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Sufficient stability condition for alpha-driven velocity-space modes in compression-heated tokamaks

K. Yamazaki, M. Okamoto1983年Nuclear FusionIF 3出版社

Magnetic-compression heating may invert the velocity distribution of alpha particles and lead to the possibility of exciting velocity space instabilities. A sufficient stability condition is derived for these modes in compression-heated tokamaks. A high-field high-density compression scenario like Zephyr satisfies this stability condition, while a medium-field high-temperature compression scheme like TFTR or a rather fast and strong compression scheme like T-14 has some chance t o excite velocity-space thermonuclear instabilities.

日本語訳

磁気圧縮加熱はアルファ粒子の速度分布を反転させ、速度空間不安定性を励起する可能性をもたらすかもしれない。圧縮加熱トカマクにおけるこれらのモードに対する十分安定条件が導出される。Zephyrのような高磁場・高密度圧縮シナリオはこの安定条件を満たすが、TFTRのような中磁場・高温圧縮方式や、T-14のようなかなり高速かつ強力な圧縮方式は、速度空間熱核不安定性を励起する可能性がいくらかある。

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