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Tc-99の中性子捕獲断面積測定

Measurement of neutron capture cross sections of Tc-99

井頭 政之*

not registered

高速炉を用いた長寿命核分裂生成物(LLFP)消滅処理研究のためには、消滅性能等の炉心特性を詳細に検討する必要があり、従って、LLFPの精度良い中性子核反応断面積データが必要となる。そこで本研究では、重要なLLFPであるTc-99についてkeV中性子捕獲反応断面積の精度良い測定を行うため、測定に用いるTc-99試料の検討・調査及び我々の実験装置を用いた測定の詳細検討を行った。

For studies on incineration of long-lived fission products (LLFPs) in a fast reactor, detailed characteristics of reactor core such as incineration performance have to be investigated. Therefore, accurate neutron cross section data of LLFPs become necessary. In the present study, in order to perform the precise measurements of keV-neutron capture cross sections of Tc-99, which is one of most important LLFPs, the details of the Tc-99 sample and the measurements with our experimental facilities were investigated.

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