کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5416132 | 1393798 | 2006 | 22 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Line strengths of 12C16O2: 4550-7000Â cmâ1
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
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چکیده انگلیسی
Line positions and strengths of 12C16O2 were measured between 4550 and 7000 cmâ1 using near infrared absorption spectra recorded at 0.01-0.013 cmâ1 resolution with the McMath-Pierce Fourier transform spectrometer located at the National Solar Observatory at Kitt Peak, Arizona. These were retrieved from 42 laboratory spectra obtained at room temperature with five absorption cells having various optical path lengths (from 0.1 to 409 m) filled with natural and enriched samples of CO2 at pressures ranging from 2 to 581 Torr. In all, band strengths and Herman-Wallis-like F-factor coefficients were determined for 58 vibration-rotation bands from the least-squares fits of over 2100 unblended line strengths; strengths of 34 of these bands had not been previously reported. Band strengths in natural abundance generally ranged from 3.30 Ã 10â20 to 2.8 Ã 10â25 cmâ1/molecule cmâ2 at 296 K. It was found that the high J transitions (Jâ²Â ⩾ 61) of the 20012 â 00001 band centered at 4977.8347 cmâ1 are perturbed, affecting both measured positions and strengths. Two other interacting bands, 21113e â 01101e and 40002e â 01101e, were also analyzed using degenerate perturbation theory. Comparisons with corresponding values from the literature indicate that absolute accuracies better than 1% and precisions of 0.5% were achieved for the strongest bands.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Molecular Spectroscopy - Volume 239, Issue 2, October 2006, Pages 221-242
Journal: Journal of Molecular Spectroscopy - Volume 239, Issue 2, October 2006, Pages 221-242
نویسندگان
R.A. Toth, L.R. Brown, C.E. Miller, V. Malathy Devi, D. Chris Benner,