کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7846481 | 1508612 | 2017 | 63 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Room temperature self- and H2-broadened line parameters of carbon monoxide in the first overtone band: Theoretical and revised experimental results
ترجمه فارسی عنوان
پارامترهای خطی پارامترهای خط مونوکسید کربن در دمای اتاق در گروه بار اول: نتایج تجربی نظری و تجدید نظر شده
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
طیف سنجی
چکیده انگلیسی
Lorentz self- and H2-broadened half-width and pressure-induced shift coefficients, line mixing coefficients as well as line center positions and intensities were obtained using a nonlinear least square fitting technique for 48 (P(24) to R(23)) ro-vibrational transitions belonging to the first overtone (2â0) band of 12C16O at room temperature. All spectra in the 4146 to 4332 cmâ1 spectral interval were fitted simultaneously employing four line shape functions: the Voigt, Speed Dependent Voigt, Rautian and Speed Dependent Rautian profiles. The collisional line mixing effect has been observed and investigated as an asymmetry in the analyzed line profiles. A semi-empirical Exponential Power Gap Law method was used to estimate the self- and H2-broadening coefficients and the collisional line mixing parameters. Additionally, a classical approach was applied to calculate the half-width coefficients of transitions in the 2â0 band for carbon monoxide broadened by H2 and for pure CO. The classical approach based on a simple computational method, ensures the molecular motion is correctly characterized in 3 dimensions. The calculations used vibrationally independent intermolecular interaction potentials. The variation of CO half-width coefficients with rotational quantum number Jâ¤24 was computed and compared with measurements. The agreement between the theoretical broadening coefficients is better for pure CO rather than for the CO-H2 system.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Quantitative Spectroscopy and Radiative Transfer - Volume 203, December 2017, Pages 309-324
Journal: Journal of Quantitative Spectroscopy and Radiative Transfer - Volume 203, December 2017, Pages 309-324
نویسندگان
Koorosh Esteki, Adriana Predoi-Cross, Chad Povey, Sergey Ivanov, Aziz Ghoufi, Franck Thibault, Mary Ann H. Smith,