{"title":"Determination of [formula omitted] source air kerma rate constant","authors":"Ngoc-Thiem LE, Tien-Hung Dinh, Minh-Cong Nguyen, Ngoc-Quynh Nguyen, Tuan-Anh Le, Van-Loat Bui, Thi-Dung Nguyen, Ngoc-Anh Nguyen, Hoai-Nam Tran, Thi-Minh-Thu Hoang, Thu-Trang Ngo, Thi-May Nguyen, Thi-Luyen Pham, Thi-My-Duyen Nguyen, Thi-Nga Dao, Lam-Oanh Nguyen","doi":"10.1016/j.radphyschem.2025.112518","DOIUrl":null,"url":null,"abstract":"Air kerma rate constant (<mml:math altimg=\"si2.svg\"><mml:mrow><mml:msub><mml:mi mathvariant=\"normal\">Γ</mml:mi><mml:mi mathvariant=\"normal\">δ</mml:mi></mml:msub></mml:mrow></mml:math>) of a <mml:math altimg=\"si1.svg\"><mml:mrow><mml:mmultiscripts><mml:mtext>Cs</mml:mtext><mml:mprescripts></mml:mprescripts><mml:none></mml:none><mml:mn>137</mml:mn></mml:mmultiscripts></mml:mrow></mml:math> source was evaluated in two different manners: (a) by calculation based on fluence-to-kerma conversion coefficient and (b) by measurements by different ionization chambers. Comparison between <mml:math altimg=\"si2.svg\"><mml:mrow><mml:msub><mml:mi mathvariant=\"normal\">Γ</mml:mi><mml:mi mathvariant=\"normal\">δ</mml:mi></mml:msub></mml:mrow></mml:math> values of the <mml:math altimg=\"si1.svg\"><mml:mrow><mml:mmultiscripts><mml:mtext>Cs</mml:mtext><mml:mprescripts></mml:mprescripts><mml:none></mml:none><mml:mn>137</mml:mn></mml:mmultiscripts></mml:mrow></mml:math> source, obtained from these two methods, shows the consistence within 0.5%. The combined standard uncertainties of these <mml:math altimg=\"si2.svg\"><mml:mrow><mml:msub><mml:mi mathvariant=\"normal\">Γ</mml:mi><mml:mi mathvariant=\"normal\">δ</mml:mi></mml:msub></mml:mrow></mml:math> values (<mml:math altimg=\"si3.svg\"><mml:mrow><mml:msub><mml:mi mathvariant=\"normal\">u</mml:mi><mml:msub><mml:mi mathvariant=\"normal\">Γ</mml:mi><mml:mi mathvariant=\"normal\">δ</mml:mi></mml:msub></mml:msub></mml:mrow></mml:math>) were also investigated, which were found as less than 2.0% and less than 6.0% for calculated and measured values, respectively. These <mml:math altimg=\"si2.svg\"><mml:mrow><mml:msub><mml:mi mathvariant=\"normal\">Γ</mml:mi><mml:mi mathvariant=\"normal\">δ</mml:mi></mml:msub></mml:mrow></mml:math> values were also compared with those from published data.","PeriodicalId":20861,"journal":{"name":"Radiation Physics and Chemistry","volume":"45 1","pages":""},"PeriodicalIF":2.8000,"publicationDate":"2025-01-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Radiation Physics and Chemistry","FirstCategoryId":"92","ListUrlMain":"https://doi.org/10.1016/j.radphyschem.2025.112518","RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
引用次数: 0
Abstract
Air kerma rate constant (Γδ) of a Cs137 source was evaluated in two different manners: (a) by calculation based on fluence-to-kerma conversion coefficient and (b) by measurements by different ionization chambers. Comparison between Γδ values of the Cs137 source, obtained from these two methods, shows the consistence within 0.5%. The combined standard uncertainties of these Γδ values (uΓδ) were also investigated, which were found as less than 2.0% and less than 6.0% for calculated and measured values, respectively. These Γδ values were also compared with those from published data.
期刊介绍:
Radiation Physics and Chemistry is a multidisciplinary journal that provides a medium for publication of substantial and original papers, reviews, and short communications which focus on research and developments involving ionizing radiation in radiation physics, radiation chemistry and radiation processing.
The journal aims to publish papers with significance to an international audience, containing substantial novelty and scientific impact. The Editors reserve the rights to reject, with or without external review, papers that do not meet these criteria. This could include papers that are very similar to previous publications, only with changed target substrates, employed materials, analyzed sites and experimental methods, report results without presenting new insights and/or hypothesis testing, or do not focus on the radiation effects.