A unified analytical formula for indoor gamma dose assessment based on surface-density scaling

IF 2.2 3区环境科学与生态学 Q3 ENVIRONMENTAL SCIENCES

Journal of environmental radioactivity Pub Date : 2026-08-01 Epub Date: 2026-07-24 DOI:10.1016/j.jenvrad.2026.108117

F. Gharbi

{"title":"A unified analytical formula for indoor gamma dose assessment based on surface-density scaling","authors":"F. Gharbi","doi":"10.1016/j.jenvrad.2026.108117","DOIUrl":null,"url":null,"abstract":"<div><div>Accurate estimation of indoor gamma dose rates from natural radionuclides in building materials is essential for radiation protection. In this work, a unified analytical formula is developed based on a scaling law involving the surface density <span><math><mrow><mi>ρ</mi><mi>d</mi></mrow></math></span>, defined as the product of the density and thickness of the structural building materials (walls, floor, and ceiling). The results show that the proposed formula reproduces independent Geant4 simulation data, not used in its derivation, with high accuracy across low, intermediate, and high attenuation regimes. In comparison, existing formulas exhibit noticeable differences, particularly at low surface densities.</div><div>The proposed approach provides a simple, robust, and accurate analytical representation of Geant4 results, offering a practical alternative to computationally intensive Monte Carlo simulations by reproducing their results with high fidelity through a compact analytical expression.</div></div>","PeriodicalId":15667,"journal":{"name":"Journal of environmental radioactivity","volume":"298 ","pages":"Article 108117"},"PeriodicalIF":2.2000,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of environmental radioactivity","FirstCategoryId":"93","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0265931X26002328","RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2026/7/24 0:00:00","PubModel":"Epub","JCR":"Q3","JCRName":"ENVIRONMENTAL SCIENCES","Score":null,"Total":0}

引用次数: 0

Abstract

Accurate estimation of indoor gamma dose rates from natural radionuclides in building materials is essential for radiation protection. In this work, a unified analytical formula is developed based on a scaling law involving the surface density

ρ d

, defined as the product of the density and thickness of the structural building materials (walls, floor, and ceiling). The results show that the proposed formula reproduces independent Geant4 simulation data, not used in its derivation, with high accuracy across low, intermediate, and high attenuation regimes. In comparison, existing formulas exhibit noticeable differences, particularly at low surface densities.

The proposed approach provides a simple, robust, and accurate analytical representation of Geant4 results, offering a practical alternative to computationally intensive Monte Carlo simulations by reproducing their results with high fidelity through a compact analytical expression.

查看原文本刊更多论文

基于表面密度标度的室内伽马剂量评估统一分析公式。

准确估计建筑材料中天然放射性核素的室内伽马剂量率对辐射防护至关重要。在这项工作中，基于涉及表面密度ρd的标度定律，开发了一个统一的分析公式，定义为结构建筑材料（墙壁，地板和天花板）的密度和厚度的乘积。结果表明，所提出的公式再现了独立的Geant4模拟数据，而不是在其推导中使用，在低、中、高衰减区域具有很高的精度。相比之下，现有的公式表现出明显的差异，特别是在低表面密度下。该方法为Geant4结果提供了一种简单、稳健和准确的分析表示，通过紧凑的分析表达式以高保真度再现其结果，为计算密集型蒙特卡罗模拟提供了一种实用的替代方法。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Journal of environmental radioactivity 环境科学-环境科学

CiteScore

4.70

自引率

13.00%

发文量

209

审稿时长

73 days

期刊介绍： The Journal of Environmental Radioactivity provides a coherent international forum for publication of original research or review papers on any aspect of the occurrence of radioactivity in natural systems. Relevant subject areas range from applications of environmental radionuclides as mechanistic or timescale tracers of natural processes to assessments of the radioecological or radiological effects of ambient radioactivity. Papers deal with naturally occurring nuclides or with those created and released by man through nuclear weapons manufacture and testing, energy production, fuel-cycle technology, etc. Reports on radioactivity in the oceans, sediments, rivers, lakes, groundwaters, soils, atmosphere and all divisions of the biosphere are welcomed, but these should not simply be of a monitoring nature unless the data are particularly innovative.