²³⁸U I       (80.6;unp.24)

²³⁸U II       (80.6;unp.24)

²³⁸U III      (80.6;84.4;87.7;unp.24)

²³⁸U V        (80.5)

²³⁸U VI       (76.5)

References :

(76.5): V. Kaufman and L.F. Radziemski Jr., J. opt. Soc. Am., 1976, 66, 599-600.

(80.5): J.F. Wyart, V. Kaufman and J. Sugar, Physica Scripta, Sweden, 1980, 22, 389-6.

(80.6): B.A. Palmer, R.A. Keller and R. Engleman Jr., 1980, L.A. report -8251-MS.

(84.4): B.A. Palmer and R. Engleman Jr., 1, 609-25

(87.7): J. Blaise, J.F. Wyart, B.A. Palmer, R. Engleman Jr. and F. Launay, 19th Conf. Eur. Group Atomic Spectrosc., Comm. A3-08, Europhys. Conf. Abstr., 11E

(unp.24): B.A. Palmer, R.A. Keller and R. Engleman Jr.