Isotope Effects on Franck—Condon Factors. V. Electronic Transitions of Isotopic O2, N2, C2, and H2 Molecules

1966 ◽  
Vol 44 (6) ◽  
pp. 2398-2405 ◽  
Author(s):  
M. Halmann ◽  
I. Laulicht
1975 ◽  
Vol 30 (12) ◽  
pp. 1730-1741 ◽  
Author(s):  
Jürgen Brickmann

Abstract A formalism is presented to obtain approximate analytic expressions for the eigenstates and eigenvalues of a quantum double oscillator (QDO). The matrix elements of a large class of operators with respect to states of different double oscillators result as finite sums of explicit functions of the respective parameters. Matrix elements between states of a harmonic oscillator and a double oscillator are also determined. The analytic expressions were used to calculate Franck-Condon factors for electronic transitions including double oscillator anharmonicities.


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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