COMPOSITION FOR RADIATION DOSE HISTORY INDICATOR

摘要

PROBLEM TO BE SOLVED: To obtain an indicator that can display radiation dose according to the clear change in hue and is not discolored even if it is stored for a long time. SOLUTION: In the composition for a radiation dose history indicator, a coloring electron-donor organic compound 0.01-50 pts.wt. and an active species generation organic compound 0.01-50 pts.wt. for coloring the electron donor organic compound by radiation contain a hydrophilic compound 0.0001-10 pts.wt. and a radiation absorber and/or radiation excitation fluorescent agent 0.1-100 pts.wt. based on a medium 100 pts.wt.