Alpha Particle Slowing-Down Characteristics and the Effect on MHD Instability Excitation at High-Density Operation Points in FFHRs
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概要
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Alpha-particle slowing-down behaviors at low-temperature, high-density operation points in force-free helical reactors (FFHRs) are examined on the basis of a Fokker-Planck (FP) simulation that simultaneously consider the balance among generation, slowing down, and loss from the plasma in parallel with the density dependence of the Alfvén speed. An accurate treatment of the boundary velocity region between thermal and non-thermal components is shown to be important in evaluating the alpha particle population that can induce instability. In a typical high-density, low-temperature operation point in an FFHR, this population is reduced.
- 社団法人 プラズマ・核融合学会の論文
著者
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SAGARA Akio
National Insitute for Fusion Science
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Nakao Yasuyuki
Department Of Applied Quantum Physics And Nuclear Engineering Kyushu University
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Matsuura Hideaki
Department Of Applied Quantum Physics And Nuclear Engineering Kyushu University
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MITARAI Osamu
Liberal Arts Education Center, Kumamoto Campus, Tokai University, 9-1-1 Toroku, Kumamoto 862-8652, Japan
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SAGARA Akio
National Institute for Fusion Science, 322-6 Oroshi-cho, Toki, 509-5292, Japan
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