Abstract
The radioluminescence characteristics of different types of α-Al 2 O 3 thermoluminescence dosemeter materials (Al 2 O 3 :C, Al 2 O 3 :Mg,Y), induced by 4 MeV linear accelerator electrons are reported. The main emission peak of these materials occurs at 410-420 nm, which closely matches their thermoluminescence emission spectra. The half-lives of this emission are in the ms range. However, in Al 2 O 3 :C another emission peak can be observed at 520 nm, which decays much faster, with a half-life of 28 μs. The intensity of this peak is low in unirradiated samples, and increases monotonously with dose.
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