Optical dosimetry for ionizing radiation fields by infrared radioluminescence

T. Shikama; K. Toh; S. Nagata; B. Tsuchiya

doi:10.1117/12.624034

23 May 2005 Optical dosimetry for ionizing radiation fields by infrared radioluminescence

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

Proceedings Volume 5855, 17th International Conference on Optical Fibre Sensors; (2005) https://doi.org/10.1117/12.624034
Event: 17th International Conference on Optical Fibre Sensors, 2005, Bruges, Belgium

Abstract

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 (Er₂O₃) 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.

Citation Download Citation

T. Shikama, K. Toh, S. Nagata, and B. Tsuchiya "Optical dosimetry for ionizing radiation fields by infrared radioluminescence", Proc. SPIE 5855, 17th International Conference on Optical Fibre Sensors, (23 May 2005); https://doi.org/10.1117/12.624034

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