| Popis: |
Preliminary results of restoring potentials of interactions Na(3s, 3p)-CO2(X1(Sigma) g+) from measured far wing spectra of sodium resonance line Na-D perturbed by CO2 are presented. The spectra in the range of (Delta) (sigma) approximately equals 10-3500 cm-1 are considered following the quasi-static theory of line broadening by inert gases as continua and due to the A $ARLR X and B $ARLR X transitions of Na-CO2 quasi-molecules. The reduced absorption coefficient K((sigma) ) at frequency (sigma) equals (sigma) 0 + (Delta) (sigma) is calculated as corresponding to the radiation from molecules with internuclear separation R, where hc(sigma) equals VA,B - VX. As a first approximation, all the three potentials are presented in the shape of a (6,12)-Lennard-Jones potential. The constants C6 and C12 are determined as independent variables by minimization of the sum of squared deviations between measured and calculated K((sigma) ). Four versions of minimization were considered successively: (1) only red wing, (2) only blue wing (3) both blue and red wings with 6 independent variables (C6 and C12), and (4) both wings with fixed C6. The calculated K((Delta) (sigma) ) are compared to the measured ones.© (1996) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only. |
