中国物理B ›› 2021, Vol. 30 ›› Issue (8): 80702-080702.doi: 10.1088/1674-1056/ac077f

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Response of HD-V2 radiochromic film to argon ions

Lei Cheng(程蕾)1,2, Zhe Zhang(张喆)1,4,†, Guiyun Liang(梁贵云)3, and Yutong Li(李玉同)1,2,4,5,‡   

  1. 1 Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences(CAS), Beijing 100190, China;
    2 School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China;
    3 Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China;
    4 Songshan Lake Materials Laboratory, Dongguan 523808, China;
    5 CAS Center for Excellence in Ultra-intense Laser Science, Shanghai 201800, China
  • 收稿日期:2021-05-14 修回日期:2021-05-31 接受日期:2021-06-03 出版日期:2021-07-16 发布日期:2021-08-09
  • 通讯作者: Zhe Zhang, Yutong Li E-mail:zzhang@iphy.ac.cn;ytli@iphy.ac.cn
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. U1930107 and 11827807) and the Strategic Priority Research Program of the Chinese Academy of Sciences (Grants Nos. XDA25030100, XDA25010000, and XDB16010200).

Response of HD-V2 radiochromic film to argon ions

Lei Cheng(程蕾)1,2, Zhe Zhang(张喆)1,4,†, Guiyun Liang(梁贵云)3, and Yutong Li(李玉同)1,2,4,5,‡   

  1. 1 Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences(CAS), Beijing 100190, China;
    2 School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China;
    3 Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China;
    4 Songshan Lake Materials Laboratory, Dongguan 523808, China;
    5 CAS Center for Excellence in Ultra-intense Laser Science, Shanghai 201800, China
  • Received:2021-05-14 Revised:2021-05-31 Accepted:2021-06-03 Online:2021-07-16 Published:2021-08-09
  • Contact: Zhe Zhang, Yutong Li E-mail:zzhang@iphy.ac.cn;ytli@iphy.ac.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. U1930107 and 11827807) and the Strategic Priority Research Program of the Chinese Academy of Sciences (Grants Nos. XDA25030100, XDA25010000, and XDB16010200).

摘要: A two-dimensional dose detector for ion beam is required in many high energy density physics experiments. As a solid detector, the GAFChromic film offers a good spatial resolution and dosimetric accuracy. For an absolute dose measurement, the relative effectiveness, which represents the darkening efficiency of the film to a radiation source, needs to be taken into consideration. In this contribution, the dose-response of HD-V2 to argon ions is presented for the first time. The calibration was taken over the dose range of 65 Gy-660 Gy with 8-keV argon ions. The response of net optical density is from 0.01 to 0.05. Triple-color dose-response functions are derived. The relative effectiveness for the argon ion beams is about 5%, much lower than that of protons and carbon ions. To explain this effect, the inactivation probability based on track theory of ion bombardment is proposed. Furthermore, a theoretical prediction of the relative effectiveness for single ion is presented, showing the dependence of the darkening efficiency on the atomic number and the incident energy of ions.

关键词: radiochromic film, dosimetry, ion bombardment, relative effectiveness

Abstract: A two-dimensional dose detector for ion beam is required in many high energy density physics experiments. As a solid detector, the GAFChromic film offers a good spatial resolution and dosimetric accuracy. For an absolute dose measurement, the relative effectiveness, which represents the darkening efficiency of the film to a radiation source, needs to be taken into consideration. In this contribution, the dose-response of HD-V2 to argon ions is presented for the first time. The calibration was taken over the dose range of 65 Gy-660 Gy with 8-keV argon ions. The response of net optical density is from 0.01 to 0.05. Triple-color dose-response functions are derived. The relative effectiveness for the argon ion beams is about 5%, much lower than that of protons and carbon ions. To explain this effect, the inactivation probability based on track theory of ion bombardment is proposed. Furthermore, a theoretical prediction of the relative effectiveness for single ion is presented, showing the dependence of the darkening efficiency on the atomic number and the incident energy of ions.

Key words: radiochromic film, dosimetry, ion bombardment, relative effectiveness

中图分类号:  (Charged-particle beam sources and detectors)

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