Analyse de la bande ν2 + ν4 de 12CF 4. Coïncidences pour J' ≤ 40 avec les raies de CO 2

The ν 2 +ν 4 band of 12 CF 4 is analysed using an interferometric spectrum (max. path diff.=5 m). The assignment of the transitions is systematically performed up to J'=40. Altogether 4300 transitions are identified within 1750 experimental lines. A theoretical model limited to the third order is used to fit the data and to adjust simultaneously the 3 ground state parameters and the 14 upper state (v 2 =v 4 =1) parameters. The transition wavenumbers are now defined within 0.001 cm −1 , due to the accuracy of both spectrum and theoretical model. The results are then used to set up the list of all coincidences between the 12 CF 4 transitions (J'≤40) and the laser lines of 16 O 12 C 16 O, 18 O 12 C 18 O, 16 O 12 C 18 O, 16 O 13 C 16 O and 18 C 13 C 18 O, within a tuning range of ±1500 MHz Analyse de cette bande a partir d'un spectre interferometrique. Attribution de 4300 transitions correspondant a 1750 raies experimentales jusqu'a J'=40. Analyse des donnees a l'aide d'un modele limite au 3eme ordre d'approximation et deduction des 3 parametres relatifs a l'etat fondamental et des 14 parametres relatifs a l'etat v 2 =v 4 =1. Application des resultats a l'etablissement de la liste complete des coincidences entre les transitions de 14 CF 4 (J'≤40) et les raies des lasers 16 O 12 O 16 O, 18 O 12 C 18 O, 16 O 12 C 18 O, 16 O 13 C 16 O et 18 O 13 C 18 O