| Download | - View final version: The IRS thermoluminescent dosimetry system (PDF, 479 KiB)
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| DOI | Resolve DOI: https://doi.org/10.4224/40003375 |
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| Author | Search for: Janovsky, I.; Search for: Ross, C. K.1 |
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| Affiliation | - National Research Council Canada
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| Sponsor | Search for: National Research Council Canada. Institute for National Measurment Standards. Ionizing Radiation Standards |
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| Format | Text, Technical Report |
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| Abstract | We have established a system consisting of a reader and two annealing ovens for measuring absorbed dose using thermoluminescent detectors (TLDs). This report describes the principal characteristics of the system as well as the results of measurements using LiF and CaF₂:Mn TLDs. The reader is a Victoreen model 2800M using an electrically heated planchet and a variable gain photomultiplier for integrating the light output from the TLD. We have carried out measurements which tests the performance of the reader from its detection limit to saturation. The TLDs are annealed in conventional, small volume laboratory ovens which have been equipped with auxiliary temperature controllers. We describe those characteristics of the anneal cycle which have an important impact on TLD performance. We have measured the supralinearity of LiF TLDs up to an absorbed dose of about 20 Gy, and have studied the effect of accumulated dose on the sensitivity. We report results of measurements of absorbed dose due to ⁶⁰Co γ-rays covering almost six decades (30 µGy to 24 Gy) using LiF. Typically, the standard uncertainty on the mean of a set of five measurements is less than 0.5%. Finally, we give some preliminary results obtained using CaF₂:Mn TLDs |
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| Publication date | 1993-03 |
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| Publisher | National Research Council Canada |
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| Series | |
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| Language | English |
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| Peer reviewed | No |
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| NRC number | NRC-INMS-2215 |
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| NPARC number | 8899409 |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | 6007fb16-0768-49be-8def-63bc0296d1a8 |
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| Record created | 2009-04-22 |
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| Record modified | 2025-12-17 |
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