Thermoluminescence characteristics of Nd-doped SiO2 optical fibers irradiated with the (60)Co gamma rays

Refaei A 1 , Wagiran H 1 , Saeed MA 1 , Hosssain I 2

Affiliations 

  • 1 Department of Physics, Faculty of Science, University Technology Malaysia, 81310 Skudai, Johor, Malaysia
  • 2 Department of Physics, Rabigh College of Science and Arts, King Abdulaziz University, Post Box 344, Rabigh 21911, Saudi Arabia
Appl Radiat Isot, 2014 Dec;94:89-92.
PMID: 25146569 DOI: 10.1016/j.apradiso.2014.07.012

Abstract

Thermoluminescence (TL) properties (radiation sensitivity, dose response, signal fading) of Nd-doped SiO2 optical fibers irradiated with 1.25MeV photons to 1-50Gy were studied. The peak of the glow curve is around 190°C regardless of the dose. The dose response is linear up to 50Gy. The radiation sensitivity is 219nCmg(-1)Gy(-1). The fiber can be a potential candidate for photon radiotherapy dosimetry due to its high radiation sensitivity, linear dose response in a wide range, slow fading, and high spatial resolution due to the small size of the fiber.

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