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arXiv 2103.01762physics.plasm-ph
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空间和地面核动力装置中等离子体不稳定性的抑制

Suppression of plasma instabilities in space and ground nuclear power devices

A. S. Mustafaev, A. Yu. Grabovskiy, B. D. Klimenkov

摘要:

对三电极稳流稳压器等离子体中电流和电压振荡的激发条件进行了实验研究。结果发现,在所考虑的制度,等离子体具有负电导率,这会导致振荡。提出了一种通过外电极调节慢电子浓度来控制等离子体微分电导率符号的高效抑制等离子体不稳定性的方法。所提出的方法使得可以在高达5A/cm 2的放电电流密度和500 W/cm 2的功率下实现稳定剂的能量特性的高水平稳定性。

英文摘要:

The conditions for the excitation of current and voltage oscillations in the plasma of a three-electrode current and voltage stabilizer are experimentally investigated. It was found that in the regimes under consideration, the plasma has negative conductivity, which causes oscillations. A highly efficient method for suppressing plasma instabilities is proposed, based on controlling the sign of differential plasma conductivity by adjusting the concentration of slow electrons using an external electrode. The proposed method makes it possible to achieve a high level of stability of the energy characteristics of the stabilizer at a discharge current density of up to 5 A/cm2 and a power of 500 W/cm2.

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