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The properties of various inorganic scintillator materials with different origin of their VUV luminescence have been studied under pulsed excitation by XUV (50-1000 eV) synchrotron radiation. A comparison of spectral and timing characteristics of these crystalline VUV emitters has been performed. The processes of energy transfer from the host crystal to the luminescence centers of different nature were analyzed from the features of excitation spectra in the regions of inner-shell absorption. Index Terms--Crossluminescence, excitous, fast VUV luminescence, inorganic scintillators, rare earth ions, synchrotron radiation.

Luminescence of new irregular [Ce.sup.3+]-related centers: the unperturbed and perturbed [Ce.sup.3+] ions located in [Al.sup.3+] sites and the [Ce.sup.3+.sub.LU] ions perturbed by [Lu.sup.3+.sub.Al] ions was found. The systematic study of these centers by means of the ESR and luminescence methods and their influence on scintillation characteristics was performed. The structure and symmetry of the irregular [Ce.sup.3+] centers was established and their spectral characteristics were explained. Index Terms--Antisite defects, ESR, luminescence, scintillators.