Add time:08/13/2019         Source:sciencedirect.com

Normal and second derivative UV-VIS and normal near-IR spectra of tripositive erbium ion in acetate, nitrate and sulphate solutions of erbium, ammonium, magnesium, potassium and sodium have been investigated. Interaction (E0, E1, E2, E3, ξ4f, α, β, γ, T2, T3, T4, T6, T7, T8) and intensity (Ω2, Ω4, Ω6) parameters are derived. Radiative lifetimes of the fluorescent levels are estimated from the measured absorption intensities. Variations in intensities of the hypersensitive transition bands are discussed.

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