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Energy spectrum of α-particles escaping from a plasma as a result of turbulent diffusion

V.S. Belikov, Ya.I. Kolesnichenko, V.A. Yavorskij1976年被引用 11Nuclear FusionIF 3出版社

On the assumption that the main reason for the escape of α-particles from plasma is turbulent diffusion, the authors find the fraction of thermonuclear reaction energy transmitted to the plasma, the flux of α-particles escaping from the plasma and the energy distribution of the particles. The energy distribution depends to a great extent on whether quasi-linear relaxation of the α-particle distribution function is appreciable or not. The case of negligibly small quasi-linear distortion of the α-particle distribution is examined, as well as the case where quasi-linear effects are dominant. It is shown that the energy spectrum of the α-particles leaving the plasma as a result of turbulent diffusion contains both slowed-down and accelerated ( > 3.5 MeV) particles.

日本語訳

プラズマからのα粒子の漏出の主な原因が乱流拡散であるという仮定に基づき、著者らは、熱核反応エネルギーがプラズマに伝達される割合、プラズマから漏出するα粒子のフラックス、およびこれらの粒子のエネルギー分布を求める。エネルギー分布は、α粒子分布関数の準線形緩和が顕著であるか否かに大きく依存する。準線形歪みが無視できるほど小さい場合と、準線形効果が支配的である場合の両方が検討される。乱流拡散の結果としてプラズマから漏出するα粒子のエネルギースペクトルには、減速された粒子と加速された粒子(> 3.5 MeV)の両方が含まれることが示される。

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