“study of Electron Paramagnetic Resonance (epr) / Electron Spin Resonance (esr) Dosimetry in Fingernails as a Method for Assessing Dose of Victims of Radiological

The most significant problem of electron paramagnetic resonance fingernail dosimetry is the presence of two signals of non-radiation origin that overlap the radiationinduced signal (RIS), making it almost impossible to perform dose measurements below 5 Gy. Historically, these two non-radiation components were named mechanicallyinduced signal (MIS) and background signal (BKS). In order to investigate them in detail, three different methods of MIS and BKS mutual isolation have been developed and implemented. Having applied these methods, it is shown here that fingernail tissue, after cut, can be modeled as a deformed sponge, where the MIS and BKS are associated with the stress from elastic and plastic deformations, respectively. A sponge has a unique mechanism of mechanical stress absorption, which is necessary for fingernails in order to perform its everyday function of protecting the fingertips from hits and trauma. Like a sponge, fingernails are also known to be an effective water absorber. When a sponge is