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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my.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 http://www.sciencedirect.com/science/article/pii/S0969806X01003139 http://dx.doi.org/10.1016/S0969-806X(01)00313-9 |
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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. |
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Article |
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Noh, A.M. Amin, Y.M. Mahat, R.H. Bradley, D.A. |
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Noh, A.M. Amin, Y.M. Mahat, R.H. Bradley, D.A. |
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Noh, A.M. |
title |
Investigation of some commercial TLD chips/discs as UV dosimeters |
title_short |
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_sort |
investigation of some commercial tld chips/discs as uv dosimeters |
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Elsevier |
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2001 |
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http://eprints.um.edu.my/12145/ http://www.sciencedirect.com/science/article/pii/S0969806X01003139 http://dx.doi.org/10.1016/S0969-806X(01)00313-9 |
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