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Coexistence curve of sulfur hexafluoride in the critical region.Ohrn, Kenneth Edward January 1972 (has links)
This thesis studies the shape of the coexistence curve of sulfur hexafluoride in the critical region. The difference in index of refraction between the liquid and vapour phases is shown to be proportional to the difference in density. Thus the critical exponent " β " is measured. These values were found from linear fits to log-log data:
β= 0.339 ± 0.002 - ε ≻ 10 ̄ ²
β= 0.347 ± 0.002 - ε ≺ 3 x 10 ̄ ³
Here, "Tc" is the critical temperature and [ Formula omitted ]The temperature range covered is
3 x 10 ̄ ⁶<- ε ≺ 6 x 10 ̄ ². The critical index of refraction (nc) is measured, with the result
nc = 1.093 ± 0.002 / Science, Faculty of / Physics and Astronomy, Department of / Graduate
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Acoustic detection of liquid-vapour critical pointsOag, Robert Martin January 2001 (has links)
No description available.
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Equation of state near the critical pointKiang, Kenneth Chia Szu 12 1900 (has links)
No description available.
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Correlation length and compressibility for polar fluids near their critical pointsPatterson, Edward Matthew 05 1900 (has links)
No description available.
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Interfacial tension and viscosity in ternary systems near the locus of critical pointsSimonsen, Hans Iver January 1977 (has links)
No description available.
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The critical properties of the n-alkanonesPulliam, Mathlon K. 12 1900 (has links)
No description available.
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Heat pipe performance in the near-critical regimeChitty, Thomas Cooper 05 1900 (has links)
No description available.
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Interferometric determination of diffusion coefficients : binary liquid mixtures near their critical mixing pointHung, Doan Manh January 1976 (has links)
No description available.
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Spin fluctuations and non-fermi liquid behavior close to a quantum critical point in CeNi2Ge2El Zoghbi, Bilal. January 2009 (has links)
Thesis (Ph.D.)--Kent State University, 2009. / Title from PDF t.p. (viewed Apr. 3, 2010). Advisor: Almut Schroeder. Keywords: non-Fermi liquid, CeNi2Ge2, spin fluctuations, neutron scattering, heavy fermions, quantum critical point. Includes bibliographical references.
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The critical behaviour of ethylene and hydrogenDe Bruyn, John Roy January 1987 (has links)
Optical techniques have been used to study the behaviour of ethylene and hydrogen near their liquid-vapour critical points. From measurements of the coexistence curve of ethylene over the reduced temperature range 1.5 x 10⁻⁶ < t < 4.5 x 10⁻², where t — (Tc — T)/Tc and Tc is the critical temperature, we find the critical exponent β = 0.327±.002 and the corrections-to-scaling exponent ∆ = 0.46±.02. Similar measurements for hydrogen over the range 3.2 x 10⁻⁵ < t < 7.0 x 10⁻² give β = 0.326 ± .002 and ∆ = 0.46 ± .02. Measurements of the compressibility of hydrogen give the critical exponent [Formula Omitted] = 1.19 ± .05 and the critical amplitude ratio [Formula Omitted] = 5.2 ± .4. With the exception of ∆, which is slightly lower than its predicted
value of 0.5, the results for these universal quantities are in agreement with theoretical predictions.
The leading coexistence curve amplitude for hydrogen, B₀ = 1.19±.03, is lower than the corresponding values for ethylene, B₀ = 1.56 ± .03, and for other room-temperature fluids. This decrease is in qualitative agreement with the predictions of a theory of quantum effects on critical behaviour. Measurements of the coexistence curve diameter for both fluids show an anomaly near the critical point having a form consistent with the predicted t¹⁻α temperature dependence. These results are in agreement with a recent theory of the effects of many-body forces on the diameter; the hydrogen data indicate that these forces are attractive in that fluid. This suggests that quantum mechanical exchange interactions are important near the critical point of hydrogen. / Science, Faculty of / Physics and Astronomy, Department of / Graduate
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