کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5416064 | 1393793 | 2006 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Infrared emission spectroscopy of the A4Φi-X4Îi and B4Î i-X4Îi transitions of CoS
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله

چکیده انگلیسی
The near-infrared emission spectrum of CoS has been recorded at a resolution of 0.04 cmâ1 using a Fourier transform spectrometer. Gas-phase CoS was produced by the reaction of cobalt vapor and CS2 vapor at about 3000 K in a carbon tube furnace. Two electronic transitions were observed for the first time in the 3200-6000 cmâ1 region and have been assigned to the A4Φi-X4Îi and B4Î i-X4Îi transitions. The 0-0 bands for all four sub-bands of the A4Φi-X4Îi transition, and the 0-0, 0-1, 1-0, and 1-1 bands for the 5/2-7/2 sub-band of the B4Î i-X4Îi transition were rotationally analyzed. Combined with the previous microwave data from the literature, the present data were fitted using the usual Hund's case (c) energy level expressions, and spectroscopic constants were obtained for the X4Îi, A4Φi, and B4Î i states of CoS. A Hund's case (a) fit was also carried out for the A4Φi-X4Îi transition. The presence of a low-lying 4Φi state for both CoS and CoO was not anticipated based on previous experimental and theoretical work.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Molecular Spectroscopy - Volume 236, Issue 2, April 2006, Pages 255-259
Journal: Journal of Molecular Spectroscopy - Volume 236, Issue 2, April 2006, Pages 255-259
نویسندگان
Shanshan Yu, Iouli E. Gordon, Phillip M. Sheridan, Peter F. Bernath,