New Dunham coefficients of the A1∑+-State of NaH and NaD

摘要: We determined new Dunham coefficients of the A1∑+-State NaH and NaD from degenerate Four- Wave-Mixing (DFWM) spectra in near UV blue spectral region. In case we combined these data with results Rafi et al. Orth al.. The set describes vibrational dependence rotational constants B D band origins ύ = 0 up to 25. positions lines our DFWM-spectra can be reproduced by this an accuracy better than 0.3 cm-1 for J-values ≤ 15 2 Especially high is improvement 30 times comparison recommended before. A RKR-potential A1∑+-state was calculated coefficients. were obtained scaling reduced masses molecules. molecular measured NaD-spectra shows good agreement.