On the reassessment of doses in TL-dosimetry by measuring the residual dose

A. Abraham, M. Weinstein, U. German, Z. B. Alfassi

Research output: Contribution to journalArticlepeer-review

4 Scopus citations


Second readouts and the photo-transferred thermoluminscence (PTTL) method are sometimes used to reassess high doses. When using the common LiF:Mg,Ti, if the second readout is performed by a regular readout cycle of 13.3 s, its efficiency is low and the estimations cannot be obtained with acceptable accuracy for low doses in the 10-100 mSv range. By applying the PTTL method, the efficiency is much higher, but a high background is also present, deteriorating the quality of the reassessment. A simple and efficient method was studied, which consists of expanding the heating time to 30 s. Although the efficiency relative to a standard readout is improved by only a factor of 3, the low background enables to obtain results with the same uncertainty as the more complicated PTTL method. By applying region of integration discrimination, the errors can be further diminished.

Original languageEnglish
Pages (from-to)113-116
Number of pages4
JournalRadiation Protection Dosimetry
Issue number1-4
StatePublished - 1 Dec 2007

ASJC Scopus subject areas

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


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