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Viscosity damping of convective cells in J.I.P.P.-stellarator-confined plasmas

M. Fujiwara, K. Miyamoto1972年被引用 8Nuclear FusionIF 3出版社

The observed distributions of density and floating potential confirm that convective loss plays an important role in plasma transport in the stellarator field. To suppress the convective motion, the effect of viscosity damping of the motion is utilized. As the kinetic viscosity perpendicular to the magnetic field is proportional to (ρi, mi and νii are ion Larmor radius, mass and collision frequency, respectively), heavy ion plasmas such as argon and xenon plasmas are used. The experimental results confirm the effect of the viscosity damping, and the observed diffusion coefficient of the xenon plasma is, within a factor of 2, the same as the neoclassical one in the plateau region.

日本語訳

観測された密度および浮遊電位の分布は、ステラレーター磁場中でのプラズマ輸送において対流損失が重要な役割を果たすことを確認している。対流運動を抑制するために、運動の粘性減衰の効果が利用される。磁場に垂直な動粘性率が(ρi、mi、νiiはそれぞれイオン・ラーマー半径、質量、衝突周波数)に比例するため、アルゴンやキセノンのような重イオンプラズマが用いられる。実験結果は粘性減衰の効果を確認し、観測されたキセノンプラズマの拡散係数は、プラトー領域における新古典論的な値と2倍の範囲内で一致する。

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