Abstract

In order to investigate the soft X-ray energy transformation in oxide detectors the optical spectra of several wide-gap oxide crystals were analyzed. The time-resolved luminescence (2.5–10.5eV) and luminescence excitation spectra (50–200 and 500–630eV) as well as decay kinetics of luminescence at 10 and 295K were recorded using the synchrotron radiation from BW3 channel (HASYLAB, DESY). Several analogous features were discovered in the excitation spectra of both intrinsic self-trapped exciton luminescence and recombination luminescence for BeO, BeAl2O4, Be2SiO4 and AlPO4 crystals under inner-shell excitation. Simultaneously, the excitation of Ce3+-luminescence in scintillating Be2La2O5-Ce crystals significantly differs.

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