Computerized glow curve deconvolution applied to ultralow dose LiF thermoluminescence dosimetry

Y. S. Horowitz, M. Moscovitch, M. Wilt

Research output: Contribution to journalArticlepeer-review

34 Scopus citations

Abstract

A computerized glow curve deconvolution technique (CGCD) and its application to the ultralow dose thermoluminescence (TL) glow curve of LiF:Mg, Ti (TLD-100) are described. The benefits in precision and minimum measurable dose (MMD) applied to TLD-100 are considerable. The CGCD analysis interpolatively estimates the background signal under peaks 4 and 5 which greatly reduces the errors introduced by inaccurate background subtraction due to second readout as well as eliminating the need for second readout. In addition, the error introduced via inaccurate separation of peak 3 is reduced and post-irradiation annealing is rendered unnecessary. An additional important feature of the CGCD method is the ability to reject/correct outliers in the glow curve. Assuming an MMD criterion of ±20% (1 SD) precision yields an MMD of 1.9 μGy (0.19 mrad) and 27 μGy (2.7 mrad) for CGCD and routine analysis respectively, i.e., an improvement in MMD of a factor 14.2.

Original languageEnglish
Pages (from-to)556-564
Number of pages9
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume244
Issue number3
DOIs
StatePublished - 1 Apr 1986

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Instrumentation

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