| Autor: |
VANEK, MIROSLAV, SALVA, JOZEF, ĎURICOVÁ, ANNA, DARABOŠOVÁ, ANNA |
| Zdroj: |
Acta Facultatis Ecologiae; 2021, Vol. 45 Issue 2, p29-38, 10p |
| Abstrakt: |
Radioactivity in building materials is a major concern in radiation protection, in order to control the indoor exposure of individuals. External exposure is caused by gamma and beta radiation from radionuclides in building materials, while internal exposure is caused by inhalation of radon and its progeny in the indoor air. Levels of external exposure are limited by legislation requirements. Mass activity of natural radionuclides and activity concentration index are regularly being determined and agreement with the requirements is evaluated. Gamma spectrometry is the most common method, as it reliable and requires relatively simple sample preparation. Either semiconductor detectors (HPGe) or scintillation detectors (NaI(Tl) can be used to measure gamma ray spectrum. While both are routinely used for this purpose, they have significantly different properties, advantages and disadvantages. This paper aims at comparison between these two types of detectors, with regard to their use for determination of naturally occurring radionuclides activity in building materials. The paper does not claim a complete and exhaustive analysis of the issue, rather, it deals with selected aspects of the issue on the example of a specific analysis. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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