Radiation Accident Dosimetry on Electronic Components by Osl

Abstract

In the event of large-scale radiation accidents and considering a growing terrorism concern, non-invasive and sufficiently accurate retrospective dosimetry methods are necessary to carry out a fast population triage in order to determine which radiation-exposed individuals need medical treatment. Retrospective dosimetry using different electronic components such as resistors, capacitors, and integrated circuits present on mobile phone circuit boards have been considered. Their response has been investigated with luminescence techniques (OSL, IRSL, and TL). The majority of these electronic components exhibit radiation-induced luminescence signals, and the OSL technique seems the most promising for these materials. Results concerning three types of components that present the most interesting OSL characteristics (in terms of signal annealing and sensitivity) and that are the most often present on mobile phone circuit boards are presented. Preheating effects on OSL signal, sensitization, and dose-response curves from 0.7 to 27 Gy for resistors and from 0.7 to 160 Gy for capacitors and integrated circuits, dose recovery tests, and signal stability 10 h after irradiation have been studied and interests and limits of their use evaluated.

Retrospective and emergency dosimetry in response to radiological incidents and nuclear mass-casualty events: A review

“…A significant part of this appears to be due to thermal fading since, when the specimens are preheated, after irradiation and prior to OSL readout, the TL and OSL signals can be stabilized, showing only 10% fading for OSL over 1 week and negligible fading for TL over the same period. However, in contrast to the observations of Bassinet et al (2010b), loss of sensitivity for both OSL and TL occurs as a result of the pre-heat. selected a compromise pre-heat temperature of 130 °C.…”

“…As with SMRs, the fading of the signal appeared to follow a t −1 law, but they also concluded that a thermal component to the fading is present. Bassinet et al (2010b) show a non-linear, saturating type dose response for ICs, with approximate linearity at low doses. Pascu et al (2013) report a cubic dose response (although no data are shown).…”

Desiccants for retrospective dosimetry using optically stimulated luminescence (OSL)

“…Some of the most interesting materials are electronic components from portable devices (Bassinet et al, 2010;Woda et al, 2010;Inrig et al, 2008), chips from bank and telephone cards (Woda and Sp€ ottl, 2009;Mathur et al, 2007;G€ oksu, 2003), household salt (Bernhardsson et al, 2009;Christiansson et al, 2012), and dental repair materials (Geber-Bergstrand et al, 2012;Veronese et al, 2010). The present study investigates the dosimetric properties of different desiccants for their possible use as fortuitous dosemeters.…”

Comparative measurements of external radiation exposure using mobile phones, dental ceramic, household salt and conventional personal dosemeters

“…Mobile phones contain printed circuit boards with integrated electronic components including various ceramic materials exhibiting radiation-induced luminescence (Beerten and Vanhavere, 2008;Bassinet et al, 2010;Inrig et al, 2008). As most people possess a mobile phone and often keep it close to the body, mobile phones are suitable dosimetry objects for the general public.…”