The deceleration of a low-density beam of ions in plasma with developed ion-acoustic turbulence arising in strong electric field is described. The time and length of beam deceleration along and across the anisotropy axis of the wave number distribution of ion-acoustic waves are found. It is shown to what extent an increase in the strength of the electric field that generates turbulence is accompanied by a decrease in the time and length of braking. As the beam propagates along the anisotropy axis, its velocity decreases to approximately the velocity of ion sound, and the direction of propagation does not change. When the beam is decelerated with an initial velocity across the anisotropy axis, a velocity component appears along the anisotropy axis during deceleration, which results in the beam deflection from the initial direction. In this case, the modulus of the beam velocity at the end of deceleration is close to the ion sound velocity.

中文翻译：

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由于切伦科夫与离子声波相互作用导致快离子稀薄束减速

描述了等离子体中低密度离子束的减速，以及强电场中产生的离子声湍流。找到了沿着离子声波的波数分布的各向异性轴和穿过各向异性轴的束流减速的时间和长度。它显示了产生湍流的电场强度的增加在多大程度上伴随着制动时间和长度的减少。当束流沿各向异性轴传播时，其速度减小至大约离子声速，并且传播方向不改变。当梁以穿过各向异性轴的初始速度减速时，在减速期间沿各向异性轴出现速度分量，这导致梁从初始方向偏转。在这种情况下，减速结束时的束流速度的模数接近离子声速。