A simple UV and gamma radiation optical dosimeter is presented. The organic
dye degradation with radiation absorption is used to measure the radiation
dose. The design, the electronic circuit, the calibration and the operatio
n procedure are also described in detail. Finally, the results of actual ap
plications are shown with beta-carotene in an acetone/ethanol solution util
ised as an optical probe. (C) 1999 Elsevier. Science Ltd. All rights reserv
ed.