Optical dosimetry for ionizing radiation fields by infrared radioluminescence

T. Shikama, K. Toh, Shinji Nagata, B. Tsuchiya

Research output: Contribution to journalConference articlepeer-review

3 Citations (Scopus)


Dosimetry of ionizing radiation fields is playing a more and more essential role for safety and effective operation of nuclear systems. An optical dosimetry system composed of radiation resistant optical fibers and radioluminescence materials has several advantages over a conventional electric dosimetry system. Especially, in a nuclear fusion system, a real time diagnostics of intensity of radiation fields with a high time resolution is indispensable, where electromagnetic noises are surmount and it is hard to find engineering solutions to satisfy severe demands from plasma physics and engineering with conventional electric dosimetry system. Erbium oxide (Er 2O3) is found to emit radioluminescence in an infrared region where radiation induced degradation of optical transmissivity of fused silica (SiO2) core optical fiber is marginal. Also, an intensity of the radioluminescence of erbium oxide in an infrared region is found not to decrease with increase of the dose of ionizing irradiation. The optical dosimetry system with erbium oxide is applicable to dosimetry of intense ionizing radiation fields.

Original languageEnglish
Article number123
Pages (from-to)507-510
Number of pages4
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume5855 PART I
Publication statusPublished - 2005 Dec 14
Event17th International Conference on Optical Fibre Sensors, OFS-17 - Bruges, Belgium
Duration: 2005 May 232005 May 27


  • Erbium oxide (ero)
  • Optical dosimetry system for ionizing radiation fields
  • Optical fiber
  • Radioluminescence

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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