Effects of magnetic field on an optical fibre radiation dosimeter

Sinead O'Keeffe, Lingxia Chen, Elfed Lewis, Mark Grattan, Alan Hounsell, Glenn Whitten, Giuseppe Schettino

Research output: Chapter in Book/Report/Conference proceedingConference contribution


This paper presents the initial investigation into the effects of magnetic field on the luminescence response of a plastic optical fibre based dosimeter. The optical fibre sensor is based on radioluminescence, whereby a PMMA (polymethyl methacrylate) plastic optical fibre is coated with radiation sensitive inorganic scintillator, Terbium-doped Gadolinium Oxysulphide (Gd2O2S:Tb), that fluoresce when exposed to ionising radiation. The sensor has shown a non-linear decrease in optical intensity for increasing magnetic field. However this effect demonstrated good repeatability, allowing for the possibility of using correction factors in the employment of such sensors near known magnetic fields.

Original languageEnglish
Title of host publicationIEEE SENSORS 2016: Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
Number of pages3
ISBN (Electronic)9781479982875
ISBN (Print)978-1-4799-8288-2
Publication statusPublished - 09 Jan 2017
Externally publishedYes
Event15th IEEE Sensors Conference, SENSORS 2016 - Orlando, United States
Duration: 30 Oct 201602 Nov 2016


Conference15th IEEE Sensors Conference, SENSORS 2016
Country/TerritoryUnited States


  • magnetic field effects
  • optical fibre sensor
  • radiation dosimeter
  • radioluminescence
  • radiotherapy

ASJC Scopus subject areas

  • Electrical and Electronic Engineering


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