Effect of heating rate on kinetic parameters of β-irradiated Li2B4O7:Cu,Ag,P in TSL measurements
Makaleler > Tam Makale · 2007
Yazarlar: A (Türkler) Ege, E Ekdal, T Karali, N Can, M Prokić
Measurement Science and Technology, Uluslararası, Wos, 2007, cilt 18, ss 889-892
DOI: 10.1088/0957-0233/18/3/043
Özet
The effect of heating rate on the thermally stimulated luminescence (TSL) emission due to the temperature lag (TLA) between the TSL material and the heating element has been investigated using Li 2 B 4 O 7 :Cu,Ag,P dosimetric materials. The TLA becomes significant when the material is heated at high heating rates. TSL glow curves of Li 2 B 4 O 7 :Cu,Ag,P material showed two main peaks after β-irradiation. The kinetic parameters, namely activation energy ( E ) and frequency factor ( s ) associated with the high temperature main peak of Li 2 B 4 O 7 :Cu,Ag,P were determined using the method of various heating rates (VHR), in which heating rates from 1 to 40 K s −1 were used. It is assumed that non-ideal heat transfer between the heater and the material may cause significant inconsistency of kinetic parameter values obtained with different methods. The effect of TLA on kinetic parameters of the dosimeter was examined.