FRANCK–CONDON FACTORS AND r-CENTROIDS TO HIGH VIBRATIONAL QUANTUM NUMBERS FOR THREE BAND SYSTEMS OF CO+ AND ABSOLUTE BAND STRENGTHS FOR THE COMET-TAIL SYSTEM

1962 ◽  
Vol 40 (12) ◽  
pp. 1772-1783 ◽  
Author(s):  
R. W. Nicholls
Keyword(s):  
Comet Tail ◽  
Condon Factor ◽  
Quantum Numbers ◽  
Condon Factors ◽  
Franck Condon ◽  
Morse Potentials

Franck–Condon factor and r-centroid arrays computed to high vibrational quantum numbers for Morse potentials are displayed for the CO+ comet-tail (A2Πi–X2Σ+), first negative (B2Σ+–X2Σ+), and Baldet–Johnson (B2Σ+–A2Πi) band systems. Estimates of band strengths are made for CO+ comet-tail bands.

scholarly journals Calculating Franck Condon Factor and Potential Curves for X2Σ+-A2Π System of BeBr Molecule

2015 ◽  
Vol 52 ◽  
pp. 5-10
Author(s):  
Adil Nameh Ayaash
Keyword(s):  
Excited State ◽  
Potential Function ◽  
Dissociation Energy ◽  
Ground State ◽  
Spectroscopic Properties ◽  
Spectroscopic Constants ◽  
Condon Factor ◽  
Condon Factors ◽  
Franck Condon ◽  
Potential Curves

The present work concerns by study of spectroscopic properties for Beryllium monobromide BeBr. Franck Condon Factor of BeBr molecule had been calculated theoretically for ground state X2Σ+ and excited state A2Π by special integrals by depending on spectroscopic constants for this molecule. The Dissociation energy and potential curves of this molecule is studied in this work by using Hua potential function, the results of potential curves and Franck Condon Factors converge with other researchers results.

The visible band systems of GeH+ and GeD+ in the helium afterglow

1986 ◽  
Vol 64 (10) ◽  
pp. 1374-1378 ◽  
Author(s):  
Sumio Yamaguchi ◽  
Masaharu Tsuji ◽  
Yukio Nishimura
Keyword(s):  
Electronic Transition ◽  
Transition Moment ◽  
Spectroscopic Constants ◽  
Electronic Transition Moment ◽  
Visible Band ◽  
Condon Factors ◽  
First Time ◽  
Franck Condon ◽  
Morse Potentials ◽  
Higher Sensitivity

The [Formula: see text] intercombination bands of GeH+ and GeD+ have been observed from the helium afterglow reactions of GeH4 and GeD4, respectively. Only the (0,0) band of [Formula: see text] had been rotationally analyzed before; the higher sensitivity of the new measurements made possible the rotational analyses of four weaker bands. Eleven bands of [Formula: see text] were observed for the first time, and rotational analyses were made of five dominant bands. By using isotope relationships, we obtained detailed spectroscopic constants for the [Formula: see text] and X1Σ+ states of GeH+ and GeD+. Franck–Condon factors and r centroids of the [Formula: see text] transitions of GeH+ and GeD+ have been calculated on the basis of Morse potentials. The dependence of the electronic transition moment on the r centroid and the relative vibrational populations of [Formula: see text] and [Formula: see text] have been estimated.

Internal conversion in aromatic and N-heteroaromatic molecules

1965 ◽  
Vol 18 (10) ◽  
pp. 1589 ◽  
Author(s):  
JP Byrne ◽  
EF McCoy ◽  
IG Ross
Keyword(s):  
Theoretical Basis ◽  
Internal Conversion ◽  
Empirical Approach ◽  
Bending Vibrations ◽  
Condon Factor ◽  
Aromatic Molecules ◽  
Condon Factors ◽  
Semi Empirical ◽  
Franck Condon

A previous semi-empirical approach to the calculation of the rate of internal conversion, regarded as a tunnelling process, is reformulated on a sounder theoretical basis. Following Robinson and Frosch, tunnelling rates are correlated with Franck-Condon factors for the associated transition. The total Franck-Condon factor, S2max, is a product of three terms, associated respectively with skeletal stretching, CH stretching, and skeletal angle bending vibrations. The value of S2max may be controlled by one term only of the product, or by two or more (mixed tunnelling). Tunnelling rates should be slowed down by deuteration only when CH vibrations participate significantly; specific predictions are made here. Skeletal-angle bending vibrations are of negligible importance in internal conversion in aromatic molecules, but they are very significant in transitions between states of π,π* and n,π* type in heteroaromatics. Correlation between S2max and estimated tunnelling rates is encouraging for four aromatic molecules and certain monocyclic azines; but the failure of pyridine and pyridazine to show luminescence is still unexplained. The case of pyrazine is discussed in detail.

The effect of high rotational quantum numbers on Franck-Condon factors

1982 ◽  
Vol 27 (1) ◽  
pp. 103-105 ◽  
Author(s):  
R. Ramakrishna Reddy ◽  
P. Sambasiva Rao ◽  
T.V. Ramakrishna Rao
Keyword(s):  
Quantum Numbers ◽  
Condon Factors ◽  
Franck Condon
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