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Neutron multiplication in lead: A comparative study based on a new calculational procedure and new nuclear data

U. Fischer, A. Schwenk-Ferrero, E. Wiegner1989年Fusion Engineering and DesignIF 1.7出版社

AbstractThe 14 MeV neutron multiplication in lead is analyzed on the basis of a new calculational procedure using recent double-differential neutron emission data from the EFF-1 data file. A comparison with conventional calculational procedures and currently available data evaluations is performed. No difference in the calculated total neutron multiplication can be observed. From the comparison to experimental lead sphere benchmarks, it is concluded that the 14 MeV (n, 2n)-cross section of lead should be increased to 2.2–2.3 b.

日本語訳

鉛中の14MeV中性子増倍を、EFF-1データファイルからの最近の二重微分中性子放出データを用いた新しい計算手順に基づいて解析する。従来の計算手順および現在利用可能なデータ評価との比較を行う。計算された全中性子増倍には差異は観測されない。実験的な鉛球ベンチマークとの比較から、鉛の14MeV(n,2n)断面積は2.2~2.3bに増加されるべきであると結論づけられる。

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