Resonance Interaction Effect between Hot Sample and Cold Core in Analysis of Doppler Effect Measurement.

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概要

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• The resonance interaction effect between hot sample and adjacent cold core was evaluated in a small sample <SUP>238</SUP>U Doppler effect measuremnt. For this analysis a collision probability code-with an ultra-fine group structure PEACO-X was developed. The previously measuredDoppler effect reactivity confficients at FCA are systematically analyzed by using the PEACO-Xcode. The results were compared with the conventional calculation results using the SLAROM code. From these results, it was shown that this effect depens on the background cross section for <SUP>238</SUP>U in a core, and also depends on the radius and density of the sample. When this resonance interaction effect is taken into account, the calculated Doppler reactivity woths becomes larger than those using the conventional method and the sample dependency of calculation disappeared. The reliability of Doppler effect calculation was significantly improved.

• 一般社団法人 日本原子力学会の論文

著者

• Mukaiyama Takehiko

  Tokai Research Establishment Japan Atomic Energy Research Institute

• OKAJIMA Shigeaki

  Tokai Research Establishment, Japan Atomic Energy Research Instisute

• MUKAIYAMA Takehiko

  Tokai Research Establishment, Japan Atomic Energy Research Instisute

• OIGAWA Hiroyuki

  Tokai Research Establishment, Japan Atomic Energy Research Instisute

関連論文

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• High Temperature Doppler Effect Experiment for ^U at FCA, (I) Reactivity Worth Measurement with a Small Heated Sample up to 1, 500℃
• Lead-Bismuth Eutectic Compatibility with Materials in the Concept of Spoliation Target for ADS(International Conferences on Power and Energy System)
• Resonance Interaction Effect between Hot Sample and Cold Core in Analysis of Doppler Effect Measurement.

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