Above a critical temperature of 270°C, heating for even the order of seconds, leads to irreversible changes in the sensitivity and glow curve structure of LiF:MCP. This limitation suggests a potential disadvantage in the use of LIF:MCP at the high heating rates required for maximum throughput in personnel and environmental dosimetry. The maximum temperature of the glow peak is found to increase very rapidly from 210°C at 1.2 K.s-1 to 280-285°C at 20 K.s-1. Careful studies have been carried out in order to determine the effects of heating rates up to 15 K.s-1 on precision at low dose and reusability. It is concluded that LiF:MCP (GR-200) can be used at heating rates as high as 15 K.s-1 to a maximum temperature of 270°C for 12 s with, however, a residual signal of 2% under these conditions.
|Number of pages||4|
|Journal||Radiation Protection Dosimetry|
|State||Published - 1 Jan 1999|
ASJC Scopus subject areas
- Radiological and Ultrasound Technology
- Radiology Nuclear Medicine and imaging
- Public Health, Environmental and Occupational Health