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Publikováno v:
SPIE Proceedings.
The luminescence e properit4se of ytterbium ions in strongtium haloborates were studied under optical, x-ray and synchrotron excitation. The emission spectra of Sr 2(1-x )Yb 5 O 9 R consists of a blue and a UV band. The former is due to 4f 13 5d yiel