Isotope Effects on Franck—Condon Factors. VII. Vibrational Intensity Distribution in the H2 Lyman, H2 Werner, O2 Schumann—Runge, N2 First Positive, N2 Vegard—Kaplan, and LiH (A—X) Systems Based on RKR Potentials

1967 ◽  
Vol 46 (7) ◽  
pp. 2684-2689 ◽  
Author(s):  
M. Halmann ◽  
I. Laulicht
1993 ◽  
Vol 71 (10) ◽  
pp. 1622-1626 ◽  
Author(s):  
Walter J. Balfour ◽  
Belvai J. Shetty

A new group of bands has been observed in emission in the 500–600 nm region under conditions that generate known systems of GeS. It has been deduced from the appearance and position of the bands, and from their intensity distribution, that these bands constitute the long-wavelength component of the E1Σ+–X1Σ+ system of GeS, which gives rise to strong absorption and emission in the ultraviolet. E–X Franck–Condon factors have been estimated.


The Fano-Mies theory of configuration interaction is applied to the photoionization of diatomic molecules, yielding an expression which gives the relative intensity of vibrational peaks in photoelectron spectra when one or more autoionizing states are in the vicinity of the excitation energy. In some cases the vibrational intensity distribution depends only on Franck-Condon factors connecting autoionizing and final states. Illustrative calculations for O2 show the transition from this limit to the limit of direct photoionization as the line profile index decreases.


1970 ◽  
Vol 25 (5) ◽  
pp. 496-499 ◽  
Author(s):  
G. Heinrich ◽  
G. Holzer ◽  
H. Blume ◽  
D. Schulte-Frohlinde

The lowest triplet states of diphenylpolyenes and of deuterated stilbenes were observed by means of photoflash asportion spectroscopy. The diphenylpolyenes do not show phosphorescence. The triplet lifetime is strongly dependent on triplet energy. This is consistent with the known influence of Franck-Condon factors. The triplet lifetime of partially deuterated stilbenes depends on the number and the position of the deuterium atoms. The effect of olefinic monodeuteration on the non-radiative process is approximately 16 times larger than that of deuteration at an aromatic position. The observations can be explained in terms of isotope effects on vibronic spin-orbit coupling.


Author(s):  
Jia-Lin Chang ◽  
Wen-Hsin Kuo ◽  
Yun-Jhu Huang ◽  
Mu-Fong Chang ◽  
Jui-Yang Huang ◽  
...  

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