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Coupling of lower hybrid waves through a discontinuous edge layer of tokamak plasmas

F. Romanelli, F. Santini1984年被引用 1Nuclear FusionIF 3出版社

Realistic density profiles in the very periphery of tokamak discharges have been considered in the study of lower hybrid wave coupling by a waveguide array (grill). The density profile is assumed to be exponential in the scrape-off region up to the limiter radius and then linear. The effect of a sharp density gradient or of a density discontinuity at the limiter radius is discussed. It is shown that these effects lead to a strong modification of the transmission coefficient which can be optimized by adjusting the grill mouth position.

日本語訳

トカマク放電の最外周部における現実的な密度分布が、導波管アレイ(グリル)による低混成波結合の研究において考慮されてきた。密度分布は、スクレイプオフ領域ではリミター半径まで指数関数的であり、その後は線形であると仮定されている。リミター半径における急峻な密度勾配または密度不連続の影響について議論する。これらの効果が透過係数の大きな変化をもたらし、その変化はグリル口の位置を調整することによって最適化できることが示される。

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