Investigation of some commercial TLD chips/discs as UV dosimeters
Using a deuterium UV source, we have investigated the response of a number of commercially available thermoluminescence (TL) dosimeters (TLDs) to UV radiation (UVR), including LiF : Mg, Cu, P (TLD-100 H), CaF2 : Dy (TLD-200), CaF2 : Mn (TLD-400), Al2O3 (TLD-500), 7LiF : Mg, Cu, P (TLD-700 H) and CaS...
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| Format: | Article |
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Elsevier
2001
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| _version_ | 1796946356275773440 |
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| author | Noh, A.M. Amin, Y.M. Mahat, R.H. Bradley, D.A. |
| author_facet | Noh, A.M. Amin, Y.M. Mahat, R.H. Bradley, D.A. |
| author_sort | Noh, A.M. |
| collection | UM |
| description | Using a deuterium UV source, we have investigated the response of a number of commercially available thermoluminescence (TL) dosimeters (TLDs) to UV radiation (UVR), including LiF : Mg, Cu, P (TLD-100 H), CaF2 : Dy (TLD-200), CaF2 : Mn (TLD-400), Al2O3 (TLD-500), 7LiF : Mg, Cu, P (TLD-700 H) and CaSO4 : Dy (TLD-900). The intrinsic method was used to detect UVR, while trap depth and frequency factors were estimated using the initial rise method. We have studied TL intensity as a function of exposure time, observing high sensitivity of TLD-500 to UVR. Conversely, TLD-400 displays weak sensitivity to these same radiations. Although TLD-900 and TLD-200 are both less sensitive to UVR than TLD-500, they each provide a linear response to UVR. The possible use of these phosphors as UV dosimeters has been further appraised, examining thermal fading effects and fading due to light exposure. |
| first_indexed | 2024-03-06T05:30:28Z |
| format | Article |
| id | um.eprints-12145 |
| institution | Universiti Malaya |
| last_indexed | 2024-03-06T05:30:28Z |
| publishDate | 2001 |
| publisher | Elsevier |
| record_format | dspace |
| spelling | um.eprints-121452015-01-16T01:42:58Z http://eprints.um.edu.my/12145/ Investigation of some commercial TLD chips/discs as UV dosimeters Noh, A.M. Amin, Y.M. Mahat, R.H. Bradley, D.A. Q Science (General) QC Physics Using a deuterium UV source, we have investigated the response of a number of commercially available thermoluminescence (TL) dosimeters (TLDs) to UV radiation (UVR), including LiF : Mg, Cu, P (TLD-100 H), CaF2 : Dy (TLD-200), CaF2 : Mn (TLD-400), Al2O3 (TLD-500), 7LiF : Mg, Cu, P (TLD-700 H) and CaSO4 : Dy (TLD-900). The intrinsic method was used to detect UVR, while trap depth and frequency factors were estimated using the initial rise method. We have studied TL intensity as a function of exposure time, observing high sensitivity of TLD-500 to UVR. Conversely, TLD-400 displays weak sensitivity to these same radiations. Although TLD-900 and TLD-200 are both less sensitive to UVR than TLD-500, they each provide a linear response to UVR. The possible use of these phosphors as UV dosimeters has been further appraised, examining thermal fading effects and fading due to light exposure. Elsevier 2001-06 Article PeerReviewed Noh, A.M. and Amin, Y.M. and Mahat, R.H. and Bradley, D.A. (2001) Investigation of some commercial TLD chips/discs as UV dosimeters. Radiation Physics and Chemistry, 61 (3-6). pp. 497-499. ISSN 0969-806X, DOI https://doi.org/10.1016/S0969-806X(01)00313-9 <https://doi.org/10.1016/S0969-806X(01)00313-9>. http://www.sciencedirect.com/science/article/pii/S0969806X01003139 http://dx.doi.org/10.1016/S0969-806X(01)00313-9 |
| spellingShingle | Q Science (General) QC Physics Noh, A.M. Amin, Y.M. Mahat, R.H. Bradley, D.A. Investigation of some commercial TLD chips/discs as UV dosimeters |
| title | Investigation of some commercial TLD chips/discs as UV dosimeters |
| title_full | Investigation of some commercial TLD chips/discs as UV dosimeters |
| title_fullStr | Investigation of some commercial TLD chips/discs as UV dosimeters |
| title_full_unstemmed | Investigation of some commercial TLD chips/discs as UV dosimeters |
| title_short | Investigation of some commercial TLD chips/discs as UV dosimeters |
| title_sort | investigation of some commercial tld chips discs as uv dosimeters |
| topic | Q Science (General) QC Physics |
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