Abstract
A NUMBER of chemical systems have been employed for the measurement of the quantity of ionizing radiation. Among the most sensitive dosimeters are those employing dyes1. One system utilizes the destruction of a dye2,3 and another the production of a coloured dye by transformation of the leuco form4. These systems are not particularly sensitive and, for a 1-mm. thick sample, would require the order of 103–104 roentgens to give a perceptible effect. During the course of our studies on the photochemistry of thiazine dyes in rigid media5 we noticed that leuco forms of these dyes produced photochemically give a red species with ultra-violet light irradiation and a blue colour (normal form of the dye) with ionizing radiation. This latter effect is extremely sensitive, and we have pursued the matter further with the view of developing a sensitive dosimeter for ionizing radiation.
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Broyde, B., and Oster, G., J. Amer. Chem. Soc. (in the press).
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OSTER, G., BROYDE, B. A Sensitive Chemical Dosimeter for Ionizing Radiation. Nature 184, 545 (1959). https://doi.org/10.1038/184545a0
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DOI: https://doi.org/10.1038/184545a0
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