1991
DOI: 10.1080/00268979100101241
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Rotational relaxation rates for theJ= 0–1 transition of N2O by self-collisions and foreign gas collisions

Abstract: Time domain techniques using pulse methods in microwave spectroscopy have been employed to determine the population and coherence decay rates, l / T~ and l/T2, for the J = 0-1 rotational transition of ~sNzO. The pressure dependence of both relaxation rates has been investigated for the pure gas. Pressure broadening of the line (,-, l/Tz) has also been studied for mixtures with 02, N2, air and the rare gases He, Ne, Ar, Kr and Xe. The observed transient emission signals were analysed by the standard model of co… Show more

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Cited by 15 publications
(8 citation statements)
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“…4 along with the literature values for the m 3 and 2m 3 bands [4,6], and the pure rotational transitions [9][10][11][12][13][14]. Our results of the N 2 -and O 2 -broadening coefficients obtained for the 3m 3 band are in good agreement with the most of the literature values listed above.…”
Section: Comparison Of the Present Data With Other Datasupporting
confidence: 93%
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“…4 along with the literature values for the m 3 and 2m 3 bands [4,6], and the pure rotational transitions [9][10][11][12][13][14]. Our results of the N 2 -and O 2 -broadening coefficients obtained for the 3m 3 band are in good agreement with the most of the literature values listed above.…”
Section: Comparison Of the Present Data With Other Datasupporting
confidence: 93%
“…The values of c decrease with jmj: a trend observed by our previous measurement and other groups conducting broadening measurements [3][4][5][6][7][8][9][10][11][12][13][14]22]. Based on the impact approximation, c is expressed from the cross-sections in the terms of the Weiskopf radius, the number density of the collision partner, and the mean relative velocity of the collision partner [29].…”
Section: Broadening Coefficients At Room Temperature For Various Gasesmentioning
confidence: 93%
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“…This feature is particularly pronounced for a large ratio of the masses of perturbing and active gas molecules [15]. Although this effect has been observed previouly [16,17], it could be neglected in the case of the present study since the molecular mass of the buffer gas (N 2 ) is half the active gas one. Thus an exponential damping law was used for data analysis (after correcting for Doppler dephasing) and the corresponding rate constant (1/T 2 ) was deduced by least squares fitting of the time domain signal.…”
Section: Experimental and Analysismentioning
confidence: 69%
“…Such a speed dependence of the rotational relaxation for the J = 0-+1 transition of N 2 0 was described in [7] and [8]. For the investigated /-type doublet transitions no significant speed dependence of the rotational relaxation rates was observed.…”
Section: Pressure Broadeningmentioning
confidence: 88%