Development of novel radiation remote-sensing method based on laser spectroscopic measurement of radiation induced radicals

Hideki Tomita, Kenichi Watanabe, Jun Kawarabayashi, Tetsuo Iguchi

Research output: Contribution to journalConference articlepeer-review

3 Citations (Scopus)

Abstract

For monitoring of intense radiation fields, such as around nuclear reactors, high energy accelerators, it is requested to develop a reliable radiation sensing method with high radiation resistance. As one of the promising methods, we propose a novel radiation remote-sensing method based on high sensitive cavity ring-down (CRD) laser spectroscopic measurement of radiation induced radicals. To verify the detection principle, we have made basic experiments on the CRD spectroscopic measurement of the radiation induced ozone concentration in the air irradiated by 60Co gamma-rays, while we have also developed the calculation model to estimate the yields of radiation induced radicals by solving simultaneous rate equations numerically. Through comparison between the experiments and the calculations, we have confirmed the detection principle and the validity of the calculation model, where the results show that the detectable range for the absorbed dose rate is from 4.8×10-2 to 3.2 Gy/s with time resolution of 35 sec by controlling the flow rate of the irradiated air.

Original languageEnglish
Pages (from-to)281-288
Number of pages8
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume5198
DOIs
Publication statusPublished - 2004
Externally publishedYes
EventHard X-Ray and Gamma-Ray Detector Physics V - San Diego, CA, United States
Duration: Aug 4 2003Aug 5 2003

All Science Journal Classification (ASJC) codes

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

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