NaCl pellets for prospective dosimetry using optically stimulated luminescence: Signal integrity and long-term versus short-term exposure
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TLDR
The results of this study show that the use of NaCl pellets for prospective dosimetry is a promising, cost-effective, and accessible complement to commercially available alternatives for accurate absorbed dose determinations.Abstract:
Optically stimulated luminescence (OSL) signal properties of pellets from three types of NaCl (two household salts and one analytical grade salt) were investigated for their use in prospective dosimetry. Special attention was given to the OSL signal behaviour with time. The readout protocol was optimised in terms of preheat temperature, and the OSL signal yield of the NaCl pellet with time as well as the fading of the OSL signal with time was investigated. The effects of acute and chronic irradiations were compared. Irradiations and readout were performed using a Riso TL/OSL reader (TL/OSL-DA-15, DTU Nutech, Denmark). The optimal preheat temperature was determined to be 100 oC, yielding OSL signals similar to a 1 h pause before OSL signal readout. There was no OSL signal fading observed as a function of time, but a decrease in the OSL signal yield of the NaCl pellets with time resulted in an apparent inverse fading when converting the OSL signal to an absorbed dose. For chronic radiation exposures of up to five weeks, the sensitivity of the NaCl pellets was found to be stable. The results of this study show that the use of NaCl pellets for prospective dosimetry is a promising, cost-effective, and accessible complement to commercially available alternatives for accurate absorbed dose determinations.read more
Citations
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Journal ArticleDOI
The 2019-2020 EURADOS WG10 and RENEB Field Test of Retrospective Dosimetry Methods in a Small-Scale Incident Involving Ionizing Radiation.
Lovisa Waldner,Christian Bernhardsson,Clemens Woda,F. Trompier,O. van Hoey,Ulrike Kulka,Ursula Oestreicher,C. Bassinet,Christopher Rääf,Michael Discher,David Endesfelder,Jonathan Eakins,E. Gregoire,Andrzej Wojcik,Y. Ristic,H. Kim,Jungil Lee,H. Yu,M. C. Kim,Michael Abend,Elizabeth A. Ainsbury +20 more
TL;DR: In 2019, a field test with the purpose of evaluating retrospective dosimetry methods as carried out in potential real-life exposure scenarios was organized by the EURADOS Working Group 10 and RENEB as discussed by the authors, where a 1.36 TBq 192Ir source was used to irradiate anthropomorphic phantoms in different geometries at doses of several Gy.
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Thermoluminescence study of pellets prepared using NaCl from Khewra Salt Mines in Pakistan
Khalil Ahmad,M. Basim Kakakhel,Sikander Hayat,M. Wazir-ud-Din,M. Masood Mahmood,Shakeel ur Rehman,M. Tariq Siddique,Sikander M. Mirza +7 more
TL;DR: In this paper, the thermoluminescence characteristics of naturally occurring salt (NaCl) were assessed for the development of a radiation dosimeter, and the results showed that the TL response became supra-linear for the dose ranges of 100-1000mGy and 1000-5000mGy.
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Experimentally determined and Monte Carlo–calculated energy dependence of NaCl pellets read by optically stimulated luminescence for photon beams in the energy range 30 keV to 1.25 MeV
TL;DR: The results presented here may serve as an important basis for further experimental and theoretical modelling of a build-up layer and filters in efforts to develop a passive personal dosemeter based on NaCl.
NaCl pellets for improved dosimetry
TL;DR: It is shown that stable NaCl pellets can easily be produced and they have dosimetric properties which are suitable for dosimetry and could be used as simple and accessible dosimeters in both hospitals, the nuclear industry and for individual dose assessments.
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Dosimetric properties of thermoluminescent NaCl pellets from Khewra Salt Mines, Pakistan
TL;DR: In this paper , thermal luminance and extended dosimetric characteristics of naturally occurring NaCl salt were studied and a linear and supra-linear TL response was observed between 1 m Gy-100 mGy and 100 mGy-10 Gy dose ranges respectively.
References
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TL;DR: The use of thermoluminescence as a method for the dosimetry of ionising radiation has been established for many decades and has been unquestionably successful, it is difficult to imagine how any new technique could easily supplant it.
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TL;DR: In this paper, the optically stimulated luminescence (OSL) signal (UV emission) of NaCl (420-560 nm stimulation) was used for dating natural salt deposits, as found in various arid environments.
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TL;DR: The aim of this work was to investigate the potential of a selection of household salts (NaCl) as a retrospective dosemeter for ionising radiation using optically stimulated luminescence (OSL) to suggest that household salt should seriously be considered as an emergency dosemeter.
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The interpretation of quartz optically stimulated luminescence equivalent dose versus time plots
TL;DR: Bailey et al. as discussed by the authors showed that the form of the quartz OSL shine plateau is influenced by the effects of phototransferred TL in the ∼110°C region.