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Lanthanide
Actinide
Superactinide
Ion of Protactinium, Z=91, I.P.=92000 cm-1
References:
Gracchetti A. // JOSA - 1963 - Vol. 53 - P. 506-507; 1967 - Vol. 57, ¹ 6 - P. 728-733.
Brewer L. // JOSA - 1971 - Vol. 61, ¹ 12 - P. 1666-1682.
Blaise J. et al. // Phys. Scr. - 1980 - Vol. 22 - P. 224-230.
Electronic structure
Found 278 levels. [view]Found 38 transitions. [view]