Study of thermoluminescence dosimetric properties of submicron BaSO4 phosphor

Dosimetric properties of submicron BaSO4:Eu phosphor have been studied. Top down approach (ball billing) has been adopted to reduce the grain size of the material to submicron level. Phosphor showed good thermoluminescence (TL) properties. The TL properties of the phosphor were altered due to the particle size reduction on ball milling. Ball milling affected the kinetics of TL Processes. TL dose response of the phosphor has been linearly increased upto 4 kGy on ball milling which makes it useful in high dose dosimetric applications.