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Noble Gas Induced Pressure Broadening in the ν3, ν2+ ν3− ν2, and 2ν2Bands of NO2

✍ Scribed by B. Sumpf; V.V. Pustogov; H.-D. Kronfeldt

Publisher
Elsevier Science
Year
1996
Tongue
English
Weight
130 KB
Volume
180
Category
Article
ISSN
0022-2852

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✦ Synopsis

Experimental results on the pressure broadening of NO 2 for collisions with the noble gases He, Ne, Ar, Kr, and Xe are presented. The broadening coefficients of six lines in the n 3 band near 1616.85 cm 01 with quantum numbers 2 £ N Љ £ 44, 1 £ K Љ a £ 5, and of seven lines in the n 2 / n 3 0 n 2 band with 29 £ N Љ £ 36, 0 £ K Љ a £ 5, and of one line from the 2n 2 band with N Љ Å 38, K Љ a Å 5 are measured using a tunable diode laser spectrometer. The experimental values for lines with smaller N Љ for the n 3 band extend previous experimental data to analyze the dependence of the broadening coefficients on the quantum numbers N Љ and K Љ a . Summarizing the available experimental data one can state that for collisions with helium, neon, and argon neither a clear N Љ nor a K Љ a dependence is observable. For the krypton and xenon broadening coefficient a weak decrease with increasing N Љ was found. Due to the restricted quantum number range of lines in the hot band and the overtone band the quantum number dependence could not be discussed. The range of values for the present measurements is consistent with previous measurements on the n 3 fundamental band.

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