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Niobium (Nb) 
Int. Wavelength Aki Energy Configuration Term J Line Aki
(Å) (108s-1) Levels (cm-1) Ref. Ref.
80 3341.97 1142.79 4d35s2 a 4F 3/2 MCS75
31056.60 4d35s(a 5F)5p x 4G° 5/2
80 3343.71 1586.90 4d35s2 a 4F 5/2 MCS75
31485.20 4d35s(a 5F)5p x 4G° 7/2
110 3349.06 2154.11 4d35s2 a 4F 7/2 MCS75
32004.63 4d35s(a 5F)5p x 4G° 9/2
110 3358.42 2805.36 4d35s2 a 4F 9/2 MCS75
32572.72 4d35s(a 5F)5p x 4G° 11/2
120 3535.30 695.25 4d4(a 5D)5s a 6D 7/2 MCS75
28973.12 4d35s(a 5P)5p y 6P° 7/2
0.00 4d4(a 5D)5s a 6D 1/2
28278.25 4d35s(a 5P)5p y 6P° 3/2
90 3575.85 695.25 4d4(a 5D)5s a 6D 7/2 MCS75
28652.66 4d35s(a 5P)5p y 6P° 5/2
300 3580.27 1050.26 4d4(a 5D)5s a 6D 9/2 MCS75
28973.12 4d35s(a 5P)5p y 6P° 7/2
150 3739.80 0.59 695.25 4d4(a 5D)5s a 6D 7/2 MCS75 DHL86
27427.07 4d4(a 5D)5p x 6D° 7/2
1000 4058.94 1.28 1050.26 4d4(a 5D)5s a 6D 9/2 MCS75 DHL86
25680.36 4d4(a 5D)5p y 6F° 11/2
10237.51 4d35s2 a 2D 5/2
34867.68 4d35s(a 5P)5p x 4P° 3/2
800 4079.73 0.99 695.25 4d4(a 5D)5s a 6D 7/2 MCS75 DHL86
25199.81 4d4(a 5D)5p y 6F° 9/2
400 4100.92 0.76 391.99 4d4(a 5D)5s a 6D 5/2 MCS75 DHL86
24769.91 4d4(a 5D)5p y 6F° 7/2
13145.71 4d4(b 3F)5s b 4F 9/2
37523.53 4d4(c 3F)5p u 4G° 9/2
300 4123.81 0.58 154.19 4d4(a 5D)5s a 6D 3/2 MCS75 DHL86
24396.80 4d4(a 5D)5p y 6F° 5/2
300 4152.58 0.38 695.25 4d4(a 5D)5s a 6D 7/2 MCS75 DHL86
24769.91 4d4(a 5D)5p y 6F° 7/2
300 4163.66 0.65 154.19 4d4(a 5D)5s a 6D 3/2 MCS75 DHL86
24164.79 4d4(a 5D)5p y 6F° 3/2
250 4164.66 0.50 391.99 4d4(a 5D)5s a 6D 5/2 MCS75 DHL86
24396.80 4d4(a 5D)5p y 6F° 5/2
200 4168.13 0.91 0.00 4d4(a 5D)5s a 6D 1/2 MCS75 DHL86
23984.87 4d4(a 5D)5p y 6F° 1/2