The rotational spectra of205TI19F and203TI19F, molecular constants and break-down of the Born-Oppenheimer approximation

@article{Hoeft1987TheRS,
  title={The rotational spectra of205TI19F and203TI19F, molecular constants and break-down of the Born-Oppenheimer approximation},
  author={J. Hoeft and K. Ramachandran Nair},
  journal={Zeitschrift f{\"u}r Physik D Atoms, Molecules and Clusters},
  year={1987},
  volume={5},
  pages={345-349}
}
At wavelengths near 1 mm three rotational transitions of205Tl19F and203Tl19F have been observed. The analysis including previous measurements on rotational transitions at larger wavelengths resulted in sets of the Dunham coefficientsY01,Y11,Y21,Y31,Y02,Y12, andY03 of the two isotopic species. With these microwave data the constantsY10 ≈ ωe and −Y20 ≈ ωe xe were determined. The parameters of the Dunham potentiala0,a1,a2,a3,Be andre are given. The Dunham coefficientsYmn with the smallest relative… CONTINUE READING