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h i g h l i g h t sLi 2 B 4 O 7 :Cu as a personal dosimetry was firstly investigated by OSL techniques. Prepared phosphor has good OSL repeatability. Beta dose can be determined with less than 3e4% error by using OSL technique. This is the first study on dose measurement of Li 2 B 4 O 7 :Cu using OSL technique. a b s t r a c t Dosimetric phosphors of Cu-doped lithium tetraborate (Li 2 B 4 O 7 :Cu) were produced using a sintering technique in a laboratory environment and characterized using Scanning Electron Microscopy (SEM) and X-ray Diffractometry (XRD). The thermoluminescence (TL) and optically stimulated luminescence (OSL) properties of powdered (Li 2 B 4 O 7 ) phosphor doped with copper at different concentrations (0.020 e0.025 wt %) were studied. The Cu-doped Li 2 B 4 O 7 phosphor material has two dominant TL glow peaks, and the maximum TL responses of the peaks are at 115 C and 243 C in the range of 0 Ce310 C. The TL response of the Cu-doped lithium tetraborate is approximately 900 times more sensitive than undoped lithium tetraborate. The TL and OSL signal intensities increase as the beta radiation doses increase up to approximately 150.00 Gy and 76.50 Gy, respectively. The OSL doseeresponse curve is linear up to a dose range of 12.00 Gy for Cu-doped Li 2 B 4 O 7 dosimetric phosphors. The time-dependent fading behavior of the Cu-doped lithium tetraborate was found to be quite stable over long time durations. In addition, the repeatability of the OSL dose measurements were determined to be 2/3 lower compared to the TL measurements. The reproducibility of the OSL measurements was approximately 5%. Based on the TL and OSL results, the prepared phosphors can be used to measure beta doses ranging from 10 mGy to 150.00 Gy and 76.50 Gy, respectively, by using the TL and OSL techniques, with confidence limits of approximately 7% and 3e4%, respectively. a r t i c l e i n f o

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