APPLICATION OF MULTICRITERIA OPTIMIZATION TO THE DEVELOPMENT OF THERMOLUMINESCENT ANALYSIS - STUDY ON IRRADIATED HERBS

We have used the multiple criteria optimisation techniques to determin e the optimal utilization conditions of a thermoluminescence reader. A fter determination of the main factors (particule size, sample quantit y, heating rate, nitrogen flow), the modelisation has been made using a Doehlert matrix Study of the response equation, and the canonic equa tion, show that the optimums are different for the two experimental re sponses studied. The 'desirability' permits to transform this response s into a unique quantitative measure who represent the global quality of the compromise, expressed in a satisfactory percentage by reference s to the objectives. We can thus obtain the experimental value of fact ors who allowed a high difference between the thermoluminescence signa l of irradiated and unirradiated samples, and a low variation coeffici ent.