Study of Thermal Treatment and Kinetic Parameters of Prepared Li2B4O7: Cu Thermoluminescence Dosimeter

Different concentrations from copper were added to lithium borate, as
a doping material to get a good dosimeter compatible with the commercial one.
It was found that the gradual addition of Cu to Li2B4O7 causes gradual
enhancement in the TL intensity up to a concentration value of 0.023 wt%,
above that a draw back on the TL intensity occurs. It was also found that for
preparation of this dosimeter the optimum sintering temperature was 850°C for
1 hour followed by quenching in liquid nitrogen. The use of liquid nitrogen as a
cooling agent after the sintering treatment increases the phosphor sensitivity
with about 4 times. Moreover, the kinetic parameters of the main peak of
Li2B4O7:Cu phosphor was calculated and it stood in good agreement with the
previous work. So, Li2B4O7:Cu phosphor can be prepared in the laboratory
with high quality and can be used for radiation protection dosimetry
applications.