Monte Carlo Simulation of H*(10)/Kα Conversion Coefficients of 15 keV~1.5 MeV Single Energy Photons and Narrow Spectrum Series
Ambient dose equivalent is the calibration quantity and type inspection quantity of environmental and workplace radiation monitoring instrument. The conversion coefficient from air kerma to ambient dose equivalent recommended in ISO 4037-2 is suitable for “matched reference fields”. Due to the diffe...
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| Format: | Article |
| Language: | zho |
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Editorial Board of Journal of Isotopes
2022-08-01
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| Series: | Journal of Isotopes |
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| Online Access: | http://www.tws.org.cn/CN/10.7538/tws.2021.youxian.093 |
| _version_ | 1811219985151819776 |
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| author | XU Yang;GAO Fei;ZHAO Rui;LIN Min;NI Ning;WEI Kaidi |
| author_facet | XU Yang;GAO Fei;ZHAO Rui;LIN Min;NI Ning;WEI Kaidi |
| author_sort | XU Yang;GAO Fei;ZHAO Rui;LIN Min;NI Ning;WEI Kaidi |
| collection | DOAJ |
| description | Ambient dose equivalent is the calibration quantity and type inspection quantity of environmental and workplace radiation monitoring instrument. The conversion coefficient from air kerma to ambient dose equivalent recommended in ISO 4037-2 is suitable for “matched reference fields”. Due to the different X-ray tube type and overall structure of X and γ-ray irradiation devices in different standard laboratories, the photon spectrum distribution is different from the nominal reference field, and then the conversion coefficient is deviated. In this paper, MCNP5 program is used to establish the model of irradiation device, and the corresponding conversion coefficients of 15 keV~1.5 MeV single energy photon and N-40~N-200 narrow spectrum series are calculated. The ambient dose equivalent rate at reference point of radiation field is determined by self-developed H*(10) secondary standard ionization chamber and compared with the conversion coefficient method. The results show that the relative deviation between the calculated and recommended value of conversion coefficient in ISO 4037-3 is within ±4%. The relative deviation between the secondary standard chamber method and conversion coefficient method is within 3%, which prove that the Monte Carlo method for calculating H*(10)/Kα conversion coefficient is feasible. For “unmatched reference radiation field”, this method can be used to determine ambient dose equivalent. |
| first_indexed | 2024-04-12T07:34:52Z |
| format | Article |
| id | doaj.art-af84a292079c41b686b5671e8a3bc4cd |
| institution | Directory Open Access Journal |
| issn | 1000-7512 |
| language | zho |
| last_indexed | 2024-04-12T07:34:52Z |
| publishDate | 2022-08-01 |
| publisher | Editorial Board of Journal of Isotopes |
| record_format | Article |
| series | Journal of Isotopes |
| spelling | doaj.art-af84a292079c41b686b5671e8a3bc4cd2022-12-22T03:41:59ZzhoEditorial Board of Journal of IsotopesJournal of Isotopes1000-75122022-08-01354311316Monte Carlo Simulation of H*(10)/Kα Conversion Coefficients of 15 keV~1.5 MeV Single Energy Photons and Narrow Spectrum SeriesXU Yang;GAO Fei;ZHAO Rui;LIN Min;NI Ning;WEI Kaidi 0China Institute of Atomic Energy, Division of Radiation Metrology；National Institute of MetrologyAmbient dose equivalent is the calibration quantity and type inspection quantity of environmental and workplace radiation monitoring instrument. The conversion coefficient from air kerma to ambient dose equivalent recommended in ISO 4037-2 is suitable for “matched reference fields”. Due to the different X-ray tube type and overall structure of X and γ-ray irradiation devices in different standard laboratories, the photon spectrum distribution is different from the nominal reference field, and then the conversion coefficient is deviated. In this paper, MCNP5 program is used to establish the model of irradiation device, and the corresponding conversion coefficients of 15 keV~1.5 MeV single energy photon and N-40~N-200 narrow spectrum series are calculated. The ambient dose equivalent rate at reference point of radiation field is determined by self-developed H*(10) secondary standard ionization chamber and compared with the conversion coefficient method. The results show that the relative deviation between the calculated and recommended value of conversion coefficient in ISO 4037-3 is within ±4%. The relative deviation between the secondary standard chamber method and conversion coefficient method is within 3%, which prove that the Monte Carlo method for calculating H*(10)/Kα conversion coefficient is feasible. For “unmatched reference radiation field”, this method can be used to determine ambient dose equivalent.http://www.tws.org.cn/CN/10.7538/tws.2021.youxian.093ambient dose equivalenth*(10)/kα conversion coefficientmonte carloh*(10) secondary standard ionization chamberenergy compensation |
| spellingShingle | XU Yang;GAO Fei;ZHAO Rui;LIN Min;NI Ning;WEI Kaidi Monte Carlo Simulation of H*(10)/Kα Conversion Coefficients of 15 keV~1.5 MeV Single Energy Photons and Narrow Spectrum Series Journal of Isotopes ambient dose equivalent h*(10)/kα conversion coefficient monte carlo h*(10) secondary standard ionization chamber energy compensation |
| title | Monte Carlo Simulation of H*(10)/Kα Conversion Coefficients of 15 keV~1.5 MeV Single Energy Photons and Narrow Spectrum Series |
| title_full | Monte Carlo Simulation of H*(10)/Kα Conversion Coefficients of 15 keV~1.5 MeV Single Energy Photons and Narrow Spectrum Series |
| title_fullStr | Monte Carlo Simulation of H*(10)/Kα Conversion Coefficients of 15 keV~1.5 MeV Single Energy Photons and Narrow Spectrum Series |
| title_full_unstemmed | Monte Carlo Simulation of H*(10)/Kα Conversion Coefficients of 15 keV~1.5 MeV Single Energy Photons and Narrow Spectrum Series |
| title_short | Monte Carlo Simulation of H*(10)/Kα Conversion Coefficients of 15 keV~1.5 MeV Single Energy Photons and Narrow Spectrum Series |
| title_sort | monte carlo simulation of h 10 kα conversion coefficients of 15 kev 1 5 mev single energy photons and narrow spectrum series |
| topic | ambient dose equivalent h*(10)/kα conversion coefficient monte carlo h*(10) secondary standard ionization chamber energy compensation |
| url | http://www.tws.org.cn/CN/10.7538/tws.2021.youxian.093 |
| work_keys_str_mv | AT xuyanggaofeizhaoruilinminniningweikaidi montecarlosimulationofh10kaconversioncoefficientsof15kev15mevsingleenergyphotonsandnarrowspectrumseries |