Charged particle dose measurement using infrared spectroscopy

Estimation of dose due to charged particles, mainly alphas, in cellulose triacetate has been made possible by using the technique of infrared spectroscopy. The method has been developed to the extent that such measurements may be extended to tissue or tissue-equivalent materials. The present technique employs the changes in the relative absorbability of infrared radiation in pre-irradiated foils. Optimum thickness of the foil for 4He2+ particles, of about 4.7 MeV energy, is employed in this investigation. The characteristics and the implications of such dose detection are briefly discussed in the paper. (author)