Evaluation of Effective Sources in Uncertainty Measurements of Personal Dosimetry by a Harshaw TLD System
Background: The accurate results of the individual doses in personal dosimety which are reported by the service providers in personal dosimetry are very important. There are national / international criteria for acceptable dosimetry system performance. Objective: In this research, the sources of...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Shiraz University of Medical Sciences
2014-06-01
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| Series: | Journal of Biomedical Physics and Engineering |
| Subjects: | |
| Online Access: | http://www.jbpe.org/Journal_OJS/JBPE/index.php/jbpe/article/view/293 |
| _version_ | 1818957536802373632 |
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| author | Hosseini Pooya SM Orouji T |
| author_facet | Hosseini Pooya SM Orouji T |
| author_sort | Hosseini Pooya SM |
| collection | DOAJ |
| description | Background: The accurate results of the individual doses in personal dosimety
which are reported by the service providers in personal dosimetry are very important.
There are national / international criteria for acceptable dosimetry system performance.
Objective: In this research, the sources of uncertainties are identified, measured
and calculated in a personal dosimetry system by TLD.
Method: These sources are included; inhomogeneity of TLDs sensitivity, variability
of TLD readings due to limited sensitivity and background, energy dependence,
directional dependence, non-linearity of the response, fading, dependent on ambient
temperature / humidity and calibration errors, which may affect on the dose responses.
Some parameters which influence on the above sources of uncertainty are studied for
Harshaw TLD-100 cards dosimeters as well as the hot gas Harshaw 6600 TLD reader
system.
Results: The individual uncertainties of each sources was measured less than 6.7%
in 68% confidence level. The total uncertainty was calculated 17.5% with 95% confidence
level.
Conclusion: The TLD-100 personal dosimeters as well as the Harshaw TLD-100
reader 6600 system show the total uncertainty value which is less than that of admissible
value of 42% for personal dosimetry services. |
| first_indexed | 2024-12-20T11:11:25Z |
| format | Article |
| id | doaj.art-b2b43bab094a493692f4809229e64b8b |
| institution | Directory Open Access Journal |
| issn | 2251-7200 2251-7200 |
| language | English |
| last_indexed | 2024-12-20T11:11:25Z |
| publishDate | 2014-06-01 |
| publisher | Shiraz University of Medical Sciences |
| record_format | Article |
| series | Journal of Biomedical Physics and Engineering |
| spelling | doaj.art-b2b43bab094a493692f4809229e64b8b2022-12-21T19:42:45ZengShiraz University of Medical SciencesJournal of Biomedical Physics and Engineering2251-72002251-72002014-06-01424348Evaluation of Effective Sources in Uncertainty Measurements of Personal Dosimetry by a Harshaw TLD SystemHosseini Pooya SM0 Orouji T1Iran Nuclear Regulatory Authority, Tehran, Iran | Radiation Application Research School, Nuclear Science and Technology Research Institute, Tehran, Iran Iran Nuclear Regulatory Authority, Tehran, IranBackground: The accurate results of the individual doses in personal dosimety which are reported by the service providers in personal dosimetry are very important. There are national / international criteria for acceptable dosimetry system performance. Objective: In this research, the sources of uncertainties are identified, measured and calculated in a personal dosimetry system by TLD. Method: These sources are included; inhomogeneity of TLDs sensitivity, variability of TLD readings due to limited sensitivity and background, energy dependence, directional dependence, non-linearity of the response, fading, dependent on ambient temperature / humidity and calibration errors, which may affect on the dose responses. Some parameters which influence on the above sources of uncertainty are studied for Harshaw TLD-100 cards dosimeters as well as the hot gas Harshaw 6600 TLD reader system. Results: The individual uncertainties of each sources was measured less than 6.7% in 68% confidence level. The total uncertainty was calculated 17.5% with 95% confidence level. Conclusion: The TLD-100 personal dosimeters as well as the Harshaw TLD-100 reader 6600 system show the total uncertainty value which is less than that of admissible value of 42% for personal dosimetry services.http://www.jbpe.org/Journal_OJS/JBPE/index.php/jbpe/article/view/293TLDUncertaintyPersonal DosimetryTLD ReaderDose |
| spellingShingle | Hosseini Pooya SM Orouji T Evaluation of Effective Sources in Uncertainty Measurements of Personal Dosimetry by a Harshaw TLD System Journal of Biomedical Physics and Engineering TLD Uncertainty Personal Dosimetry TLD Reader Dose |
| title | Evaluation of Effective Sources in Uncertainty Measurements of Personal Dosimetry by a Harshaw TLD System |
| title_full | Evaluation of Effective Sources in Uncertainty Measurements of Personal Dosimetry by a Harshaw TLD System |
| title_fullStr | Evaluation of Effective Sources in Uncertainty Measurements of Personal Dosimetry by a Harshaw TLD System |
| title_full_unstemmed | Evaluation of Effective Sources in Uncertainty Measurements of Personal Dosimetry by a Harshaw TLD System |
| title_short | Evaluation of Effective Sources in Uncertainty Measurements of Personal Dosimetry by a Harshaw TLD System |
| title_sort | evaluation of effective sources in uncertainty measurements of personal dosimetry by a harshaw tld system |
| topic | TLD Uncertainty Personal Dosimetry TLD Reader Dose |
| url | http://www.jbpe.org/Journal_OJS/JBPE/index.php/jbpe/article/view/293 |
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