Acta Phys. -Chim. Sin. ›› 2016, Vol. 32 ›› Issue (4): 1012-1018.doi: 10.3866/PKU.WHXB201601045

• ARTICLE • Previous Articles     Next Articles

Radiation Response Behavior of a Diacetylene/Agarose Gel Dosimeter

Jian CHEN1,Xiao WANG1,2,Lei LI1,Guang ZENG1,Peng SUN3,Wei HUANG1,*()   

  1. 1 Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang 621900, Sichuan Province, P. R. China
    2 Institute of Mechanical Manufacturing Technology, China Academy of Engineering Physics, Mianyang 621900, Sichuan Province, P. R. China
    3 Institute of Nuclear Science and Technology, Sichuan University, Chengdu 610064, P. R. China
  • Received:2015-09-28 Published:2016-04-07
  • Contact: Wei HUANG E-mail:huangwei839@126.com
  • Supported by:
    the Science and Technology Development Foundation of China Academy of Engineering Physics(2013B0301035);National Natural Science Foundation of China(81301934)

Abstract:

A new diacetylene/agarose gel dosimeter composed of agarose gel as the carrier and diacetylene (10, 12-pentacosadiynoic acid) vesicles as the radiochromic agent was prepared and its response behavior to γ-radiation was studied. Ultraviolet-visible spectra showed that the main absorption peak was around 660 nm, and there was a distinct linear relationship (correlation coefficient R2 = 0.9942) between the absorbed dose and absorbance at 660 nm over the absorbed dose range from 500 to 2000 Gy. The diacetylene/agarose gel dosimeter exhibited the same dose response to γ-radiation and an electron beam without energy and dose rate dependency. Furthermore, the effects of temperature, diffusion, fractionated irradiation, and post-radiation on the dosimeter response were carefully investigated. The developed diacetylene/agarose gel dosimeter shows promise to measure the three-dimensional space dose within the range of 500-2000 Gy.

Key words: Agarose gel, Diacetylene vesicle, Radiation response, Radiochromic

MSC2000: 

  • O644