Ion-induced nucleation in polar one-component fluids.

Ion-induced nucleation in polar one-component fluids.
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DOI:
10.1063/1.2039078
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发表时间:
2005-08
期刊:
The Journal of chemical physics
影响因子:
--
通讯作者:
H. Kitamura;A. Onuki
H. Kitamura;A. Onuki
中科院分区:
其他
文献类型:
--
作者:
H. Kitamura;A. Onuki

文献摘要

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我们提出了一个Ginzburg-Landau理论的离子诱导成核在气相中的极性单组分流体,其中一个液滴生长的离子在其中心。通过计算离子周围的密度分布,我们发现在共存曲线上,在相同温度下,气体中的溶剂化自由能大于液体中的溶剂化自由能。这种差异大大降低了亚稳气体中的成核势垒。
We present a Ginzburg-Landau theory of ion-induced nucleation in a gas phase of polar one-component fluids, where a liquid droplet grows with an ion at its center. By calculating the density profile around an ion, we show that the solvation free energy is larger in gas than in liquid at the same temperature on the coexistence curve. This difference much reduces the nucleation barrier in a metastable gas.