Temperature Dependence of N2and O2Broadening Coefficients of Ozone

Temperature Dependence of Air-Broadening and Shift Coefficients of O3Lines in the ν1Band

“…The line-by-line comparison also shows 7,[13][14][15][16]25), and found them to be consistent with the band (10,12,19,22,25,26) all indicate that the N 2 -broadening coefficient is usually about 3% larger than the air-broadresults of the present study in the B-type n 1 band. Because of the lack of temperature-dependent air-broadening mea-ening value for the same line.…”

“…However, less than a third of these studies (7, spectrum was recorded. Then Ultra-Zero air (Alphagaz) was 9,10,17,19,21,23,24,26) have addressed the temperature added to achieve a total pressure of approximately 250 Torr. dependence of the broadening coefficients (none in the n 1 After recording the spectrum at this highest pressure, the O 3 -band), and none have looked at the temperature dependence air sample was partially pumped out to record the next specof the shifts.…”

Relaxation and Lineshape of the 500.4-GHz Line of Ozone Perturbed by N2 and O2

“…Most of the studies performed in the infrared region are related to A-type bands [such as 3 (8) and 1 ϩ 3 (15)] and the retrieved results are not exactly transposable to the microwave region for which transitions in the ground vibrational state are of B-type. Reported linewidths were deduced either from the analysis of the whole spectra band which generally retrieved smoothed values, or from direct measurements using Fourier transform spectrometer or diode-laser spectroscopy.…”

“…On the other hand, the broadening parameter ␥ 0 remains uncorrelated with the possible values of the (␥ 2 , ␤ 0 ) pairs according to Eq. [15], the corresponding ␥ 0 values being unchanged within half a standard deviation. In that way, all the experimental results obtained on the 500.4-GHz ozone line broadened by N 2 and O 2 were analyzed and the same qualitative correlation has been obtained for temperatures ranging from 250 to 300 K.…”

“…In view of the central importance of ozone in the Earth atmosphere, this molecule has been the subject of extensive studies, particularly in the millimeter-wave (1-3), submillimeter-wave (4), and infrared regions (5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15). As a result, line positions and intensities in these regions are well known for further calculations.…”