General radiographic attributes of optically stimulated luminescence dosimeters: a basic insight
We report the ubiquitous radiographic characteristics of optically stimulated luminescence dosimeters (OSLD) so called nanoDot OSLDs (Landauer Inc., Glendwood, IL). The X-ray irradiations were performed in free air ambiance to inspect the repeatability, the reproducibility, the signal depletion, the...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2018
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| Online Access: | http://psasir.upm.edu.my/id/eprint/72825/1/General%20radiographic%20attributes.pdf |
| _version_ | 1796979526142525440 |
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| author | Musa, Yahaya Hashim, Suhairul Ghoshal, Sibkrishna K. Bradley, D. A. Ahmad, Nor Ezzaty Abdul Karim, Muhammad Khalis Hashim, Asmaliza |
| author_facet | Musa, Yahaya Hashim, Suhairul Ghoshal, Sibkrishna K. Bradley, D. A. Ahmad, Nor Ezzaty Abdul Karim, Muhammad Khalis Hashim, Asmaliza |
| author_sort | Musa, Yahaya |
| collection | UPM |
| description | We report the ubiquitous radiographic characteristics of optically stimulated luminescence dosimeters (OSLD) so called nanoDot OSLDs (Landauer Inc., Glendwood, IL). The X-ray irradiations were performed in free air ambiance to inspect the repeatability, the reproducibility, the signal depletion, the element correction factors (ECFs), the dose response and the energy dependence. Repeatability of multiple readouts after single irradiation to 10 mGy revealed a coefficient of variation below 3%, while the reproducibility in repeated irradiation-readout-annealing cycles was above 2%. The OSL signal depletion for three nanoDots with simultaneous irradiation to 20 mGy and sequential readouts of 25 times displayed a consistent signal reduction ≈0.5% per readout with R2 values over 0.98. ECFs for individual OSLDs were varied from 0.97 to 1.03. In the entire dose range under 80 kV, a good linearity with an R2 exceeding 0.99 was achieved. Besides, the percentage difference between OSLD and ion-chamber dose was less than 5%, which was superior to TLD. The X-ray photon irradiated energy response factors (between 0.76 and 1.12) in the range of 40–150 kV (26.1–61.2 keV) exhibited significant energy dependence. Indeed, the nanoDot OSLDs disclosed good repeatability, reproducibility and linearity. The OSLDs measured doses were closer to ion-chamber doses than that of TLD. It can be further improved up to ≈3% by applying the individual dosimeter ECF. On top, the energy dependent uncertainties can be minimized using the energy correction factors. It is established that the studied nanoDot OSLDs are prospective for measuring entrance dose in general radiographic practices. |
| first_indexed | 2024-03-06T10:10:12Z |
| format | Article |
| id | upm.eprints-72825 |
| institution | Universiti Putra Malaysia |
| language | English |
| last_indexed | 2024-03-06T10:10:12Z |
| publishDate | 2018 |
| publisher | Elsevier |
| record_format | dspace |
| spelling | upm.eprints-728252021-03-11T19:46:10Z http://psasir.upm.edu.my/id/eprint/72825/ General radiographic attributes of optically stimulated luminescence dosimeters: a basic insight Musa, Yahaya Hashim, Suhairul Ghoshal, Sibkrishna K. Bradley, D. A. Ahmad, Nor Ezzaty Abdul Karim, Muhammad Khalis Hashim, Asmaliza We report the ubiquitous radiographic characteristics of optically stimulated luminescence dosimeters (OSLD) so called nanoDot OSLDs (Landauer Inc., Glendwood, IL). The X-ray irradiations were performed in free air ambiance to inspect the repeatability, the reproducibility, the signal depletion, the element correction factors (ECFs), the dose response and the energy dependence. Repeatability of multiple readouts after single irradiation to 10 mGy revealed a coefficient of variation below 3%, while the reproducibility in repeated irradiation-readout-annealing cycles was above 2%. The OSL signal depletion for three nanoDots with simultaneous irradiation to 20 mGy and sequential readouts of 25 times displayed a consistent signal reduction ≈0.5% per readout with R2 values over 0.98. ECFs for individual OSLDs were varied from 0.97 to 1.03. In the entire dose range under 80 kV, a good linearity with an R2 exceeding 0.99 was achieved. Besides, the percentage difference between OSLD and ion-chamber dose was less than 5%, which was superior to TLD. The X-ray photon irradiated energy response factors (between 0.76 and 1.12) in the range of 40–150 kV (26.1–61.2 keV) exhibited significant energy dependence. Indeed, the nanoDot OSLDs disclosed good repeatability, reproducibility and linearity. The OSLDs measured doses were closer to ion-chamber doses than that of TLD. It can be further improved up to ≈3% by applying the individual dosimeter ECF. On top, the energy dependent uncertainties can be minimized using the energy correction factors. It is established that the studied nanoDot OSLDs are prospective for measuring entrance dose in general radiographic practices. Elsevier 2018 Article PeerReviewed text en http://psasir.upm.edu.my/id/eprint/72825/1/General%20radiographic%20attributes.pdf Musa, Yahaya and Hashim, Suhairul and Ghoshal, Sibkrishna K. and Bradley, D. A. and Ahmad, Nor Ezzaty and Abdul Karim, Muhammad Khalis and Hashim, Asmaliza (2018) General radiographic attributes of optically stimulated luminescence dosimeters: a basic insight. Radiation Physics and Chemistry, 147. pp. 1-6. ISSN 0969-806X https://www.sciencedirect.com/science/article/abs/pii/S0969806X17312628 10.1016/j.radphyschem.2018.01.022 |
| spellingShingle | Musa, Yahaya Hashim, Suhairul Ghoshal, Sibkrishna K. Bradley, D. A. Ahmad, Nor Ezzaty Abdul Karim, Muhammad Khalis Hashim, Asmaliza General radiographic attributes of optically stimulated luminescence dosimeters: a basic insight |
| title | General radiographic attributes of optically stimulated luminescence dosimeters: a basic insight |
| title_full | General radiographic attributes of optically stimulated luminescence dosimeters: a basic insight |
| title_fullStr | General radiographic attributes of optically stimulated luminescence dosimeters: a basic insight |
| title_full_unstemmed | General radiographic attributes of optically stimulated luminescence dosimeters: a basic insight |
| title_short | General radiographic attributes of optically stimulated luminescence dosimeters: a basic insight |
| title_sort | general radiographic attributes of optically stimulated luminescence dosimeters a basic insight |
| url | http://psasir.upm.edu.my/id/eprint/72825/1/General%20radiographic%20attributes.pdf |
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