کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5430810 | 1397421 | 2007 | 13 صفحه PDF | دانلود رایگان |
The shift coefficients and line-mixing parameters of rovibrational-inversion transitions in the ν4 band of ammonia (NH3) perturbed by nitrogen (N2) have been measured at room temperature with a high-resolution Fourier transform spectrometer. The collisional shift and line mixing are obtained from the non-linear least-square multi-pressure fitting techniques. Comparison is made with the results of theoretical calculation based on semi-classical model extended to the case of symmetric top molecule with inversion motion. The shifts and the line-mixing parameters are calculated using, respectively the approach developed by Robert and Bonamy and the state-to-state cross-section. The agreement is satisfactory on the average. Good agreement is also obtained for line mixing with previous measurements.
Journal: Journal of Quantitative Spectroscopy and Radiative Transfer - Volume 107, Issue 3, October 2007, Pages 372-384