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The luminescence dampness of PbWO4 crystals upon their excitation by H+ ion beam during prolonged time intervals was studied. An exponential law for the luminescence yield reduction at a density of the beam proton irradiation of j approximately equals 6 X 1012 ion/cm2 was registered, with the yield falling to a final value of J(infinity ) approximately equals 1/3 X J0. Similar kind modification of the luminescence yield suggests that some channels of the radiative relaxation process for intermediate excited states in the PbWO4 bandgap could be clocked in part by local high energy excitation produced by energetic protons in the unit cells of lead tungstate.
Vladimir K. Egorov andEvgeniy V. Egorov
"Kinetics of luminescence intensity decrease on PbWO4 crystal excitation by H+ ion beam", Proc. SPIE 4142, Penetrating Radiation Systems and Applications II, (18 December 2000); https://doi.org/10.1117/12.410554
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Vladimir K. Egorov, Evgeniy V. Egorov, "Kinetics of luminescence intensity decrease on PbWO4 crystal excitation by H+ ion beam," Proc. SPIE 4142, Penetrating Radiation Systems and Applications II, (18 December 2000); https://doi.org/10.1117/12.410554