• Journal of Radiation Research and Radiation Processing
  • Vol. 42, Issue 6, 060209 (2024)
Jingfeng CHANG1, Guanghua ZHANG1, Guozhong WU2, Rongfang SHEN2, Kaifeng DONG1, and Kanghai ZHENG1、*
Author Affiliations
  • 1Shanghai Jinpengyuan Irradiation Technology Co.,Ltd.,Shanghai 201707,China
  • 2Shanghai Institute of Applied Physics,Chinese Academy of Sciences,Shanghai 201800,China
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    DOI: 10.11889/j.1000-3436.2024-0106 Cite this Article
    Jingfeng CHANG, Guanghua ZHANG, Guozhong WU, Rongfang SHEN, Kaifeng DONG, Kanghai ZHENG. Investigating the performance of polytetrafluoroethylene solid free radical dosimeter[J]. Journal of Radiation Research and Radiation Processing, 2024, 42(6): 060209 Copy Citation Text show less

    Abstract

    This study leverages the ability of polytetrafluoroethylene (PTFE) to generate stable free radicals under ionizing radiation to develop a solid PTFE dosimeter sheet. Experimental results indicate a strong positive correlation between free radical response and absorbed dose over a broad range (1-180 kGy). The performance of the dosimeter was minimally influenced by dose rate and energy dependence,while the effects of irradiation temperature and post-irradiation storage time on free-radical decay exhibited clear and consistent patterns. Unlike conventional dosimeters used in the industry,the PTFE dosimeter is suitable for high-dose measurements and calibrations,covering a range of 1-180 kGy with a total uncertainty of less than 5.02%,demonstrating high metrological reliability. This study provides valuable insights into precise dose control and calibration in the irradiation processing of polymers and other functional materials.
    Jingfeng CHANG, Guanghua ZHANG, Guozhong WU, Rongfang SHEN, Kaifeng DONG, Kanghai ZHENG. Investigating the performance of polytetrafluoroethylene solid free radical dosimeter[J]. Journal of Radiation Research and Radiation Processing, 2024, 42(6): 060209
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