Abstract
The stability and residual signal of LiF:Mg,Cu,P (GR-200) chips was studied as a function of the maximum temperature of readout between 240°C and 280°C. With an initialisation-readout routine, we find that the sensitivity of the GR-200 chips remains stable within the statistical uncertainties following readout at 270°C for 12 s. Thirty cycles of readout result in only a 4% loss in sensitivity, or 0.13% loss in sensitivity per readout. The total residual signal is, however, decreased from 7% at 240°C to 0.6% at 270°C. GR-200 can, therefore be used without intermediate pre-irradiation, high temperature, annealing, with acceptable stability, and with an acceptable residual signal if read out to 270°C. It follows that the last perceived obstacle to the widespread acceptance of GR-200 for use in personal and environmental dosimetry has been eliminated.
Original language | English |
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Pages (from-to) | 407-411 |
Number of pages | 5 |
Journal | Radiation Protection Dosimetry |
Volume | 49 |
Issue number | 4 |
DOIs | |
State | Published - 1 Jan 1993 |
ASJC Scopus subject areas
- Radiation
- Radiological and Ultrasound Technology
- Radiology Nuclear Medicine and imaging
- Public Health, Environmental and Occupational Health