کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
11263128 | 1781699 | 2018 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Collisional-induced broadening and shift parameters of OH with Ar and N2 near 308.6â¯nm, measured at Tâ¯=â¯1300-2000â¯K and Pâ¯=â¯20-100â¯atm
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
طیف سنجی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The collision-induced broadening (2γOHA) and shift (δOHA) parameters of hydroxyl radical (OH) with two collisional partners-argon and nitrogen-and their associated temperature-dependence coefficients (nA and mA, respectively), have been measured in a series of shock tube experiments. The Q1(5) OH transition, a member of the A2Σ - X2Î (0, 0) rovibronic band with a line-center wavelength near 308.6â¯nm, represents an ideal target for quantitative spectroscopy in combustion applications, owing to its strength and degree of relative spectral isolation. Narrow-width tunable UV light was used to sample the Q1(5) lineshape profile across 8-10 wavelengths. The data were subsequently fit to the Voigt lineshape model at the fixed temperature, pressure and mixture composition. Measurements are presented for 2γOHAr, δOHAr, nAr, and mAr, recommended for Tâ¯=â¯1300-2000â¯K, as well as 2γOHN2, δOHN2, nN2, and mN2, recommended for Tâ¯=â¯1600-2000â¯K. The Q1(5) lineshape was also measured at pressures of 45 and 95â¯atm, for which application of the Voigt model yielded values of 2γOHAr and δOHAr that were consistent with lower-pressure measurements, supporting the validity of the lineshape model and, particularly, the diagnostic in question at such pressures.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Quantitative Spectroscopy and Radiative Transfer - Volume 221, December 2018, Pages 194-201
Journal: Journal of Quantitative Spectroscopy and Radiative Transfer - Volume 221, December 2018, Pages 194-201
نویسندگان
J.J. Girard, R. Choudhary, R.K. Hanson,