Irradiated integrated circuits dose-attenuation mapping using optically stimulated phosphors for packaging dosimetry

The feasibility of a dose mapping system using optically stimulated luminescent (OSL) phosphors is demonstrated. The OSL technique is briefly reviewed as well as its interest for calculation code calibration. The sensors and the reading apparatus are presented. An example of attenuation dose map obtained for a dual in line plastic package (DIL) is given and the results compared to calculations with the code EGS4 PRESTA. Results obtained by experiment and simulation are discussed as well as the potentialities of the method.