Response of HD-V2 radiochromic film to argon ions  

作　　者：Lei Cheng Zhe Zhang Guiyun Liang Yutong Li 程蕾;张喆;梁贵云;李玉同(Beijing National Laboratory for Condensed Matter Physics,Institute of Physics,Chinese Academy of Sciences(CAS),Beijing 100190,China;School of Physical Sciences,University of Chinese Academy of Sciences,Beijing 100049,China;Key Laboratory of Optical Astronomy,National Astronomical Observatories,Chinese Academy of Sciences,Beijing 100012,China;Songshan Lake Materials Laboratory,Dongguan 523808,China;CAS Center for Excellence in Ultra-intense Laser Science,Shanghai 201800,China)

机构地区：[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

出　　处：《Chinese Physics B》2021年第8期282-286,共5页中国物理B（英文版）

基　　金：Project supported by the National Natural Science Foundation of China(Grant Nos.U1930107 and 11827807);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 

分 类 号：O572[理学—粒子物理与原子核物理]