๐”– Bobbio Scriptorium
โœฆ   LIBER   โœฆ

Pressure Broadening of the Rotational Line of Oxygen at 425 GHz

โœ Scribed by A.F Krupnov; G.Yu Golubiatnikov; V.N Markov; D.A Sergeev

Publisher
Elsevier Science
Year
2002
Tongue
English
Weight
76 KB
Volume
215
Category
Article
ISSN
0022-2852

No coin nor oath required. For personal study only.

โœฆ Synopsis

The pressure broadening of the 16 O 16 O rotational line (N , J ) = (3, 2)-(1, 2) at 425 GHz by oxygen and nitrogen perturbers at room temperatures have been reported. A spectrometer with BWO and acoustic detector was employed with a double magnetically shielded cell. The signal-to-noise ratio on the line was about 200-250 for self-broadening and about 100 for broadening by N 2 measurements. The pressure-broadening parameters of the line at room temperature (23 ยฑ 0.5 โ€ข C) were measured as 2.19 ยฑ 0.01 MHz/Torr for self-broadening and 2.215 ยฑ 0.02 MHz/Torr for broadening by nitrogen. Values of these parameters significantly (by about 25%) differ from ones previously measured by H. M. Pickett, E. A. Cohen, and D. E. Brinza, (Astrophys. J. 248, L49-L51 (1981)). The results of the present work show the necessity for correction of broadening parameters of this line for the purpose of Earth atmosphere remote sensing. The central frequency of the transition (N , J ) = (3, 2)-(1, 2) was measured as 424 763.023 ยฑ 0.020 MHz.

๐Ÿ“œ SIMILAR VOLUMES

Real Atmosphere Laboratory Measurements
Real Atmosphere Laboratory Measurements of the 118-GHz Oxygen Line: Shape, Shift, and Broadening of the Line
โœ M.Yu. Tretyakov; V.V. Parshin; V.N. Shanin; S.E. Myasnikova; M.A. Koshelev; A.F. ๐Ÿ“‚ Article ๐Ÿ“… 2001 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 41 KB

For the first time the 118-GHz line of the oxygen molecule was investigated in the laboratory under a real atmosphere. The experiment was carried out by modern resonator spectroscopy methods on the laboratory air at atmospheric pressure. The shape of the line under the real atmosphere was found to f

Oxygen Broadening of Acetylene Lines in
Oxygen Broadening of Acetylene Lines in the ฮฝ5Band at Low Temperature
โœ Jean-Pierre Bouanich; Ghislain Blanquet; Jacques Walrand ๐Ÿ“‚ Article ๐Ÿ“… 1999 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 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

Pressure Shifts and Pressure Broadening
Pressure Shifts and Pressure Broadening of the B and ฮณ Bands of Oxygen
โœ John E Barnes; Paul B Hays ๐Ÿ“‚ Article ๐Ÿ“… 2002 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 112 KB

Measurements of pressure shift and pressure broadening in molecular oxygen have been made for rotational transitions in the B (1โ†0) and ฮณ (2โ†0) vibrational bands of the b 1 + g โ† X 3 - g visible electronic transition. The absorption features were measured simultaneously in two cells by photoacoustic

Foreign-gas pressure broadening of the p
Foreign-gas pressure broadening of the pure rotational Raman spectrum of H2
โœ E. Dayan; J. P. Viennot ๐Ÿ“‚ Article ๐Ÿ“… 1980 ๐Ÿ› John Wiley and Sons ๐ŸŒ English โš– 238 KB

## Abstract Measurements of the width of the rotational Raman line, at 595 cm^โˆ’1^, of hydrogen in mixtures with N~2~, C~2~H~4~ and CO~2~ are reported at a series of perturbing gas pressures, up to 400 bar. The broadening is found to be characteristic of the foreign gas and is interpreted in term of