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首页> 外文会议>International Conference on Phenomena in Ionized Gases(ICPIG 2003) vol.1; 20030715-20; Greifswald(DE) >Debye molecule
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Debye molecule

机译：德拜分子

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摘要

Two charged dust particles inside a cloud of charges are considered as Debye atoms forming a Debye molecule. Cassini coordinates are used for the numerical solution of the Poisson - Boltzmann equation for the charged cloud. It is shown that attractive forces appear when the following two conditions are satisfied. First, the Debye radius (corresponding to the electron density at half the mean distance between the dust particles) must be approximately equal to half the mean distance between the dust particles. Attraction between the dust particles takes place at a distance equal approximately to half the mean distance between the dust particles. Second, attraction takes place when like charges are concentrated predominantly on the dust particles. If the particles carry a small fraction of charge of the same polarity, repulsion between the particles takes place at all distances.
机译：电荷云中的两个带电尘埃粒子被视为形成德拜分子的德拜原子。卡西尼坐标用于带电云的Poisson-Boltzmann方程的数值解。结果表明，当满足以下两个条件时会出现吸引力。首先，德拜半径（对应于尘埃之间平均距离一半处的电子密度）必须大约等于尘埃之间平均距离的一半。灰尘颗粒之间的吸引发生在大约等于灰尘颗粒之间平均距离的一半的距离处。其次，当类似的电荷主要集中在灰尘颗粒上时，就会发生吸引。如果颗粒携带一小部分相同极性的电荷，则颗粒之间会发生排斥。

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