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Monte Carlo simulation investigation on the minimum dimension of gamma reference radiation regulated by ISO 4037–1

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Abstract

In the latest version of ISO 4037–1:2019 standard, the irradiation facility of a gamma radiation emitted by radionuclides is required to be collimated geometry installation. However, there is no clear requirements to determine the dimension of a minimum standard radiation field in the standard. Under the application demand of a movable gamma reference radiation, this paper presents the Monte Carlo simulation study on the gamma radiation field generated by collimated geometry installation with 1 Ci Co-60 and 1 Ci Cs-137 respectively. The distributions of dose rates and energy in the field were simulated in detail with the change of the reference radiation physical dimension. According to the work, the boundary dimension of the radiation field is obtained under the requirement that the influence of scattered photons in the radiation field shall not exceed 5%. This paper establishes and perfects the research methods and related standard details of the minimum dimension of the gamma reference radiation field, which provides reference data for the design of the irradiation room under the collimated radiation state.

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Acknowledgements

This work was supported by the National Key R&D Program of China under grant 2019YFC0605203, in part by National Natural Science Foundation of China under Grant 11805111, in part by the Fundamental Research Funds for the Central Universities under Grant 2019CDYGYB019 and 2020CDJ-LHZZ-075, in part by Chongqing Basic Research and Frontier Exploration Project (cstc2020jcyj-msxmX0553).

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Authors and Affiliations

  1. Key Laboratory of Optoelectronic Technology & Systems, Ministry of Education, Chongqing University, Chongqing, 400044, China

    Yi-kun Qian, Peng Feng, Guo-lu Yin, Song Zhang & Biao Wei

  2. Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang, 621900, China

    Yi-kun Qian, Song Zhang, Ben-jiang Mao & Yi-xin Liu

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  1. Yi-kun Qian
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  2. Peng Feng
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  3. Guo-lu Yin
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  4. Song Zhang
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  5. Biao Wei
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  6. Ben-jiang Mao
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  7. Yi-xin Liu
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Correspondence to Yi-xin Liu.

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Qian, Yk., Feng, P., Yin, Gl. et al. Monte Carlo simulation investigation on the minimum dimension of gamma reference radiation regulated by ISO 4037–1. Eur. Phys. J. Plus 136, 855 (2021). https://doi.org/10.1140/epjp/s13360-021-01868-0

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