کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9589440 | 1393801 | 2005 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
N2-broadening coefficients in the ν2 and ν4 bands of PH3
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: N2-broadening coefficients in the ν2 and ν4 bands of PH3 N2-broadening coefficients in the ν2 and ν4 bands of PH3](/preview/png/9589440.png)
چکیده انگلیسی
N2-broadening coefficients are measured for 61 transitions of PH3 in the QR branch of the ν2 band and the PP, RP, SP, and PQ branches of the ν4 band, using a tunable diode-laser spectrometer. The recorded lines with J values ranging from 1 to 16 and K from 0 to 11 are located between 1008 and 1106 cmâ1. The collisional widths are determined by fitting each spectral line with a Voigt profile, a Rautian profile, and a speed-dependent Rautian profile. The latter models provide larger broadening coefficients than the Voigt model. These coefficients have also been calculated on the basis of a semiclassical model of interacting linear molecules by considering an atom-atom Lennard-Jones potential in addition to the electrostatic contributions. The theoretical results are in good agreement with the experimental data and reproduce the J dependence of the broadenings, but their decrease at high J values is overestimated for the QR (J, K) transitions.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Molecular Spectroscopy - Volume 232, Issue 1, July 2005, Pages 40-46
Journal: Journal of Molecular Spectroscopy - Volume 232, Issue 1, July 2005, Pages 40-46
نویسندگان
Jean-Pierre Bouanich, Jacques Walrand, Ghislain Blanquet,