Gamma ray radiation induced absorption in Ti doped single mode optical fibres at low dose levels

Radiation response behavior of high phosphorous doped step-index multimode optical fibers under low dose gamma irradiation

“…The radiation induced loss [4][5][6][7][8][9] in optical fiber depends on many parameters such as the radiation source, dose rates, temperature, fiber material, fiber dimension, dopant concentration in the core and cladding etc. In the last decade, extreme research work has been carried out to study the radiation effect on optical fibers to use them as the information transmission system in which require radiation resistance [10][11][12] behavior and to explore their possibility for use as radiation sensor [13][14][15][16][17][18][19] under various radiation environments such as nuclear waste tanks, nuclear reactors, etc., in which require radiation softness behavior. The radiation effects on P-doped [17,20,21] silica bulk materials and fibers have been reported.…”

Influence of gamma-irradiation on the photocatalytic activity of Degussa P25 TiO2

“…However, some literature data show changes in the crystal cell parameters of YBCO at irradiation doses significantly [25]; resistor-type structures based on TiO 2 show an increase in the values of current by three orders of magnitude after irradiation with a dose of 7.524 mSv [26]; the crystallinity of TiO 2 is improved by irradiation with doses B10 kGy [27]; the optical absorption of Ti 3? -related color centers shows a variation with Ti content in SiO 2 host glass matrix at a total dose of 10-100 Gy [28].…”

“…. The observed slight changes in the cell parameters may be due to the formation [28] of distorted octahedral Ti 3? O 6 .…”

Influence of gamma-ray irradiation on Faraday effect of Cu-doped germano-silicate optical fiber

“…Efforts to take advantage of the radiationinduced change in optical properties have been made by adding special dopants in the core of optical fiber for different purposes. Addition of metal elements such as Pb, Al, Ti or P was found to induce great increase of radiation-induced attenuation (RIA) which is suitable for radiation dosimeter application [5][6][7]. Optical fibers doped with rare-earth elements such as Pr, Eu, and Ce showed radiation-induced luminescence at visible wavelength region, so that they are considered as a candidate of luminescent fiber dosimeter [7].…”