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Negative energy vortices in inhomogeneous plasma

T D Kaladze, V A Marchenko, O A Pokhotelov, V I Petviashvili1987年Plasma Physics and Controlled FusionIF 2.2出版社

A new type of Alfven vortices which can exist in a plasma of very low pressure beta identical to pi p/B02<me/mi as well as with beta >me/mi is found. The reduced equations of drift-Alfven waves (DAW) are obtained. The vortices being solutions of the DAW equations have the analogous structure in both cases. With the help of the solutions the estimation on the main vortex parameters phi approximately A approximately ur0 is done which gives the values of a characteristic rotational velocity and a perturbation of the magnetic field in the vortex. Energy of the vortex tubes per length unit is calculated and it is shown that in both cases the vortex energy is negative. This means that in dissipative media the vortex energy is growing in absolute value (their size as well as the rotational velocity becomes higher).

日本語訳

新类型Alfvén涡旋被发现,其可存在于压力β极低(β=πp/B₀²<mₑ/mᵢ)以及β>mₑ/mᵢ的等离子体中。漂移Alfvén波(DAW)的约化方程被导出。涡旋作为DAW方程的解,在两种情况下具有类似的结构。借助这些解,对主要涡旋参数φ≈A≈ur₀进行了估算,得到了涡旋中特征旋转速度和磁场扰动的数值。单位长度涡旋管的能量被计算,结果表明在两种情况下涡旋能量均为负值。这意味着在耗散介质中,涡旋能量的绝对值增大(其尺寸以及旋转速度均增大)。

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