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arXiv physics/0209106physics.chem-phphysics.atm-clus
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正电子能谱法测定弯曲界面液体的微观表面张力

The Determination of Microscopic Surface Tension of Liquids with a Curved Interphase Boundary by Means of Positron Spectroscopy

Sergey V. Stepanov, Vsevolod M. Byakov, Olga P. Stepanova

摘要:

基于对正电子素气泡模型的新阐述,建立了纳米气泡微观表面张力$σ(R)$的测定方法。与现有的无结构Ps气泡模型相比,我们的版本包含实验已知的液体分子特性。在微观基础上导出了Ps泡半径$R$与$σ(R)$之间的关系,类似于Tolman方程. $σ(R)$的数值是为大量的液体和液化气体确定的。结果与文献中的理论预期和独立评价一致。

英文摘要:

The method for determination the microscopic surface tension $σ(R)$ of nanobubbles is developed based on the new elaboration of the positronium bubble model. In contrast to existing structureless Ps bubble models, our version contains experimentally known molecular characteristics of liquids. The relationship, similar to Tolman's equation, between $σ(R)$ and the radius $R$ of the Ps bubble is derived on a microscopic basis. Numerical values for $σ(R)$ are determined for a large number of liquids and liquified gases. The results are in agreement with the theoretical expectations and independent evaluations, available in literature.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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