EURADOS WG10 2019 field test of retrospective dosimetry methods: The NRPI results of mobile phones and salt dosemeters.

Various methods of physical retrospective dosimetry based mainly on thermally and optically stimulated luminescence in daily-use items are employed to assess the dose after unplanned radiation exposure. The investigations are usually performed in laboratory conditions, but the situation will differ in a real scenario. This was the motivation for the field test organized by European Radiation Dosimetry Group and Running the European Network of Biological and Retrospective Physical Dosimetry. The field test was arranged outdoors, where phantoms equipped with mobile phones, payment cards, pieces of dental ceramics and enamel, salty snacks and salt dosemeters, cigarettes and textile bags were irradiated. This manuscript presents doses estimated at National Radiation Protection Institute, as one of participating laboratories, using mobile phones and salt dosemeters in comparison with reference values. When using glass from the display, acceptable agreement was achieved for emergency dosimetry purposes. Resistors and salt measurements led to a more significant overestimation, in the case of resistors up to five times the reference value.