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"New Dunham coefficients of the A1 Σ+-State of NaH and NaD" S. Lochbrunner, M. Motzkus, G. Pichler, K.-L. Kompa, P. HeringZ. Phys. D 38 (1996), 35-40 Abstract: We determined new Dunham coefficients of the A1Σ+-State of NaH and NaD from degenerate Four-Wave-Mixing (DFWM) spectra in the near UV and in the blue spectral region. In the case of NaH we combined these data with results of Rafi et al. and Orth et al.. The new set of coefficients describes the vibrational dependence of the rotational constants B and D and of the band origins from v'=0 up to 25. The spectral positions of the lines in our DFWM-spectra can be reproduced by this coefficients with an accuracy better than 0.3 cm-1 for J-values <15 and 2 cm-1 for J-values <25. Especially for high J-values this is an improvement up to 30 times in comparison to Dunham coefficients recommended before a RKR-potential of the A1 Σ+-State was calculated with the new coefficients. The Dunham coefficients of NaD were obtained by scaling the NaH coefficients with the reduced masses of the molecules. A comparison of our results to molecular constants determined from the measured NaD-spectra shows good agreement. This publication has not been written at BMO BMO authors (in alphabetic order): Stefan Lochbrunner Order Hardcopy  WWW-Version |
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Letzte Änderung: 2016-09-14 13:34
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