TL dosimetry of nanocrystalline Li2B4O7:Cu exposed to 150Â MeV proton, 4Â MeV and 9Â MeV electron beam

Nanocrystals of the Li2B4O7:Cu were synthesized by a combustion method using 1000 ppm and 2500 ppm concentrations of Cu. TL characteristics of the synthesized Li2B4O7:Cu material doped with Cu of concentration 1000 ppm and 2500 ppm were studied using 150 MeV proton beam, 4 MeV and 9 MeV electron beam. It is observed that Li2B4O7:Cu doped with Cu (both 1000 ppm and 2500 ppm) exhibits a linear response in the range 1×100-3×101 Gy for exposure to 150 MeV proton beam. Nanocrystalline Li2B4O7:Cu, doped with 1000 ppm and 2500 ppm Cu, shows a linear TL response in the range 1×10−1-1×101 Gy for 4 MeV and 9 MeV electron beam. Fading of phosphors was also studied and it was found that Li2B4O7:Cu is quite suitable for proton and electron beam dosimetry.