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Calculated neutron emission spectrum with knock-on effects for RF heated (3He)D plasmas

M. Nocente, G. Gorini, J. Källne, M. Tardocchi2011年被引用 44Nuclear FusionIF 3出版社

The neutron emission from (3He)D plasmas with RF heating is calculated using a model that includes supra-thermal (knock-on) components of the deuteron population. The RF generation of fast 3He ions is described and the knock-on components were determined with the help of newly derived 3He + d scattering cross sections. Results are presented on the neutron emission spectrum and its contributions from different deuteron velocity components. It is shown that knock-on leaves an observable feature in the spectrum with a clear dependence on absorbed RF power. The importance of the nuclear interaction in the elastic cross section is demonstrated. The results represent a step forward in the use of neutron emission spectroscopy to diagnose fusion plasmas with minority supra-thermal components in their fuel ion composition.

日本語訳

(3He)DプラズマからのRF加熱による中性子放出は、重陽子集団の超熱的(ノックオン)成分を含むモデルを用いて計算される。高速3HeイオンのRF生成について説明し、ノックオン成分は新たに導出された3He + d散乱断面積を用いて決定された。異なる重陽子速度成分からの寄与とともに、中性子放出スペクトルに関する結果が提示される。ノックオンは、吸収されたRFパワーに明確に依存する観測可能な特徴をスペクトルに残すことが示される。弾性散乱断面積における核相互作用の重要性が実証される。これらの結果は、燃料イオン組成中に少数の超熱的成分を含む核融合プラズマの診断における中性子放出分光法の利用における前進を表す。

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Neutron emission
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