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National Institute of Standards and Technology NIST Physical Measurement Laboratory
NIST Atomic Spectra Database
Ionization Energies Data

Ti (all spectra)
22 Data Rows Found 
Example of how to reference these results:
Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2024). NIST Atomic Spectra Database (ver. 5.12), [Online]. Available: https://physics.nist.gov/asd [2026, October 26]. National Institute of Standards and Technology, Gaithersburg, MD. DOI: https://doi.org/10.18434/T4W30F
BibTex Citation (new window)
 

 Ionization  Energy 
 (cm-1) 
  55 072.5         
  109 494           
  221 735.6         
  348 973.3         
  800 900           
  [964 100]          
  [1 134 660]          
  [1 374 900]          
  [1 549 000]          
  1 741 500           
  [2 137 900]          
  [2 351 109]          
  6 353 000           
  [6 968 700]          
  [7 618 000]          
  [8 408 200]          
  [9 116 000]          
  [9 842 400]          
  [10 858 900]          
  (11 495 470)          
  (50 401 766.6)        
  (53 440 763.5)        
Notes:
a Uncertainty of the listed value is unknown.

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

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