Implementing new recommendations for calibrating personal dosemeters.
This paper analyses the differences between the calibration procedures for personal dosemeters recommended by ICRU 47 and ISO 4037-3. The tissue equivalence of the PMMA and the ISO water slab phantoms are analysed by means of the Penelope Monte Carlo code for monoenergetic and filtered X ray photon beams and compared with the results of two other independent codes. The influence of the calibration method is also verified experimentally, both on a thermoluminescence and an electronic personal dosemeter. Good consistency between both calibration procedures is shown provided that a correction factor for backscatter differences between the PMMA and the ICRU phantom is introduced. The Monte Carlo simulation is used to determine this correction to a greater accuracy.
Ginjaume
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Institute of Energy Technology (INTE), Technical University of Catalonia (UPC), Diagonal 647, 08028 Barcelona, Spain. merce.ginjaume@upc.es
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D002138:Calibration; D003257:Consumer Product Safety; D006801:Humans; D016273:Occupational Exposure / Q000517:prevention & control; D019047:Phantoms, Imaging; D011835:Radiation Protection / Q000592:standards*; D011874:Radiometry / Q000295:instrumentation* / Q000592:standards*; D012680:Sensitivity and Specificity; D013030:Spain