Studies of radioluminescence in fused silica core fibers

K. Toh, T. Shikama, T. Kakuta, S. Nagata, B. Tsuchiya, C. Mori, J. Hori, T. Nishitani

Research output: Contribution to journalConference articlepeer-review

2 Citations (Scopus)

Abstract

Strong radioluminescence band and peaks were observed in fused silica core optical fibers under irradiation in fission reactors of Japan Materials Testing Reactor (JMTR) and in gamma-irradiation facility. A broad band in 400-1700 nm could be attributed to Cerenkov radiation, whose intensity was proportional to inverse of the third power of wavelength. The optical intensity of the peak at 450 nm, that was considered to be generated by oxygen vacancies, was proportional to the reactor power under the electronic excitation dose rate up to 5.0 × 103 Gy/s, and the dynamic range was at least more than five orders of magnitude. The peak intensity depends on details of silica microstructures and became twice after annealing at 773K. By using these radioluminescence peak and band, wide range dosimetry could be actualized in heavy radiation environments.

Original languageEnglish
Pages (from-to)215-220
Number of pages6
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume4786
DOIs
Publication statusPublished - 2002 Dec 1
EventPenetrating Radiation Systems and Applications IV - Seattle, WA, United States
Duration: 2002 Jul 92002 Jul 11

Keywords

  • Dosimetry
  • Gamma-ray
  • 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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