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NIST Atomic Spectra Database
Ionization Energies Data

Sm (all spectra)
62 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) 
  45 519.69         
  [89 350]           
  [189 940]           
  [335 850]           
  [505 400]           
  (700 000)           
  (830 000)           
  (955 000)           
  (1 140 000)           
  (1 276 000)           
  (1 445 000)           
  (1 678 000)           
  (1 910 000)           
  (2 070 000)           
  (2 230 000)           
  [2 472 000]           
  (3 823 000)           
  (4 081 000)           
  (4 380 000)           
  (4 686 000)           
  (4 976 000)           
  (5 307 000)           
  (5 662 000)           
  (5 985 000)           
  (6 307 000)           
  (6 630 000)           
  (7 872 000)           
  (8 195 000)           
  (8 549 000)           
  (8 896 000)           
  (9 517 000)           
  (9 888 000)           
  (10 743 000)           
  [11 143 000]           
  (19 123 000)           
  (19 890 000)           
  (20 720 000)           
  (21 583 000)           
  (22 438 000)           
  (23 285 000)           
  (24 422 000)           
  (25 302 000)           
  (26 237 000)           
  (27 124 000)           
  (29 592 000)           
  (30 375 000)           
  (31 238 000)           
  (32 028 000)           
  (34 093 000)           
  (34 980 000)           
  (36 682 000)           
  (37 545 000)           
  (84 640 000)           
  (86 801 000)           
  (89 205 000)           
  (91 439 000)           
  (98 916 000)           
  (101 529 000)           
  (104 788 000)           
  (106 972 100)           
  (435 427 430)           
  (445 333 400)           
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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