Abstract
Among the common TLD materials studied, Mg2SiO4:Tb was found to have the highest intrinsic TL sensitivity to UV radiation (wavelength 253.7 nm). The TL response of the dosimetric peak ( approximately 200 degrees C) of virgin Mg2SiO4:Tb was studied as a function of UV exposure in the range 10-104 J m-2. The UV-induced TL was not affected by room-light and no appreciable fading was observed up to 20 days after irradiation indicating that this is a promising TL phosphor for UV dosimetry. The UV sensitivity increases with increasing preliminary gamma exposure above 10-2 C kg-1 (after a post-irradiation anneal at 300 degrees C for 1 h). The degree of sensitisation is proportional to the intensity of the residual TL peak at 450 degrees C. Both virgin and gamma-exposed Mg2SiO4:Tb exhibit phosphorescence decay at room temperature after UV stimulation.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
