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NIST Atomic Spectra Database
Ionization Energies Data

C (all spectra)
6 Data Rows Found 

Example of how to reference these results:
Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2019). NIST Atomic Spectra Database (ver. 5.7.1), [Online]. Available: https://physics.nist.gov/asd [2019, December 15]. National Institute of Standards and Technology, Gaithersburg, MD. DOI: https://doi.org/10.18434/T4W30F
BibTex Citation (new window)
 

 At. Num.   El.  name   Isoel.  Seq.   Ground  Shells   Ground  Level   Ionization  Energy 
 (eV) 
Uncertainty
 (eV) 
 References 
Carbon  1s22s22p2   3P0    11.2602880                 0.0000011   L20057 
Carbon  1s22s22p   21/2    24.383154                  0.000016    c190 
Carbon  Be  1s22s2   1S0    47.88778                   0.00025     L876c191 
Carbon  Li  1s22s   2S1/2    64.49352                   0.00019     L11667 
Carbon  He  1s2   1S0    [392.090515]                 0.000025    L10054 
Carbon  1s   2S1/2    (489.993194)                 0.000007    L7188 

If you did not find the data you need, please inform the ASD Team.

[ASD Home][Lines Query][Levels Query][List of Spectra][Ground States and Ionization Energies][Bibliography][Help] NIST Physical Measurement Laboratory