scholarly journals Ab initio study of the electronic spectrum of BeO

1999 ◽  
Vol 64 (12) ◽  
pp. 721-735 ◽  
Author(s):  
Ivana Adamovic ◽  
Maja Parac ◽  
Michael Hanrath ◽  
Miljenko Peric
Keyword(s):  
Energy Range ◽  
Ab Initio ◽  
Electronic Spectrum ◽  
Quantum Chemical ◽  
Electronic States ◽  
Vibrational Structure ◽  
Ab Initio Method ◽  
Ab Initio Study

Low-lying singlet and triplet electronic states of the BeO molecule are calculated by means of the quantum chemical ab initio method. It was found that all states in the energy range from 0 to 50000 cm-1 are of valence character. Particular attention was paid to the investigation of the dissociative behavior of the states considered. The vibrational structure of the A 1P ? X1S and B 1S+ ? X1S+ spectral systems was calculated.

scholarly journals Use of the group theory for classification of electronic states of acetylene

2003 ◽  
Vol 68 (4-5) ◽  
pp. 363-381
Author(s):  
Stanka Jerosimic ◽  
Miljenko Peric
Keyword(s):  
Group Theory ◽  
Ab Initio Calculations ◽  
Ab Initio ◽  
Electronic Spectrum ◽  
Quantum Chemical ◽  
Electronic States ◽  
Global Structure ◽  
Acetylene Molecule

The electronic states of the acetylene molecule are classified employing the group theory combined with the use of the Walsh diagrams and some elementary quantum chemical considerations. The results of this analysis are compared with those obtained by explicit ab initio calculations. It is shown that the global structure of the electronic spectrum can be reproduced/predicted without carrying out detailed ab initio calculations. .

Ab initio study of the low-lying electronic states of the C2− anion

2016 ◽  
Vol 1079 ◽  
pp. 57-63 ◽  
Author(s):  
Weixin Shi ◽  
Chuanliang Li ◽  
Huiyan Meng ◽  
Jilin Wei ◽  
Lunhua Deng ◽  
...  
Keyword(s):  
Ab Initio ◽  
Electronic States ◽  
Ab Initio Study

scholarly journals Ab Initio Study of Ground-state CS Photodissociation via Highly Excited Electronic States

2019 ◽  
Vol 882 (2) ◽  
pp. 86 ◽  
Author(s):  
Zhongxing Xu ◽  
Nan Luo ◽  
S. R. Federman ◽  
William M. Jackson ◽  
Cheuk-Yiu Ng ◽  
...  
Keyword(s):  
Ab Initio ◽  
Ground State ◽  
Electronic States ◽  
Ab Initio Study ◽  
Excited Electronic States

Ab initio study of the electronic spectrum of the PO2 radical

1996 ◽  
Vol 255 (4-6) ◽  
pp. 350-356 ◽  
Author(s):  
Z.-L. Cai ◽  
Gerhard Hirsch ◽  
Robert J. Buenker
Keyword(s):  
Ab Initio ◽  
Electronic Spectrum ◽  
Ab Initio Study

Ab-Initio Study of Dopant Interstitials in 4H-SiC

2005 ◽  
Vol 483-485 ◽  
pp. 523-526 ◽  
Author(s):  
Alexander Mattausch ◽  
M. Bockstedte ◽  
Oleg Pankratov
Keyword(s):  
Ab Initio ◽  
Ab Initio Method ◽  
Ab Initio Study ◽  
Nitrogen And Phosphorus ◽  
P Type

We investigated the the interstitial configurations of the p-type dopants boron and aluminum and the n-type dopants nitrogen and phosphorus in 4H-SiC by an ab initio method. In particular, the energetics of these defects provides information on the dopant migration mechanisms. The transferability of the earlier results on the boron migration in 3C-SiC to the hexogonal polytype 4H-SiC is verified. Our calculations suggest that for the aluminum migration a kick-out mechanism prevails, whereas nitrogen and phosphorus diffuse via an interstitialcy mechanism.

Ab initio study of nonadiabatic coupling matrix elements between excited 22A′ and 32A′ electronic states of C2H

2001 ◽  
Vol 336 (1-2) ◽  
pp. 135-142 ◽  
Author(s):  
Alexander M. Mebel ◽  
Michael Baer ◽  
Victor M. Rozenbaum ◽  
Sheng H. Lin
Keyword(s):  
Ab Initio ◽  
Electronic States ◽  
Matrix Elements ◽  
Ab Initio Study ◽  
Coupling Matrix ◽  
Nonadiabatic Coupling
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