Line Tables

These tables give observed air wavelengths for the 2000-20000 Å range for spectra other than Fr I. Outside of the 2000-20000 Å range, the wavelengths are vacuum wavelengths. Lines of Fr I are extrapolated vacuum wavelengths from known energy levels. All observed lines are from NIST ASD. All energy level information is from NIST ASD. Wavelengths from MIT Wavelength Tables have been omitted as this publication appears to still be under copyright. However, in some cases, the exact same wavelength is given by NIST and MIT; in that case, the line is included.

Line intensities have been adjusted in the visible region to match photographed visible spectra. Line intensities of Rn have been adjusted to match the Grotrian diagram of Rn I. Line intensities in the infrared and ultraviolet are less reliable, but every effort was made to estimate them as accurately as possible. The elements He, O, Cl, Ar, Kr, and Xe have had their NIR lines photographed out to roughly 11000 Å. The intensities of the "brightest" several IR lines of each of these elements, in the 7000-10000 Å range, can be trusted. For the range of 800-8000 Å, estimated visual brightnesses (EVB) are given. A dash in either of the intensity columns means the line intensity would be less than one relative to other lines of the same spectrum.

All Spectra

H   He
Li Be   B C N O F Ne
Na Mg   Al Si P S Cl Ar
K Ca   Sc Ti V Cr Mn Fe Co Ni Cu Zn Ga Ge As Se Br Kr
Rb Sr   Y Zr Nb Mo Tc Ru Rh Pd Ag Cd In Sn Sb Te I Xe
Cs Ba La Ce Pr Nd Pm Sm Eu Gd Tb Dy Ho Er Tm Yb Lu Hf Ta W Re Os Ir Pt Au Hg Tl Pb Bi Po At Rn
Fr Ra Ac Th Pa U Np Pu Am Cm Bk Cf Es Fm Md No Lr Rf Db Sg Bh Hs Mt Ds Rg Cn Nh Fl Mc Lv Ts Og

Entire Range | 2000-10000 Å | Visible Region | Si CCD/CMOS Region | Thermal IR | Vacuum UV
Specific Wavelength (rounded):  Å  nm

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λ, Å E. Sp.# Rel.Int. EVB Lower Config Lower Term+J Lower Level Upper Config Upper Term+J Upper Level
99502487.56209 Fr I 20 - 20d 2D3/2 32449.483 20d 2D5/2 32450.488
119047619.0476 Fr I 20 - 21d 2D3/2 32493.64 21d 2D5/2 32494.48
163934426.22935 Fr I 20 - 23d 2D3/2 32562.52 23d 2D5/2 32563.13
192307692.30753 Fr I 20 - 24d 2D3/2 32589.68 24d 2D5/2 32590.2
222222222.22366 Fr I 25 - 25d 2D3/2 32613.15 25d 2D5/2 32613.6
249999999.99909 Fr I 25 - 26d 2D3/2 32633.57 26d 2D5/2 32633.97
285714285.7125 Fr I 25 - 27d 2D3/2 32651.44 27d 2D5/2 32651.79
322580645.15993 Fr I 25 - 28d 2D3/2 32667.18 28d 2D5/2 32667.49
357142857.14434 Fr I 25 - 29d 2D3/2 32681.11 29d 2D5/2 32681.39
400000000. Fr I 25 - 30d 2D3/2 32693.5 30d 2D5/2 32693.75
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