Article ID Journal Published Year Pages File Type
1889237 Radiation Measurements 2007 4 Pages PDF
Abstract

The shapes of luminescence excitation spectra for stoichiometric crystals LiGdF4 and LiLuF4 measured in the spectral region of 4fn4fn–4fn-15d4fn-15d transitions in Gd3+Gd3+ and Lu3+Lu3+ ions are analyzed on the basis of diffusion model for the energy migration to the surface quenching centers along Gd3+Gd3+ and Lu3+Lu3+ sublattices. The main features of the excitation spectra were well enough simulated with the use of simple diffusion approach. Estimation of the diffusion length L   for the energy migration along Gd3+Gd3+ sublattice in LiGdF4 at 10 K gave reasonable values L∼150L∼150, 1200 and 2250A˚ for the migration via 5d5d, G7/26 and P7/26 levels, respectively.

Related Topics
Physical Sciences and Engineering Physics and Astronomy Radiation
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