Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1880965 | Radiation Measurements | 2011 | 4 Pages |
Abstract
The thermoluminescence glow curves of Sr2MgSi2O7: Eu2+, Dy3+ phosphor were measured after various delay times. A single trap center is confirmed that conforms to a kinetics model with order greater than 1, leading to a suppression of TL intensity and a high temperature shift of the TL peak with longer delay times. A constant trap depth supports this phenomenon. Further, the decay curve of the afterglow and the change in initial trapped carrier concentration can be fitted using general-order kinetics and the fitting results show that the afterglow is close to a second-order kinetics process, which implies that most of the released carriers are retrapped.
Keywords
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Radiation
Authors
Haoyi Wu, Yihua Hu, Xiaojuan Wang,