Relationships between protection and operational dosimetric quantities for external exposure to natural background radiation.

IF 1.5 4区环境科学与生态学 Q3 BIOLOGY

Radiation and Environmental Biophysics Pub Date : 2025-03-01 Epub Date: 2025-02-14 DOI:10.1007/s00411-025-01109-3

A Ulanowski, T Sato, N Petoussi-Henss, M Balonov

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Abstract

Protection and operational dosimetric quantities for human external exposure have been compared for situations of outdoor exposure to natural background radiation represented by gamma radiation of primordial and cosmogenic radionuclides and by radiations produced by the galactic cosmic rays in the Earth atmosphere. Calculations were performed using the data from publications of the International Commission on Radiation Units and Measurements and the International Commission on Radiological Protection for global geographical grid of marine and terrestrial locations. Using modelled fluence spectra of natural cosmogenic and terrestrial background radiation, the ratios of the protection to operational quantities were calculated, demonstrating the effect of high-LET neutron component on the ratios of effective dose to absorbed dose, air kerma and the operational quantities. The influence of the neutron component was found to be stronger for high-altitude terrestrial locations and for terrestrial and marine locations at higher geographic latitudes. The computed ratios can be used for interpretation of the measured ambient dose rate data and calculation of effective doses in radiological protection tasks or assessment of public exposure to natural and anthropogenic sources of radiation.

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自然本底辐射外部照射的防护量与工作剂量学量之间的关系。

对人体外部照射的防护量和操作剂量学量进行了室外照射自然本底辐射情况的比较，自然本底辐射以原始和宇宙产生的放射性核素的伽马辐射和地球大气层中银河宇宙射线产生的辐射为代表。使用国际辐射单位和测量委员会（ICRU）第43号报告：确定来自外部辐射源的剂量当量-第2部分的出版物中的数据进行了计算。J ICRU os-22(2), 1988)， ICRU（外部辐射暴露的操作量）。ICRU报告95。J ICRU 20(1), 2020)和国际辐射防护委员会关于海洋和陆地位置的全球地理网格。利用模拟的自然宇宙和地面背景辐射通量谱，计算了防护量与工作量之比，证明了高let中子成分对有效剂量与吸收剂量之比、空气可马赫和工作量的影响。发现中子成分的影响在高海拔陆地位置和地理纬度较高的陆地和海洋位置更强。计算出的比率可用于解释测量到的环境剂量率数据和计算辐射防护任务中的有效剂量，或评估公众暴露于自然和人为辐射源的情况。

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来源期刊

Radiation and Environmental Biophysics 环境科学-核医学

CiteScore

4.00

自引率

5.90%

发文量

审稿时长

>36 weeks

期刊介绍： This journal is devoted to fundamental and applied issues in radiation research and biophysics. The topics may include: Biophysics of ionizing radiation: radiation physics and chemistry, radiation dosimetry, radiobiology, radioecology, biophysical foundations of medical applications of radiation, and radiation protection. Biological effects of radiation: experimental or theoretical work on molecular or cellular effects; relevance of biological effects for risk assessment; biological effects of medical applications of radiation; relevance of radiation for biosphere and in space; modelling of ecosystems; modelling of transport processes of substances in biotic systems. Risk assessment: epidemiological studies of cancer and non-cancer effects; quantification of risk including exposures to radiation and confounding factors Contributions to these topics may include theoretical-mathematical and experimental material, as well as description of new techniques relevant for the study of these issues. They can range from complex radiobiological phenomena to issues in health physics and environmental protection.