کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5415721 1393772 2008 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Radiative transition parameters for the A1Σu+-X1Σg+ band system of 107,109Ag2
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
Radiative transition parameters for the A1Σu+-X1Σg+ band system of 107,109Ag2
چکیده انگلیسی
Radiative transition parameters are tabulated for the A1Σu+-X1Σg+ band system of the silver dimer 107,109Ag2 for bands involving vibrational levels up to v′=54 and v″=98, which amply covers the band transitions empirically studied in the seminal work of Kleman and Lindkvist [B. Kleman, S. Lindkvist, Arkiv för Fysik 9 (1955) 385-390]. The tabulated parameters include band-origin wavelengths and wavenumbers, Franck-Condon factors, r-centroids, electronic transition moments, Einstein coefficients (spontaneous emission rates) and absorption band oscillator strengths. Rydberg-Klein-Rees potential energy curves for both electronic states, based on the latest available spectroscopic constants, were calculated, and then used to solve the radial Schrödinger equation for the vibrational wave functions, ψv′ and ψv″. The constant electronic transition moment function Re(r)=3.05a.u. was fitted to previously reported relative absorption band strength measurements and the radiative lifetime of the A1Σu+ state. A numerical integration of ∫ψv′∗Re(r)ψv″dr was performed in computing the Einstein coefficients and absorption band oscillator strengths, and these were found to differ negligibly from similar results obtained with the r-centroid approximation, as expected for a constant Re(r) function.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Molecular Spectroscopy - Volume 248, Issue 2, April 2008, Pages 111-121
نویسندگان
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