Article (Scientific journals)
Calculation of autocorrelation functions for electronic spectra
Dehareng, Dominique
1984In Chemical Physics, 84, p. 393-401
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Keywords :
autocorrelation function; vibrational motion; semiclassical wavepacket dynamics; classical trajectory calculations
Abstract :
[en] The autocorrelation function C(t) associated with the vibrational motion in the A 2Pi u state of N2+ is calculated by three different methods. The classical method is based on classical trajectory calculations and provides good results except for secondary maxima appearing in the experimental autocorrelation function and resulting from interference effects. In the semiclassical method, the wavefunction is expanded in a basis of frozen gaussian functions. The secondary maxima are reproduced and the result is quite satisfactory. The superposition procedure consists in an expansion of the wavefunction in the eigenfunctions of the A state of N2+ and leads to a very simple formula for the autocorrelation function C(t). The secondary maxima are accounted for and the calculated function agrees very well with experimental results.
Disciplines :
Chemistry
Author, co-author :
Dehareng, Dominique ;  Université de Liège - ULiège > Centre d'ingénierie des protéines
Language :
English
Title :
Calculation of autocorrelation functions for electronic spectra
Publication date :
1984
Journal title :
Chemical Physics
ISSN :
0301-0104
Publisher :
Elsevier Science, Amsterdam, Netherlands
Volume :
84
Pages :
393-401
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
BELSPO - SPP Politique scientifique - Service Public Fédéral de Programmation Politique scientifique
FRFC - Fonds de la Recherche Fondamentale Collective [BE]
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