Comparison of Gamma-Radiation Induced Attenuation in Al-Doped, P-Doped and Ge-Doped Fibres for Dosimetry

Author

Faustov, A.V. ; Gusarov, A. ; Wuilpart, M. ; Fotiadi, Andrei A. ; Liokumovich, Leonid ; Zolotovskiy, I.O. ; Tomashuk, Alexander ; de Schoutheete, T. ; Megret, P.

Author_Institution

SCK.CEN Belgian Nucl. Res. Center, Mol, Belgium

Volume

60

Issue

4

fYear

2013

fDate

Aug. 2013

Firstpage

2511

Lastpage

2517

Abstract

We have investigated radiation induced absorption in Al-doped, P-doped and Ge-doped optical fibres under ⁶⁰Co source gamma-radiation up to a total dose of 71 kGy at two temperatures 30 and 80 ^°C. The Al-doped and P-doped fibres demonstrated high radiation sensitivity required for the optical fibre dosimetry. The RIA response to temperature increase from 30 to 80 ^°C depended on the dopant. In Al-doped fibres the absorption level decreased by 25% whereas in P-doped fibres it increased by at least 10%. For comparison we also tested standard telecom-grade Ge-doped fibres. Such fibres demonstrated a monotonous rise of the RIA during the whole irradiation with a small decrease of sensitivity at the higher temperature.

Keywords

dosimetry; gamma-rays; optical fibres; RIA response; absorption level; gamma radiation induced attenuation; high radiation sensitivity; optical fibre dosimetry; radiation induced absorption; source gamma radiation; Optical attenuators; Optical fibers; Optical sensors; Radiation effects; Sensitivity; Temperature measurement; Temperature sensors; Al-doped fibres; P-doped fibres; fibre optic dosimetry; highly radiation sensitive fibres;

fLanguage

English

Journal_Title

Nuclear Science, IEEE Transactions on

Publisher

ieee

ISSN

0018-9499

Type

jour

DOI

10.1109/TNS.2013.2273273

Filename

6576258