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Stabilizing effect of a high-frequency magnetic field on the trapped-particle instability

D.W. Ross, O.P. Pogutse1971年被引用 1Nuclear FusionIF 3出版社

The stabilizing effect which an oscillating magnetic field of frequency Ω perpendicular to the main toroidal field has on the collisionless trapped-particle instability is studied for frequencies in the range ωbe < Ω < Ωi, where ωbe is the electron bounce frequency and Ωi is the ion cyclotron frequency. It is found that the fastest-growing modes are stabilized when ε3/8 k⊥ eB1/ΩB0 > 1, where k⊥ the wave number perpendicular to the main field , e is the electron thermal velocity, B1 is the amplitude of the oscillating field, and ε−1= R0/r, the aspect ratio. The extension of the calculation to other modes is discussed, and an additional example is given.

日本語訳

主トロイダル磁場に垂直な周波数Ωの振動磁場が、無衝突捕捉粒子不安定性に対して持つ安定化効果を、周波数範囲ωbe < Ω < Ωi(ここでωbeは電子バウンス周波数、Ωiはイオンサイクロトロン周波数)において研究する。最も速く成長するモードは、ε3/8 k⊥ eB1/ΩB0 > 1 のときに安定化されることが見出される。ここで k⊥ は主磁場に垂直な波数、e は電子熱速度、B1 は振動磁場の振幅、そして ε−1 = R0/r はアスペクト比である。他のモードへの計算の拡張について議論し、追加の例を与える。

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