Author/Authors :
Nikl، نويسنده , , M and Bohacek، نويسنده , , P and Mihokova، نويسنده , , E and Solovieva، نويسنده , , N and Vedda، نويسنده , , A and Martini، نويسنده , , M and Pazzi، نويسنده , , G.P and Fabeni، نويسنده , , P and Kobayashi، نويسنده , , M، نويسنده ,
Abstract :
We present measurements of radioluminescence, photoluminescence, thermoluminescence and decay kinetics (excitation by UV and 22Na photons) on Mo- and (Mo, Y)-doped PbWO4 single crystals. A wide concentration range (200–50 000 ppm) of Mo-doping is considered. Comparing to Mo-doped PbWO4 crystals Y-codoping results in significant suppression of trapping states and improvement of temporal characteristics, consisting namely in acceleration of the scintillation decay process. Moreover, codoped crystals with an optimum Mo concentration (2750–10 000 ppm) show an increased light yield, while temporal characteristics are comparable to those of undoped PbWO4.
