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NIST Atomic Spectra Database
Ionization Energies Data

Pu (all spectra)
94 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) 
  48 601          
  [93 000]         
  [170 000]         
  [282 000]         
  (395 000)         
  (648 000)         
  (765 000)         
  (882 400)         
  (999 000)         
  (1 121 000)         
  (1 283 000)         
  (1 445 000)         
  (1 613 000)         
  (1 766 000)         
  (2 081 000)         
  (2 242 000)         
  (3 137 000)         
  (3 355 000)         
  (3 581 000)         
  (3 823 000)         
  (4 057 000)         
  (4 291 000)         
  (4 638 000)         
  (4 880 000)         
  (5 138 000)         
  (5 388 000)         
  (6 581 000)         
  (6 877 000)         
  (7 170 000)         
  (7 470 000)         
  (8 300 000)         
  (8 620 000)         
  (9 520 000)         
  (9 860 000)         
  (10 800 000)         
  (11 450 000)         
  (12 080 000)         
  (12 728 000)         
  (13 360 000)         
  (14 000 000)         
  (14 650 000)         
  (15 280 000)         
  (16 040 000)         
  (16 700 000)         
  (17 340 000)         
  (18 000 000)         
  (18 600 000)         
  (19 300 000)         
  (22 374 000)         
  (22 938 000)         
  (23 535 000)         
  (24 172 000)         
  (24 777 000)         
  (25 374 000)         
  (26 536 000)         
  (27 149 000)         
  (27 818 000)         
  (28 447 000)         
  (30 939 000)         
  (31 544 000)         
  (32 206 000)         
  (32 811 000)         
  (36 263 000)         
  (36 981 000)         
  (38 771 000)         
  (39 473 000)         
  (63 113 000)         
  (64 452 000)         
  (65 896 000)         
  (67 420 000)         
  (68 872 000)         
  (70 291 000)         
  (73 638 000)         
  (75 122 000)         
  (76 768 000)         
  (78 268 000)         
  (82 494 000)         
  (83 793 000)         
  (85 221 000)         
  (86 543 000)         
  (97 303 000)         
  (98 892 000)         
  (102 086 000)         
  (103 578 000)         
  (213 600 000)         
  (217 108 000)         
  (221 012 000)         
  (224 585 000)         
  (264 429 000)         
  (269 276 000)         
  (275 414 000)         
  (279 276 000)         
  (1 099 375 000)         
  (1 118 209 000)         
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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