Assignment of a perturbation in the FT-ICLAS spectrum of 12C2H2 around 12 709.5 cm-1
Titel:
Assignment of a perturbation in the FT-ICLAS spectrum of 12C2H2 around 12 709.5 cm-1
Auteur:
HURTMANS, D. KASSI, S. DEPIESSE, C. HERMAN, M.
Verschenen in:
Molecular physics
Paginering:
Jaargang 100 (2002) nr. 22 pagina's 3507-3511
Jaar:
2002-11-20
Inhoud:
The vibrational state perturbing the J = 17 and 18 rotational states of the zero-order v1 + 3v3 state of 12C2H2 is assigned to the state with vibrational energy predicted at Gν = 12 685.1 cm-1 using the cluster model (El Idrissi, M. I., Lievin, J., Campargue, A. and Herman, M., 1999, J. chem. Phys., 110, 2074). The assignment is discussed also in terms of the very special pressure shift behaviour demonstrated previously for absorption lines reaching these levels (Herregodts, F., Hepp, M., Hurtmans, D., Vander Auwera, J. and Herman, M., 1999, J. chem. Phys., 111, 7961). The experimental information arising from a set-up newly running at ULB, called FT-ICLAS brings decisive information in the assignment process. This set-up is described briefly.