The actinyl ions, AnO22+ (An = U, Np, Pu, and Am), are a series of linear dioxo dications that dominate the chemistry of the light actinides in their higher oxidation states.  Theoretical and experimental studies have been reported on the nature of the bonding in this structural motif.  We will discuss photoluminescence emission measurements between 6000 and 10,200 cm-1 from crystalline Cs2U(Pu)O2Cl4 both at room temperature and cooled to 75 K.  Pulsed laser excitation between 625-1200 nm produces rich emission spectra that are more complex than the electronically simpler 5f1 Cs2U(Np)O2Cl4 system, as one would expect.  Photoluminescence decay dynamics, and excitation energy dependence indicate multiple emitting states and complex decay pathways. LA-UR 11-05998

Near-infrared photoluminescence of neptunyl and plutonyl ions

243rd National Meeting (2012)

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