Status of Electron and Gamma Dosimetry

Several dosimetric systems have gained acceptance mainly for use in radiation sterilization or in plastic processing. They include: Perspex, radiochromic dye films, cellulose triacetate films, ceric-cerous liquid ampules, ethanol-chlorobenzene liquid ampules, ferrous-sulfate (Fricke) liquid ampules, and calorimetry. Many other systems have been proposed in the literature for dosimetry, but only a few have reached a stage of development where they deserve special attention here: optical density measurement, measurement of free radical concentration in alanine by means of electron spin resonance, measurement of light upon dissolution of amino acids and sugars, measurement of optical density of polyethylene film, and measurement of optical density in potassium dichromate solution.