The LiF dosemeter presents two main glow peaks, one at 21O'c and the other at a temperature between 250 and 3 0 0 ' ~. It is shown that the two-peak ratio depends on the type of incident radiation. This characteristic makes it possible to use LiF to measure doses in mixed fields (slow neutrons and electromagnetic radiations). The method is reliable for personal dosimetry.

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The historical development of international standards for dosemeters and readers by the International Standards Organisation and International Electrotechnical Commission, respectively, is traced. The likely way ahead in the development of standards for thermoluminescence dosimetry systems is also discussed.