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Neutron source based on the repetitive dense plasma focus model

H. Asai, I. Ueno1988年Fusion Engineering and DesignIF 1.7出版社

An intense neutron source of very large fluence 1020n/cm2 is required in material research for nuclear fusion reactors. The purpose of this paper is to discuss and present a scaling law of neutron yield from the repetitive dense plasma focus (RPF) powered by inductively stored energy from a slow capacitor bank as a large fluence neutron source.Section 2 presents the general discussion on the conditions of large fluence neutron source required for such applications. In section 3 a scaling law of neutron yield of the RPF powered by inductively stored energy is discussed by using a simple theoretical model.In section 4 experimental results of the RPF are shown and examined for a theoretical scaling law of neutron yield of the RPF and its numerical calculation.As a conclusion obtained by these experimental investigations, in section S it is examined that a new possibility for a intense neutron source would be opened by the RPF machine powered by inductively stored energy from a slow capacitor bank if we have N σ Im5.7 for larger current as the scaling law of neutron yield because repetition rate of neutron yield is specially improved by a factor I2.5 more than that in case of conventional operation.

日本語訳

核融合炉の材料研究には、非常に大きなフルエンス(1020 n/cm2)の強力な中性子源が必要とされる。本論文の目的は、誘導蓄積エネルギーを利用した反復型高密度プラズマフォーカス(RPF)による中性子収量のスケーリング則を提示し、議論することである。第2節では、そのような応用に必要とされる大フルエンス中性子源の一般的な条件について論じる。第3節では、単純な理論モデルを用いて、誘導蓄積エネルギーにより駆動されるRPFの中性子収量のスケーリング則を考察する。第4節では、RPFの実験結果を示し、中性子収量の理論スケーリング則とその数値計算との比較検討を行う。これらの実験的調査から得られた結論として、第5節では、より大きな電流に対して中性子収量がN σ Im5.7 に従って増大し、従来の運転方式と比較して中性子収量の繰り返し率がI2.5 の因子で大幅に向上することから、遅いキャパシタバンクからの誘導蓄積エネルギーを用いたRPF装置が、新しい強力な中性子源の可能性を切り開くことを示す。

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Plasma focusNeutron sourceDense plasma focus
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