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Table 1

Nb i lines investigated by means of laser optogalvanic spectroscopy (LOGS) or laser-induced fluorescence spectroscopy (LIFS).

λair (nm) σvac (cm-1) Int. Comment El (cm-1) J l Eu (cm-1) J u Method, λf (nm)
861.445 11 605.22 20 16 828.52 9/2 28 433.74 9/2 LIFS, 527.94
854.725 11 696.46 20 8 410.90 1/2 20 107.36 1/2 LOGS
852.696 11 724.29 50 10 922.74 7/2 22 647.03 5/2 LOGS
847.596 11 794.84 15 9 043.14 5/2 20 837.98 5/2 LOGS
845.672 11 821.67 – nl 19 556.91 9/2 31 378.58 11/2 LIFS, 491.64
843.981 11 845.35 25 12 357.70 9/2 24 203.05 11/2 LIFS, 467.21
842.317 11 868.76 – nl 19 931.98 5/2 31 800.74 7/2 LOGS
840.627 11 892.62 15 B(Ne) 15 467.08 5/2 27 359.70 5/2 LIFS, 535.90
839.231 11 912.40 – nl 20 060.84 7/2 31 973.24 7/2 LIFS, 605.67
835.003 11 972.72 20 8 410.90 1/2 20 383.62 3/2 LOGS
834.601 11 978.48 60 11 044.08 9/2 23 022.56 7/2 LIFS, 539.43
833.743 11 990.81 – nl 19 034.71 7/2 31 025.52 7/2 LOGS
833.284 11 997.42 – nl 14 899.26 5/2 26 896.68 7/2 LIFS, 559.95
829.365 12 054.10 3 B(Ne) 13 145.71 9/2 25 199.81 9/2 LIFS, 407.97
827.769 12 077.35 – nl, B(Nb) 15 282.35 7/2 27 359.70 5/2 LIFS, 535.90
827.490 12 081.42 – nl 19 931.98 5/2 32 013.40 5/2 LOGS
826.231 12 099.82 4 10 922.74 7/2 23 022.56 7/2 LOGS
823.682 12 137.27 3 15 282.35 7/2 27 419.62 9/2 LOGS
822.609 12 153.10 3 nc B(?) 20 060.84 7/2 32 213.94 9/2 LIFS, 436.84
821.125 12 175.06 3 nc 14 211.30 3/2 26 386.36 5/2 LIFS, 474.06
819.065 12 205.69 4 15 460.77 1/2 27 666.46 1/2 LOGS
818.103 12 220.04 – nl 22 936.90 7/2 35 156.94 9/2 LIFS, 434.28
817.623 12 227.21 5 15 439.25 3/2 27 666.46 1/2 LOGS
816.847 12 238.83 3 nc 19 568.72 5/2 31 807.55 5/2 LOGS
813.519 12 288.89 80 11 247.88 11/2 23 536.77 9/2 LIFS, 444.58
811.682 12 316.71 – nl 19 931.98 5/2 32 248.69 3/2 LIFS, 424.63
810.783 12 330.36 2 15 467.08 5/2 27 797.44 5/2 LIFS, 526.99
810.528 12 334.28 – nl 23 010.58 9/2 35 344.86 11/2 LIFS, 434.90
808.515 12 364.96 4 nc 19 568.72 5/2 31 933.68 5/2 LOGS
803.773 12 437.91 4 13 629.15 1/2 26 067.06 3/2 LOGS
803.606 12 440.49 5 nc 20 060.84 7/2 32 501.33 7/2 LIFS, 490.08
802.878 12 451.77 10 15 467.08 5/2 27 918.85 3/2 LOGS
802.471 12 458.08 4 15 460.77 1/2 27 918.85 3/2 LOGS
801.766 12 469.04 5 9 043.14 5/2 21 512.18 7/2 LIFS, 473.34
801.087 12 479.60 3 15 439.25 3/2 27 918.85 3/2 LOGS
800.755 12 484.78 3 12 288.25 3/2 24 773.03 5/2 LOGS
800.248 12 492.69 8 11 044.08 9/2 23 536.77 9/2 LOGS
798.005 12 527.81 4 14 899.26 5/2 27 427.07 7/2 LOGS
794.565 12 582.04 – nl 23 048.58 11/2 35 630.62 11/2 LIFS, 414.72
792.281 12 618.32 3 15 460.77 1/2 28 079.09 3/2 LOGS
790.932 12 639.84 3 15 439.25 3/2 28 079.09 3/2 LOGS
790.209 12 651.40 4 10 922.74 7/2 23 574.14 5/2 LOGS
789.857 12 657.03 10 nc 19 556.91 9/2 32 213.94 9/2 LOGS
788.526 12 678.40 60 11 524.65 13/2 24 203.05 11/2 LOGS
788.429 12 679.97 – nl 19 568.72 5/2 32 248.69 3/2 LIFS, 424.63
787.741 12 691.04 – nl 19 931.98 5/2 32 623.02 3/2 LIFS, 485.19
787.341 12 697.48 50 14 899.26 5/2 27 596.74 7/2 LOGS
786.266 12 714.84 10 B(Nb) 14 899.26 5/2 27 614.10 5/2 LIFS, 532.15
786.255 12 715.03 – nl, B(Nb) 17 476.22 11/2 30 191.25 13/2 LIFS, 581.94
785.793 12 722.50 – nl 19 931.98 5/2 32 654.48 5/2 LIFS, 430.63
785.604 12 725.56 15 B(Ne) 14 211.30 3/2 26 936.86 3/2 LIFS, 539.63
782.696 12 772.84 – nl 19 034.71 7/2 31 807.55 5/2 LIFS, 610.76
778.709 12 838.24 10 nc 20 060.84 7/2 32 899.08 7/2 LIFS, 410.96
777.208 12 863.03 5 nc 20 060.84 7/2 32 923.87 9/2 LIFS, 480.94
775.090 12 898.18 10 14 899.26 5/2 27 797.44 5/2 LOGS
773.586 12 923.25 6 13 629.15 1/2 26 552.40 1/2 LIFS, 578.70
773.026 12 932.61 3 nc B(Ne) 19 568.72 5/2 32 501.33 7/2 LIFS, 490.08
772.673 12 938.53 – nl, B(Nb) 19 034.71 7/2 31 973.24 7/2 LIFS, 605.67
772.403 12 943.05 3 nc 20 060.84 7/2 33 003.89 7/2 LOGS
771.680 12 955.17 4 11 247.88 11/2 24 203.05 11/2 LIFS, 467.21
770.737 12 971.03 5 11 044.08 9/2 24 015.11 7/2 LOGS
770.308 12 978.25 – nl 15 467.08 5/2 28 445.33 5/2 LIFS, 444.71
768.660 13 006.08 3 15 439.25 3/2 28 445.33 5/2 LIFS, 527.62
767.833 13 020.08 4 13 145.71 9/2 26 165.79 7/2 LIFS, 583.86
766.276 13 046.54 10 nc 18 332.04 11/2 31 378.58 11/2 LOGS
766.162 13 048.48 10 nc 19 556.91 9/2 32 605.39 9/2 LOGS
765.904 13 052.87 12 nc 19 034.71 7/2 32 087.58 7/2 LOGS
764.179 13 082.34 1 15 467.08 5/2 28 549.42 5/2 LIFS, 429.96
763.979 13 085.76 12 nc 19 568.72 5/2 32 654.48 5/2 LOGS
763.815 13 088.58 15 13 629.15 1/2 26 717.73 1/2 LOGS
762.557 13 110.17 4 15 439.25 3/2 28 549.42 5/2 LOGS
762.113 13 117.81 8 10 126.06 1/2 23 243.87 3/2 LIFS, 452.34
758.561 13 179.23 – nl 19 034.71 7/2 32 213.94 9/2 LIFS, 436.84
758.526 13 179.83 20 B(?) 14 899.26 5/2 28 079.09 3/2 LIFS, 438.84
758.320 13 183.41 20 12 982.38 7/2 26 165.79 7/2 LIFS, 583.86
754.338 13 253.01 4 15 282.35 7/2 28 535.36 7/2 LIFS, 442.94
754.017 13 258.65 4 11 247.88 11/2 24 506.53 9/2 LIFS, 460.68
753.538 13 267.07 10 15 282.35 7/2 28 549.42 5/2 LIFS, 429.96
751.977 13 294.62 50 13 145.71 9/2 26 440.33 9/2 LIFS, 590.05
751.759 13 298.47 4 nc 19 034.71 7/2 32 333.18 7/2 LOGS
751.237 13 307.71 15 13 629.15 1/2 26 936.86 3/2 LOGS

Notes. El, Jl, Eu and Ju are the energy and total electronic angular momentum quantum number of the lower and upper level, respectively; intensities Int. according to Humphreys & Meggers (1945), energy levels according to Humphreys & Meggers (1945) and Kröger et al. (2004, 2007); in the last column the fluorescence wavelength λf in air is given for the LIFS measurements; nl: new line; nc: new classification; B(Ne): a neon line, B(Nb) blend by a niobium line, B(?): blend by unclassified line.

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