  In search of origin and mechanism of the high-dose high-temperature TL
emission with presence of the peak `B` about thirty batches of LiF:Mg,Cu,P
detectors with different dopants` concentration were produced and comprehensive
studies of their high-dose TL features have been performed. Within each step of
the research, these characteristics were compared with the high-dose TL
properties of the typical MCP-N detectors` batch highly exposed simultaneously
with the detectors from batches of varying dopants concentration. We determined
the effect of concentration of specific dopants on the TL peak `B`. It was
found that both magnesium and copper are necessary to obtain high-dose TL
signal, however, the important for high-dose TL features seems to be also
concentration of phosphorus. In the framework of this study we present results
of magnesium and copper concentration changes to the TL signal after high-doses
of electron radiation.

Instrumentation and Detectors