| CROSS-DISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY |
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Thermoluminescence Response of Germanium-Doped Optical Fibers to X-Ray Irradiation |
| M. A. Saeed1**, N. A. Fauzia1, I. Hossain2, A. T. Ramli1, B. A. Tahir1 |
1Department of Physics, Universiti Teknologi Malaysia, Skudai-81310, Johor, Malaysia
2Department of Physics, College of Sciences and Arts, King Abdulaziz University, Rabigh 21911, P.O. Box No. 344, KSA |
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M. A. Saeed, N. A. Fauzia, I. Hossain et al 2012 Chin. Phys. Lett. 29 078701 |
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Abstract We present the characteristics of the thermoluminescence (TL) response of Ge-doped optical fibers with various energies and exposures of photon irradiation. To investigate the Ge-doped SiO2 as an efficient TL material, the TL responses are compared with commercially available standard TLD100 media. The Ge-doped optical fiber and TLD100 are placed in gelatin capsules and irradiated with x-ray using a Toshiba model KXO-15R x-ray generator. The Ge-doped fiber and TLD-100 show linear response as a function of current and time using x-ray photon of energy 60, 80 and 100 kV. When irradiated with 60, 80 and 100 kV x-ray energy at various currents (mA), tube distance (cm) and exposure time (second) ranges, TLD100 media provide a TL yield up to two times that of Ge-doped fibers. The energy response of the Ge-doped fibers is linear and similar over the 60–100 kV energy range, and its sensitivity is 0.39±0.05 of the TLD100 media. The glow curves of TLD 100 and doped optical fiber are also compared.
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Received: 19 April 2012
Published: 29 July 2012
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