A distribution of the electric potentials around a charged absorbing particle in a drifting weakly ionised collisional plasma with negative ions is calculated in the linear hydrodynamic approach. Coulomb-like asymptote of the electric potential around the absorbing particle deforms under the action of the negative ions’ flow and exhibits a valley profile along the flow behind the particle. The presence of the flowing negative ions can be conducive to string formation in the dust structures at relatively large pressures.

中文翻译：

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离子漂移碰撞负电等离子体中带电吸收小粒子周围的各向异性电位

在线性流体动力学方法中计算了在带有负离子的漂移弱电离碰撞等离子体中带电吸收粒子周围的电势分布。吸收粒子周围电势的库仑式渐近线在负离子流的作用下变形，并沿粒子后面的流呈现谷轮廓。流动负离子的存在有助于在相对较大的压力下在尘埃结构中形成弦。