APPLICATION OF WHOLE-BODY PERSONAL TL DOSEMETERS IN MIXED FIELD BETA-GAMMA RADIATION

摘要

Application of whole-body personal TL dosemeters based on a high-sensitivity LiF:Mg,Cu,P (MCP-N) in mixed field beta-gamma radiation has been characterised. The measurements were carried out with ~(90)Sr/~(90)Y, ~(85)Kr and ~(137)Cs point sources to calculate the energy response and linearity of the TLD response in a dose range of 0.1-30 mSv. From the result, calibration curves were obtained, enabling the readout of individual dose equivalent H_p(10) from gamma radiation and H_p(0.07) from beta radiation in mixed field beta-gamma. Limitation of the methodology and its application are presented and discussed.