Sensitization of natural rhyolite rock using high gamma doses for thermoluminescence dosimetry

The current study presents rhyolite as a novel and promising natural thermoluminescence emission (TL) material. The work focused on enhancing the TL sensitivity of rhyolite via optimization of the processing conditions: annealing and pre‐dose effect. The glow curves of irradiated rhyolite sample sho...

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Published in:Luminescence (Chichester, England) England), 2020-11, Vol.35 (7), p.1043-1047
Main Author: Aloraini, D. A.
Format: Article
Language:English
Subjects:
Air temperature
Dosimeters
Dosimetry
Emission analysis
Glow curves
Heating rate
Irradiation
natural rhyolite rock
Optimization
pre‐dose effect
Radiation
Radiation dosage
Rhyolite
Rhyolites
Room temperature
Sensitivity enhancement
sensitization
Thermoluminescence
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description The current study presents rhyolite as a novel and promising natural thermoluminescence emission (TL) material. The work focused on enhancing the TL sensitivity of rhyolite via optimization of the processing conditions: annealing and pre‐dose effect. The glow curves of irradiated rhyolite sample showed a single peak of about 110°C at 5°C sec–1 heating rate. Sensitization was performed following Fleming’s sensitization technique. It was found that applying 1 kGy pre‐dose irradiation, followed by thermal activation at 550°C for 1 h, and cooling in air at room temperature were the optimum conditions for TL sensitivity improvement of this 110°C glow peak. Both nonsensitized and sensitized rhyolite have linear behaviour in the range 5–1500 Gy. The obtained results present rhyolite as a material for potential dosimetry applications.
doi_str_mv 10.1002/bio.3815
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subjects Air temperature
Dosimeters
Dosimetry
Emission analysis
Glow curves
Heating rate
Irradiation
natural rhyolite rock
Optimization
pre‐dose effect
Radiation
Radiation dosage
Rhyolite
Rhyolites
Room temperature
Sensitivity enhancement
sensitization
Thermoluminescence
title Sensitization of natural rhyolite rock using high gamma doses for thermoluminescence dosimetry
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