Frontiers in Physics | |
Isobaric Critical Exponents: Test of Analyticity Against NIST Reference Data | |
Park, Jeong-Hyuck1  Cho, Wonyoung1  Kim, Do-Hyun1  | |
[1] Department of Physics, Sogang University, South Korea | |
关键词: Isobaric Thermal Expansion Coefficient; Critical point; critical exponents; Analyticity; NIST tests; | |
DOI : 10.3389/fphy.2018.00112 | |
学科分类:物理(综合) | |
来源: Frontiers | |
【 摘 要 】
Finite systems may undergo first or second order phase transitions under not isovolumetric but isobaric condition. The `analyticity' of a finite-system partition function has been argued to imply universal values for isobaric critical exponents, $\alpha_{{\scriptscriptstyle{P}}}$, $\beta_{{\scriptscriptstyle{P}}}$ and $\gamma_{{\scriptscriptstyle{P}}}$. Here we test this prediction by analyzing NIST REFPROP data for twenty major molecules, including $\mathrm{H_{2}O, CO_{2}, O_{2}}$, \textit{etc.} We report they are consistent with the prediction for temperature range, $10^{-5} T_{c}$, all the fluids seem to indicate the universal value of ${n=2}$.
【 授权许可】
CC BY
【 预 览 】
Files | Size | Format | View |
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RO201904021833455ZK.pdf | 1381KB | download |