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Measured, estimated and calculated (n,α) cross-sections for fusion applications

J. Csikai, V. Semkova, R. Dóczi, A.D. Majdeddin, A. Fenyvesi1997年Fusion Engineering and DesignIF 1.7出版社

AbstractActivation cross-sections have been measured and deduced for 59 (n,α) reactions in the 14 MeV range. The systematics in the σn,α data, especially the isotopic dependence could be improved. New estimated data are given for the production of long-lived isotopes and for the total σn,α values of some elements at (14.7 ± 0.2) MeV. Helium emission cross sections derived from the isotopic data for 26 elements agree well in most cases with the available direct measurements. Spectrum averaged (n,α) cross sections were measured for 9 reactions in Be(d,n) neutron field at Ed = 9.72 MeV. Results were compared with the ENDF-B/VI and IRDF 90 data files for testing for the validation of the differential data. The isometric cross section ratio has also been measured and deduced for some (n,α) reactions at 14.7 MeV.

日本語訳

(n,α)反応の59例について、14.7 MeV領域における放射化断面積を測定し、系統的に導出した。σn,αデータにおける系統性、特に同位体依存性は改善の余地があった。長寿命同位体の生成および一部元素の全σn,α値について、(14.7 ± 0.2) MeVにおける新たな推定値を提示した。26元素について同位体データから導出したヘリウム生成断面積は、利用可能な直接測定値と概ね良好な一致を示した。Be(d,n)中性子場(Ed = 9.72 MeV)において、9反応のスペクトル平均(n,α)断面積を測定した。結果は、微分データの検証を目的として、ENDF/B-VIおよびIRDF 90データファイルと比較した。さらに、14.7 MeVにおける一部の(n,α)反応について、異性体断面積比の測定および導出も行った。

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