USE OF TETRAZOLIUM SALTS IN DOSIMETRY OF IONIZING-RADIATION

The paper summarizes the results obtained with participation of the au thors from the study on the use of liquid and solid solutions of tetra zolium salts of different origin for dosimetry of ionizing radiation. The dosimetric systems based on the aerated solutions of some tetrazol ium salts with nitro groups (for example, 2-(p-nitrophenyl)-3,5-diphen yltetrazolium chloride) in water-alcohol mixture which are suitable fo r measurement of doses from 1-5 to 50 Gy are described in detail. The application of poly(vinyl alcohol) films containing different tetrazol ium salts for determination of doses from 0.5-25 kGy is considered tho roughly. The special attention was paid to the development of the film s as color dose indicators with comparatively high stability to the ac tion of day-light. It was achieved with the film containing -bianisile ne-4,4'-bis(2,5-diphenyl-2H-tetrazolium) chloride (blue tetrazolium).