✦ LIBER ✦

Temperature Dependence of Nitrogen Broadening of the NO Fundamental Vibrational Band

✍ Scribed by M.N. Spencer; C. Chackerian Jr.; L.P. Giver; L.R. Brown

Publisher: Elsevier Science
Year: 1997
Tongue: English
Weight: 316 KB
Volume: 181
Category: Article
ISSN: 0022-2852
DOI: 10.1006/jmsp.1996.7169

No coin nor oath required. For personal study only.

✦ Synopsis

We report measured N 2 -broadening coefficients, g(T), of approximately 70 transitions of the ground electronic state fundamental vibration-rotation band (£ Å 1 R 0) of NO at 183, 213, and 296 K. In addition to the broadening asymmetry previously observed between the 2 P 3/2 and 2 P 1/2 state transitions, we also observed for most of the 2 P 1/2 transitions an increased broadening of the f-l over the e-l components. The temperature dependence of the broadening coefficients was characterized by the power law, g T Å g 296 (296/T) n . Our g 296 values are on average systematically smaller than those of J. Ballard et al. [J. Mol. Spectrosc. 127, 70-82 (1988)] by 4.7%. We obtained an average n of 0.708 { 0.059 for the 2 P 1/2 subband and 0.699 { 0.067 for the 2 P 3/2 subband. These average n values fortuitously agree very well with the average n values derived from measurements of NO-N 2 broadening cited above (n Å 0.70) since individual differences are as large as 15%. ᭧ 1997 Academic Press at 300 K to calibrate their Anderson-type (7) calculations of air broadening carried out at 300, 250, and 200 K. Falcone

📜 SIMILAR VOLUMES

The NO Vibrational Fundamental Band: O2-

The NO Vibrational Fundamental Band: O2-Broadening Coefficients

✍ C. Chackerian Jr.; R.S. Freedman; L.P. Giver; L.R. Brown 📂 Article 📅 1998 🏛 Elsevier Science 🌐 English ⚖ 144 KB

The first measurements of O 2 broadening of NO lines is reported. For the NO fundamental vibration-rotation band, polynomial representations for this broadening at 299 K are given for ⍀ ϭ 3 2 and ⍀ ϭ 1 2 e and f transitions, respectively: f ͑|m|͒ ϭ 0.06515 Ϫ 0.00381|m| ϩ 0.000271|m| 2 Ϫ 0.00000665

Rare Gas Pressure Broadening of the NO F

Rare Gas Pressure Broadening of the NO Fundamental Vibrational Band

✍ Robert S. Pope; Paul J. Wolf 📂 Article 📅 2001 🏛 Elsevier Science 🌐 English ⚖ 162 KB

Pressure broadening of rotational transitions in the nitric oxide fundamental band was studied using Fourier transform spectroscopy. Rotational level dependent broadening coefficients were determined for both the 2 1/2 and 2 3/2 substates at 300 K using the five noble gases as the broadening species

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

Line Broadening and the Temperature Expo

Line Broadening and the Temperature Exponent of the Fundamental Band in CO–N2 Mixtures

✍ Adriana Predoi-Cross; Caiyan Luo; P.M. Sinclair; J.R. Drummond; A.D. May 📂 Article 📅 1999 🏛 Elsevier Science 🌐 English ⚖ 244 KB

We have measured the width, Gamma, of many P and R lines of the fundamental vibration-rotation band of CO perturbed by N(2) at 348 K and pressures of about 50 kPa. We have also extended the measurements made earlier at room temperature. The broadening coefficients, gamma = Gamma/pressure, were obtai

Nitrogen-Broadening and Nitrogen-Shiftin

Nitrogen-Broadening and Nitrogen-Shifting Coefficients in the ν3 Band of N2O

✍ L. Regalia; A. Barbe; J.J. Plateaux; V. Dana; J.Y. Mandin; M.Y. Allout 📂 Article 📅 1995 🏛 Elsevier Science 🌐 English ⚖ 158 KB

Self-, Air-, and Nitrogen-Broadening in

Self-, Air-, and Nitrogen-Broadening in the ν1Band of SO2

✍ B. Sumpf; O. Fleischmann; H.-D. Kronfeldt 📂 Article 📅 1996 🏛 Elsevier Science 🌐 English ⚖ 187 KB

The collisional line broadening of SO 2 transitions in the n 1 band was measured with SO 2 , air, and nitrogen as perturbers by applying a diode laser spectrometer in pulse mode. Eighteen lines from the P branch (5 £ JЉ £ 44, 0 £ KЉ a £ 20), eight lines from the Q branch (10 £ JЉ £ 40, 1 £ KЉ a £ 23