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Lanthanide
Actinide
Superactinide
Ion of Promethium, Z=61, I.P.=87900 cm-1
References:
Davis S., Reader J. // JOSA - 1972 - Vol. 63, ¹ 11 - P. 1370.
Otto R. et al. // J. Phys. B - 1995 - Vol. 28, ¹ 16 - P. 3615-3627.
Alkhazov G. et al. // J. Phys. B - 1992 - Vol. 25, ¹ 2 - P. 571-576.
Fivet V. et al. // Mon. Not. R Astron. Soc. - 2007 - Vol. 380 - P. 771-780.
Electronic structure
Found 182 levels. [view]Found 281 transitions. [view]