The study of possibility to use Surface Mount Device Resistor in personal computer for determination of accidental dose through Thermoluminescence methods

Abstract

       In case of accidental radiation exposure of population, retrospective dosimetry is one of the most important techniques for measuring the irradiated dose in contaminated areas. Many common materials can be used as an accidental dosimeter. In this paper, the possibility to use Surface Mount Devices (SMD) resistors in the electronic circuit boards of personal computer were discussed through their thermoluminescence (TL) properties. The TL sensitive component of SMD is the alumina porcelain substrate. It was observed that the resistor irradiated with 160 keV X-ray exhibits a linear dose response in the dose range of 10 to 80 mGy, a proper glow curve peaks at about 150°C, a 40% fading of TL signal after storing for one month at room temperature and a very low minimum detectable dose of about 0.2 mGy. This makes SMD resistor suitable for accidental dosimeter in the case of small leakage accidental radiation.