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Space and velocity distributions of fast ions in magnetically confined plasmas

Ya I Kolesnichenko, M Lisak, V V Lutsenko, F Wising1995年Plasma Physics and Controlled FusionIF 2.2出版社

General expressions in terms of the orbit-averaged distribution function are obtained for local characteristic quantities of fast ions, such as the velocity distribution, particle and energy density, and power deposition. The resulting expressions are applied to the case of a very peaked production profile of fast ions, characterized by particularly strong orbital effects. It is shown that in this case the radial profiles of the fast ions can be significantly different from the source profile, being, for example, strongly non-monotonic. The analysis is carried out for a straight as well as for a tokamak magnetic field. It is predicted that marginally co-passing and semi-trapped particles (i.e. particles that are trapped in only one azimuthal direction) can be transformed to trapped and circulating particles due to electron drag. Collisional constants of motion are obtained.

日本語訳

軌道平均分布関数を用いた一般式が、高速イオンの局所特性、例えば速度分布、粒子密度とエネルギー密度、およびパワー堆積に対して得られる。得られた式は、特に強い軌道効果によって特徴づけられる、高速イオンの非常にピーク状の生成分布の場合に適用される。この場合、高速イオンの径方向分布は、例えば強く非単調であるなど、ソース分布とは有意に異なり得ることが示される。解析は、直線磁場およびトカマク磁場に対して行われる。限界的な共通過粒子および半捕捉粒子(すなわち、一つの方位角方向のみに捕捉された粒子)は、電子抗力によって捕捉粒子および循環粒子に変換され得ることが予測される。衝突による運動の定数が得られる。

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Fusion Advanced Studies TorusEnergetic ion
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