Feasibility study of large-scale production of iodine-125 at the high temperature engineering test reactor

Hai Quan Ho, Yuki Honda, Shimpei Hamamoto, Toshiaki Ishii, Nozomu Fujimoto, Etsuo Ishitsuka

Research output: Contribution to journalArticle

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Abstract

The feasibility of a large-scale iodine-125 production from natural xenon gas at high-temperature gas-cooled reactors (HTGRs) was investigated. A high-temperature engineering test reactor (HTTR), which is located in Japan at Oarai-machi Research and Development Center, was used as a reference HTGR reactor in this study. First, a computer code based on a Runge-Kutta method was developed to calculate the quantities of isotopes arising from the neutron irradiation of natural xenon gas target. This code was verified with a good agreement with a reference result. Next, optimization of irradiation planning was carried out. As results, with 4 days of irradiation and 8 days of decay, the 125 I production could be maximized and the 126 I contamination was within an acceptable level. The preliminary design of irradiation channels at the HTTR was also optimized. The case with 3 irradiation channels and 20-cm diameter was determined as the optimal design, which could produce approximately 1.8 × 10 5 GBq/y of 125 I production.

Original languageEnglish
Pages (from-to)209-214
Number of pages6
JournalApplied Radiation and Isotopes
Volume140
DOIs
Publication statusPublished - Oct 1 2018

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engineering test reactors
iodine 125
high temperature gas cooled reactors
irradiation
xenon
Runge-Kutta method
neutron irradiation
research and development
gases
planning
Japan
contamination
isotopes
reactors
computer programs
optimization
decay

All Science Journal Classification (ASJC) codes

  • Radiation

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Feasibility study of large-scale production of iodine-125 at the high temperature engineering test reactor. / Ho, Hai Quan; Honda, Yuki; Hamamoto, Shimpei; Ishii, Toshiaki; Fujimoto, Nozomu; Ishitsuka, Etsuo.

In: Applied Radiation and Isotopes, Vol. 140, 01.10.2018, p. 209-214.

Research output: Contribution to journalArticle

Ho, Hai Quan ; Honda, Yuki ; Hamamoto, Shimpei ; Ishii, Toshiaki ; Fujimoto, Nozomu ; Ishitsuka, Etsuo. / Feasibility study of large-scale production of iodine-125 at the high temperature engineering test reactor. In: Applied Radiation and Isotopes. 2018 ; Vol. 140. pp. 209-214.
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