Effect of dopants’ concentration on high-dose high-temperature thermoluminescence of LiF:Mg,Cu,P detectors: Mg and Cu influence

Abstract

HIGHLIGHTS• Variation of dopants' concentration is influencing the shape of glow-curve.• Magnesium presence is crucial for occurrence of the TL peak 'B'.• Mg influences the shape of the glow curve and high-temperature peaks intensity.• Cu influences high-temperature peaks intensity mainly. AbstractIn 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.