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Table 4:

Comparison between theoretical f-values obtained in this work for Nb II and those calculated previously.
Lower levela Upper levela f-value f-values
Desig. E(cm-1) Desig. E(cm-1) this work RCIb
          velocity length

4d3(4F)5s 5F2
2629.13 4d3(4F)5p 5G$_3^\circ$ 33 919.24 0.277 0.239 0.315
4d3(4F)5s 5F3 3029.63 4d3(4F)5p 5G$_3^\circ$ 33 919.24 0.072 0.065 0.074
4d4 5D2 438.36 4d3(4F)5p 3D $^{\circ}_3$ 36 553.24 0.064 0.054 0.068
4d3(4F)5s 5F2 2629.13 4d3(4F)5p 3D $^{\circ}_3$ 36 553.24 0.022 0.020 0.027
4d3(4F)5s 5F3 3029.63 4d3(4F)5p 3D $^{\circ}_3$ 36 553.24 0.022 0.026 0.031
4d3(4F)5s 5F4 3542.56 4d3(4F)5p 3D $^{\circ}_3$ 36 553.24 0.065 0.052 0.068
4d4 3P2 7261.32 4d3(4F)5p 3D $^{\circ}_3$ 36 553.24 0.051 0.065 0.069
4d4 3F4 8320.37 4d3(4F)5p 3D $^{\circ}_3$ 36 553.24 0.040 0.038 0.041

Notes. (a) Ryabtsev et al. (2000); (b) Beck & Datta (1995).


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