کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5415845 | 1393780 | 2007 | 14 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Torsion-rotation global analysis and database for the CH318OH isotopomer of methanol
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Torsion-rotation global analysis and database for the CH318OH isotopomer of methanol Torsion-rotation global analysis and database for the CH318OH isotopomer of methanol](/preview/png/5415845.png)
چکیده انگلیسی
Fourier-transform far-infrared spectra of CH318OH in the 15-470 cmâ1 region have been analyzed by means of the Ritz assignment program. The far-infrared data have been combined with the literature microwave and millimeter-wave measurements in a full global fitting of the first three torsional states (νt = 0, 1, and 2) of the CH318OH ground vibrational state. The fitted dataset includes 550 microwave and millimeter-wave lines and more than 17 000 Fourier-transform transitions covering the quantum number ranges J ⩽ 30, K ⩽ 15, and νt ⩽ 2. With incorporation of 79 adjustable parameters, the global fit achieved convergence with an overall weighted standard deviation of 1.072, essentially to within the assigned measurement uncertainties of ±50 kHz for almost all of the microwave and millimeter-wave lines and ±6 MHz (0.0002 cmâ1) to ±15 MHz (0.0005 cmâ1) for the Fourier-transform far-infrared measurements. Based on the global fit results, a database has been compiled containing transition frequencies, quantum numbers, lower state energies and transition strengths. This database will provide support for present and future astronomical studies, such as the on-going Orion surveys in preparation for the launch of the Herschel Space Observatory, in identifying isotopic methanol contributions to interstellar spectra.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Molecular Spectroscopy - Volume 245, Issue 1, September 2007, Pages 7-20
Journal: Journal of Molecular Spectroscopy - Volume 245, Issue 1, September 2007, Pages 7-20
نویسندگان
J. Fisher, G. Paciga, Li-Hong Xu, S.B. Zhao, G. Moruzzi, R.M. Lees,