Effect of temperature and ionizing radiation on the Eu-Mn pair in NaCl

In the present paper photoluminescence measurements have been carried out in single crystals of NaCl doubly doped with Eu2+ and Mn2+ ions in order to determine the influence of annealing temperature and ionizing radiation on the Eu-Mn pairs which are formed preferentially in this material. From the results obtained it appears that the NaCl:Eu:Mn system may be employed not only as a good device for optical conversion of U.V. light into visible, being sure that its efficiency is not affected by the aggregation-precipitation processes of the manganese ions occurring in the matrix, but also as an efficient photo-luminescence dosimeter. (author)