Evolution of the trapped charge distribution due to trap emptying processes in a natural aluminosilicate.
The evolution of the thermoluminescence glow curve of a natural Ca-Be rich aluminosilicate after annealing treatments at different temperatures has been studied in order to evaluate the changes in the trapped charge distribution. The glow curve consists of a single broad peak that continuously shifts toward higher temperatures when the sample is preheated up to increasing temperatures, thus indicating the presence of a continuous trap distribution. The glow curve fitting assuming different distribution functions shows how a gaussian distribution becomes a nearly exponential distribution owing to the thermal leakage of charge carriers from trapping centres.
Gómez-Ros
J M
JM
CIEMAT, Av. Complutense 22, Madrid 28040, Spain. jm.gomezros@ciemat.es
Correcher
V
V
García-Guinea
J
J
Delgado
A
A
D000538:Aluminum Silicates / Q000737:chemistry* / Q000528:radiation effects*; D003198:Computer Simulation; D017076:Computer-Aided Design; D004307:Dose-Response Relationship, Radiation; D004867:Equipment Design; D019544:Equipment Failure Analysis; D008422:Materials Testing; D008962:Models, Theoretical; D011829:Radiation Dosage; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D055672:Static Electricity; D013819:Thermoluminescent Dosimetry / Q000295:instrumentation* / Q000379:methods
D000538:Aluminum Silicates; C049037:aluminosilicate