✦ LIBER ✦

Absorption cross-sections and pressure broadening of rotational lines in the 3ν3 band of N2O determined by diode laser cavity ring-down spectroscopy

✍ Scribed by Alistair M Parkes; Alistair R Linsley; Andrew J Orr-Ewing

Publisher: Elsevier Science
Year: 2003
Tongue: English
Weight: 193 KB
Volume: 377
Category: Article
ISSN: 0009-2614
DOI: 10.1016/s0009-2614(03)01155-2

No coin nor oath required. For personal study only.

✦ Synopsis

Diode laser cavity ring-down spectroscopy (CRDS) has been used to measure rotational line intensities and air pressure broadening coefficients for the 3m 3 (N-N stretching) vibrational overtone band of N 2 O. The line intensity measurements are in quantitative agreement with previously reported Fourier transform spectroscopy results [J. Mol. Spectrosc. 197 (1999) 158]. The air pressure broadening coefficients increase from 0.086 AE 0.015 cm À1 atm À1 for the P ð34Þ line to 0.139 AE 0.010 cm À1 atm À1 for the P ð3Þ line, and are greater than values reported for other ro-vibrational bands of N 2 O observed at lower frequencies. The effects of pressure broadening on line-centre absorption cross-sections, and thus for the sensitivity of CRDS detection of N 2 O using narrow bandwidth near-IR lasers are quantified.

📜 SIMILAR VOLUMES

Nitrogen Broadening of Absorption Lines

Nitrogen Broadening of Absorption Lines in the ν1, ν2, and ν3Bands of H2S Determined by Applying an IR Diode Laser Spectrometer

✍ I. Meusel; B. Sumpf; H.-D. Kronfeldt 📂 Article 📅 1997 🏛 Elsevier Science 🌐 English ⚖ 118 KB

With an infrared diode laser spectrometer in pulse mode we studied the N2 broadening of H2S absorption lines in the nu1, nu2, and nu3 bands. Altogether 22 lines were investigated: 16 lines from the R branch of the nu1 band (3

Tunable diode laser measurements of N2-

Tunable diode laser measurements of N2- and O2-pressure broadening and pressure-induced shifts for 16O12C32S transitions in the ν3 band

✍ M.A. Koshelev; M.Yu. Tretyakov; R.M. Lees; L.-H. Xu 📂 Article 📅 2006 🏛 Elsevier Science 🌐 English ⚖ 381 KB

Determination of the Line-Shift and Line

Determination of the Line-Shift and Line-Broadening Coefficients in the ν3 Band of NO2 Perturbed by O2, N2, H2, D2, and CO2

✍ S. Bouazza; A. Kissel; B. Sumpf; H.-D. Kronfeldt 📂 Article 📅 1999 🏛 Elsevier Science 🌐 English ⚖ 182 KB

A high-resolution three-channel diode-laser spectrometer was used to record a large number of spectra with 14 N 16 O 2 and foreign gas pressures ranging from 0.1 to 0.4 and 20 to 150 Torr, respectively, at room temperature. The 6.2-m region corresponding to the 3 band of NO 2 was analyzed and the br