Thermoluminescence Properties of Optical Fibers Doped with RE⁺³ (RE=Sm, Nd) Ions Subjected to X-Ray Irradiation

Abstract:

This paper describes the thermoluminescence properties of RE⁺³(RE=Nd, Sm) doped optical fiber SiO₂ prepared by CorActive company in Canada. The samples were exposed to 6 MV X-ray irradiation at dose ranging from 0.5 to 4 Gy at hospital Sultan Ismail, Johor Bahru, Malaysia using the LINAC accelerator. After exposure and a certain delay of 12 h to get uniform control of thermal fading, the optical fiber TL yield was readout using a TL reader. The optical fiber demonstrated a linear TL response versus of the absorbed dose. The linearity increases with the increasing dose while in the case of Sm-doped optical fiber; the response is comparatively smaller than Nd-doped optical fiber. Also, the glow curve of RE⁺³ ions doped optical fiber is compared with the undoped fibers. The results exhibit that the glow curve peaks are shifted to higher temperature due to rare-earth doping. As the results indicate the TL response strongly depends on the doping type of materials. All these TL characteristics are proposing this commercial optical fiber very decisive TL material.

• Periodical: Applied Mechanics and Materials (Volume 606)
• Pages: 19-23
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.606.19
• Online since: August 2014
• Authors: Azadeh Refaei*, Husin Wagiran, M.A. Saeed
• Keywords: 6 Mv Photon X-Ray, Glow Curve, Thermoluminescence Properties, Tl Response

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