The effect of temperature on g-effective values of soda-lime samples irradiated at different doses

Vojnić Kortmiš, Maja; Maltar-Strmečki, Nadica (2020) The effect of temperature on g-effective values of soda-lime samples irradiated at different doses. Radiation physics and chemistry, 170 . ISSN 0969-806X

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Abstract

Electron spin resonance (ESR) dosimetry aims to investigate different materials for the purpose of reconstruction of the dose absorbed by the victims of radiological and nuclear accidents. The soda-lime glass is very popular as retrospective dosimeter due its availability. In the dose range below 2 Gy soda-lime glass ESR signal of radiation induced radicals overlaps with the background ESR signal and limit the dose reconstruction. Recently it was shown that the behavior of g-effective value is useful tool for dose reconstruction for triage application. Therefore, in this research, effects of temperature on the time stability of the g- effective values, the temperature dependence of the g-effective values and on the previously proposed g-effective approach were studied. The time stability was tested for the temperatures 200 K and 300 K. The g-effective values remained unchanged at both sample temperatures within 2 months after irradiation. The temperature dependence of the g-effective values was investigated in the range from 180 K to 300 K for the samples irradiated with doses 0.3, 0.5, 0.7, 1, 2 and 5 Gy. The results show that temperature of the sample is not influencing the g-effective value. Furthermore, all of the samples exhibit previously proven approach for the g-effective value exponential dependence on the dose. The temperature dependence of the approach was investigated within temperature range from 200 K to 300 K and the results are consistent with previous research. This proves that g – effective value is stable parameter with temperature and within 2 months after irradiation and therefore useful for application in retrospective dosimetry.

Item Type:	Article
Uncontrolled Keywords:	Soda-lime glass ; ESR ; Retrospective dosimetry ; g-effective value ; Temperature dependence
Subjects:	NATURAL SCIENCES > Physics NATURAL SCIENCES > Physics > Biophysics and Medical Physics NATURAL SCIENCES > Chemistry BIOMEDICINE AND HEALTHCARE > Public Health and Health Care BIOMEDICINE AND HEALTHCARE > Public Health and Health Care > Public Health
Divisions:	Division of Physical Chemistry
Depositing User:	Nadica Maltar Strmečki
Date Deposited:	08 Jun 2021 08:03
URI:	http://fulir.irb.hr/id/eprint/6442
DOI:	10.1016/j.radphyschem.2019.108665

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