EPR dosimetry in glass: a review

Comparison of three methods of EPR retrospective dosimetry in watch glass

“…Quantitative analysis of the spectra (alignment and normalization of their amplitudes to the standard's lines and sample mass, subtractions of the empty tube spectrum, averaging, numerical decompositions of the spectra) was carried out using Microsoft Office Excel 2016. Numerical fitting/decomposition of the experimental spectra into the BG and RIS components, as described in Marciniak et al ( 12 ), was performed using the Reglinp procedure in Excel.…”

“…One of such retrospective methods is based on electron paramagnetic resonance (EPR), which involves the detection and quantification of EPR signals from stable free radicals generated by ionizing radiation. So far, various materials have been studied, both biological, like tooth enamel, bones or nails (1)(2)(3)(4)(5), as well as those present in humans' environment (1,(6)(7)(8)(9)(10)(11)(12)(13)(14). Materials that come into close contact with humans, such as the screen of a mobile phone or the glass of a watch, are particularly attractive.…”

Reflections on the future developments of research in retrospective physical dosimetry

“…This paper is not intended to provide recommendations on which method to use in specific scenarios (see for instance Refs. [4,5], nor to deeply review the methods, for which the reader is invited to read more focused publications [6][7][8][9][10][11] and especially the extensive review by ICRU [1]. There are some recent interesting applications of RD that deserve to be mentioned and followed, but will not be treated here because they are out of scope of the paper.…”

“…The evaluation of the glass RIS intensity is time consuming because the EPR spectrum is composed of several RIS components, a BGS, and a UV and visible light-induced signal (LIS) [74]. The spectrum evaluation is complicated by the different fading rate observed in different RIS components [10,75].…”

Assessment of Annual Effective Dose and Excess Lifetime Cancer Risk Due to Natural Background Radiation Levels in West Pokot, Kenya

“…In addition to natural sources, human activities like nuclear reactors, medical procedures, industries, and research introduce radiation into the environment (Adebiyi et al, 2021;Hu et al, 2010). Globally, humans receive an average dose of about 80% from natural sources and 20% from human-made sources (Ademola et al, 2014;Marciniak et al, 2022;Masok et al, 2015). Geological conditions affect radiation emissions, with higher levels found in igneous rocks like granite and lower levels in sedimentary rocks, except for shale and phosphate rocks (Sanjurjo-Sánchez & Alves, 2017).…”