Author/Authors :
Nikl، نويسنده , , M. and Strakov?، نويسنده , , P. and Nitsch، نويسنده , , K. and Pet????ek، نويسنده , , V. and M??ka، نويسنده , , V. and Jarol??mek، نويسنده , , O. and Nov?k، نويسنده , , J. and Fabeni، نويسنده , , P.، نويسنده ,
Abstract :
X-ray-excited luminescence and time-resolved UV-excited photoluminescence were employed to evidence energy transfer processes between two main emission components in PbWO4 scintillating single crystals. It was found that energy transfer from the blue to green emission centres occurs via free-charge carriers above 150 K. This process causes a redistribution of the emitted energy in favour of the green emission component. At the same time, this process leads to the appearance of rather slow recombination decay components, mainly in the green emission component decay, which slow down the scintillator response of the PbWO4 single crystal.
