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arXiv 0903.4468physics.plasm-ph
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最简单等离子体模型中的相变

Phase Transition in the Simplest Plasma Model

Igor Iosilevskiy

摘要:

我们研究了具有上临界点的气-液型相变,在具有均匀但可压缩的补偿背景的单组分等离子体模型(OCP)的一个变体中。我们计算了临界和三相点,旋节,和两相共存曲线(双节)的参数。我们分析了这种最简单的等离子体相变与平衡非均匀等离子体中空间电荷分布异常的联系,在局域密度近似下的费米或泊松玻尔兹曼型。

英文摘要:

We have investigated the phase transition of the gas-liquid type, with an upper critical point, in a variant of the One Component Plasma model (OCP) that has a uniform but compressible compensating background. We have calculated the parameters of the critical and triple points, spinodals, and two-phase coexistence curves (binodals). We have analyzed the connection of this simplest plasma phase transition with anomalies in the spatial charge profiles of equilibrium non-uniform plasma in the local-density approximations of Thomas-Fermi or Poisson-Boltzmann-type.

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