lennard-Jones type atom-atom potential, while the second one was derived from ab initio calculations. The calculated line widths were compared to the available experimental data and a satisfactory agreement was found, although the model contains no other adjustable parameters than the four atomic Lennard-Jones ones. Nonetheless, failures of calculations have also been evidenced for the highest rotational quantum numbers.

📜 SIMILAR VOLUMES

Collisional-Broadening Coefficients in t
Collisional-Broadening Coefficients in the ν6Band of12CH3F Perturbed by Ar
✍ Muriel Lepère; Ghislain Blanquet; Jacques Walrand; Jean-Pierre Bouanich 📂 Article 📅 1998 🏛 Elsevier Science 🌐 English ⚖ 139 KB

Ar-broadening coefficients are measured for 29 lines of CH 3 F in the R Q 0 and R Q 6 branches of the 6 band, using a tunable diode-laser spectrometer. The collisional widths obtained by fitting Rautian profiles to the measured shapes of the lines are significantly larger, especially for the overlap

Diode-laser measurements and calculation
Diode-laser measurements and calculations of H2-broadening coefficients in the ν3 band of CH3D
✍ Christophe Lerot; Jacques Walrand; Ghislain Blanquet; Jean-Pierre Bouanich; Muri 📂 Article 📅 2003 🏛 Elsevier Science 🌐 English ⚖ 176 KB

Using a tunable diode-laser spectrometer, we have measured at room temperature the H 2 -broadening coefficients of 12 CH 3 D for 36 lines belonging to Q P and Q R branches in the m 3 parallel band. The recorded lines with J values ranging from 1 to 15 and K from 0 to 9 (K 6 J ) are located between 1

H2-broadening coefficients in the ν3 ban
H2-broadening coefficients in the ν3 band of CH3D at low temperatures
✍ Christophe Lerot; Jacques Walrand; Ghislain Blanquet; Jean-Pierre Bouanich; Muri 📂 Article 📅 2003 🏛 Elsevier Science 🌐 English ⚖ 164 KB

Using a diode-laser spectrometer, we have measured H 2 -broadening coefficients of CH 3 D at low temperatures (153.5, 183.5, and 223.5 K) for four lines in the m 3 band. The collisional widths are obtained by fitting each absorption line with three lineshape models: the Voigt, Rautian, and Galatry p

Diode-Laser Measurements of O2-Broadenin
Diode-Laser Measurements of O2-Broadening Coefficients in the ν3Band of CH3D
✍ Kathy Jacquiez; Ghislain Blanquet; Jacques Walrand; Jean-Pierre Bouanich 📂 Article 📅 1996 🏛 Elsevier Science 🌐 English ⚖ 144 KB

O 2 -broadening coefficients have been measured for 29 lines of 12 CH 3 D in the Q P and Q R branches of the n 3 band, using a tunable diode-laser spectrometer. The collisional widths obtained by fitting Rautian profiles to the measured shapes of the lines are significantly larger than those derived