Glow curve readout of LiF:Mg,Cu,P (GR-200) chips at maximum temperatures between 240°C and 280°C: Elimination of the residual signal

L. Oster, Y. S. Horowitz, A. Horowitz

Research output: Contribution to journalArticlepeer-review

32 Scopus citations

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 languageEnglish
Pages (from-to)407-411
Number of pages5
JournalRadiation Protection Dosimetry
Volume49
Issue number4
DOIs
StatePublished - 1 Jan 1993

ASJC Scopus subject areas

  • Radiation
  • Radiological and Ultrasound Technology
  • Radiology Nuclear Medicine and imaging
  • Public Health, Environmental and Occupational Health

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