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Lanthanide
Actinide
Superactinide
Ion of Protactinium, Z=91, I.P.=47500 cm-1
References:
Giacchetti A. // JOSA - 1966 - Vol. 56, ¹ 5 - P. 653-657.
Blaise J. et al. // Z. Phys. A - 1985 - Vol. 321, ¹ 1 - P. 61-63.
Richards E. et al. // Spectrochim. Acta B - 1968 - Vol. 23 - P. 635-642.
Electronic structure
Found 211 levels. [view]Found 65 transitions. [view]