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Home All issues Volume 699 (July 2025) A&A, 699 (2025) A29 Full HTML
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Table 1

Energies (E1) in cm−1 of the 14 lowest Nb V levels compared with RMBPT(a) (E2) and NIST(b) results.

i Level E1 E2 NIST ΔE1 ΔE2 i Level E1 E2 NIST ΔE1 ΔE2
1 4d 2D3/2 0 0 0 − − 8 4f 2F5/2o$\[4 \mathrm{f}~^{2} \mathrm{F}_{5 / 2}^{\mathrm{o}}\]$ 220767.28 − 215259.1 2.6 −
2 4f 2D5/2 1753.65 1741.83 1867.4 6.07 6.7 9 4f 2F7/2o$\[4 \mathrm{f}~^{2} \mathrm{F}_{7 / 2}^{\mathrm{o}}\]$ 220785.49 − 215397.5 2.5 −
3 5s 2S1/2 77316.84 72113.24 75929.6 1.82 5.0 10 6s 2S1/2 227207.66 219451.86 228496.3 0.56 4.0
4 5p 2P1/2o$\[5 \mathrm{p}~^{2} \mathrm{P}_{1 / 2}^{\mathrm{o}}\]$ 129420.95 123581.01 129195.2 0.17 4.3 11 6p 2P1/2o$\[6 \mathrm{p}~^{2} \mathrm{P}_{1 / 2}^{\mathrm{o}}\]$ 249053.23 241153.11 250506.5 0.58 3.7
5 5p 2P3/2o$\[5 \mathrm{p}~^{2} \mathrm{P}_{3 / 2}^{\mathrm{o}}\]$ 132982.30 126972.64 132800.0 0.14 4.4 12 6p 2P3/2o$\[6 \mathrm{p}~^{2} \mathrm{P}_{3 / 2}^{\mathrm{o}}\]$ 250377.42 242602.26 252023.3 0.65 3.7
6 5d 2D3/2 211486.59 203904.11 211694.0 0.10 3.7 13 6d 2D3/2 285519.24 277515.63 287163.6 0.57 3.4
7 5d 2D5/2 211877.74 204434.63 212238.4 0.17 3.7 14 6d 2D5/2 285692.39 277515.77 287425.6 0.60 3.4

Notes. ΔX=100×|X− NIST  NIST |$\[\Delta_{X}=100 \times\left|\frac{X-\text { NIST }}{\text { NIST }}\right|\]$ is the relative error (in percent) between the NIST values and the X ones (X = E1; E2). (a) Jyoti et al. (2021) (b) Kramida et al. (2024).

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