Franck-Condon factors and r-centroids for the D2?-X2? system of the AlO molecule

1978 ◽  
Vol 28 (5) ◽  
pp. 631-632
Author(s):  
A. D. Smirnov ◽  
N. E. Kuz'menko ◽  
Yu. Ya. Kuzyakov

1984 ◽  
Vol 39 (11) ◽  
pp. 1049-1055 ◽  
Author(s):  
A. Bernard ◽  
R. Gravina

From combinations between known ultraviolet transitions of the AlO molecule line positions in the A2Πi - X2∑+ system are tentatively proposed. Indeed, the available data on the C2Πr → X2∑+ and C2Πr → A2Πi transitions permit us to derive about 2400 energy level differences in the A-X system corresponding to the six ν-connected bands 0-0, 0-1, 0-2, 1-0, 1-1 and 1-2. A unique and consistent set of rovibrational constants is derived from a global fitting, allowing to reproduce the observed differences with a total standard deviation of 0.053 cm-1. A catalogue of vacuum line wavenumbers in the six bands is generated and can be made available on request. The synthetic spectra are expected to represent properly the true spectra at least up to J ~ 35.5 and can therefore be of usefulness for the detection of the system in the spectra of M giant- and Mira-type stars.Franck-Condon factors and r-centroïds appropriate to RKR potentials and estimates of intensities in emission are given for bands up to ν′ = 5, v″ = 8.More reliable values for the internal partition functions and dissociation constants of AlO are computed for temperatures between 1000 and 8000 K. All the known and predicted electronic states are taken into account, and present or recent values for the molecular parameters and dissociation energy are used.



2010 ◽  
Vol 263 (2) ◽  
pp. 178-182 ◽  
Author(s):  
C.T. Londhe ◽  
K. Sunanda ◽  
M.D. Saksena ◽  
S.H. Behere


2020 ◽  
Vol 66 (5 Sept-Oct) ◽  
pp. 568
Author(s):  
C. T. Londhe ◽  
Hewa Y Abdullah

Franck–Condon factors and r-centroids were computed for the D2S+ - A2Πi and D2S+ - B2S+ band systems of the aluminium oxide (AlO) molecule for the v' = 10; v" = 10 matrix using the method developed by Jarmain and Nicholls. The latest Fourier-transform Spectrometer molecular constants of ground and excited state are used. The intensities of these bands are discussed and the Franck–Condon factors and r-centroids obey the established relationships





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


2001 ◽  
Vol 114 (9) ◽  
pp. 4036-4044 ◽  
Author(s):  
Patrizia Calaminici ◽  
Andreas M. Köster ◽  
Tucker Carrington ◽  
Pierre–Nicholas Roy ◽  
Nino Russo ◽  
...  


1968 ◽  
Vol 1 (5) ◽  
pp. 993-996 ◽  
Author(s):  
R C Maheshwari ◽  
I D Singh ◽  
M M Shukla
Keyword(s):  


2005 ◽  
Vol 04 (01) ◽  
pp. 225-245 ◽  
Author(s):  
IKUO TOKUE ◽  
KATSUYOSHI YAMASAKI ◽  
SATOSHI MINAMINO ◽  
SHINKOH NANBU

To elucidate the ionization dynamics, in particular the vibrational distribution, of H 2 O +(Ã) produced by photoionization and the Penning ionization of H 2 O and D 2 O with He *(2 3S) atoms, Franck–Condon factors (FCFs) were given for the [Formula: see text] ionization, and the transition probabilities were presented for the [Formula: see text] emission. The FCFs were obtained by quantum vibrational calculations using the three-dimensional potential energy surfaces (PESs) of [Formula: see text] and [Formula: see text] electronic states. The global PESs were determined by the multi-reference configuration interaction calculations with the Davidson correction and the interpolant moving least squares method combined with the Shepard interpolation. The obtained FCFs exhibit that the [Formula: see text] state primarily populates the vibrational ground state, as its equilibrium geometry is almost equal to that of [Formula: see text], while the bending mode (ν2) is strongly enhanced for the H 2 O +(Ã) state; the maximums in the population of H 2 O + and D 2 O + are approximately v2 = 11–12 and 15–17, respectively. These results are consistent with the distributions observed by photoelectron spectroscopy. Transition probabilities for the [Formula: see text] system of H 2 O + and D 2 O + show that the bending progressions consist primarily of the [Formula: see text] emission, with combination bands from the (1, v′2 = 4–8, 0) level being next most important.



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