Ideal Gas Behavior

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Thomas J. Bruno - One of the best experts on this subject based on the ideXlab platform.

  • Vapor Pressure Measurements by the Gas Saturation Method: The Influence of the Carrier Gas
    Journal of Chemical & Engineering Data, 2015
    Co-Authors: Jason A. Widegren, Mark O. Mclinden, Allan H Harvey, Thomas J. Bruno
    Abstract:

    The influence of the carrier Gas on vapor pressure (psat) measurements by the Gas saturation method was studied. Eicosane (C20H42) was used as the test compound. Helium (He), nitrogen (N2), carbon dioxide (CO2), and sulfur hexafluoride (SF6) were chosen as the carrier Gases. The apparent psat of eicosane was determined repeatedly in each of the four carrier Gases at 323.15 K, and was found to increase with carrier Gas in the order He < N2 < CO2 < SF6. On average, the apparent psat was 26% higher when measured with SF6 than when measured with helium, which shows that the assumption of Ideal-Gas Behavior for Gas saturation measurements can lead to large errors.

  • Vapor Pressure Measurements by the Gas Saturation Method: The Influence of the Carrier Gas
    Journal of Chemical & Engineering Data, 2015
    Co-Authors: Jason A. Widegren, Mark O. Mclinden, Allan H Harvey, Thomas J. Bruno
    Abstract:

    The influence of the carrier Gas on vapor pressure (psat) measurements by the Gas saturation method was studied. Eicosane (C20H42) was used as the test compound. Helium (He), nitrogen (N2), carbon dioxide (CO2), and sulfur hexafluoride (SF6) were chosen as the carrier Gases. The apparent psat of eicosane was determined repeatedly in each of the four carrier Gases at 323.15 K, and was found to increase with carrier Gas in the order He < N2 < CO2 < SF6. On average, the apparent psat was 26% higher when measured with SF6 than when measured with helium, which shows that the assumption of Ideal-Gas Behavior for Gas saturation measurements can lead to large errors.

Alain Aspect - One of the best experts on this subject based on the ideXlab platform.

  • Critical temperature of a trapped, weakly interacting Bose Gas.
    Physical review letters, 2004
    Co-Authors: Fabrice Gerbier, Joseph H. Thywissen, Simon Richard, Mathilde Hugbart, Philippe Bouyer, Alain Aspect
    Abstract:

    We report on measurements of the critical temperature of a harmonically trapped, weakly interacting Bose Gas as a function of atom number. Our results exclude Ideal-Gas Behavior by more than two standard deviations, and agree quantitatively with mean-field theory. At our level of sensitivity, we find no additional shift due to critical fluctuations. In the course of this measurement, the onset of hydrodynamic expansion in the thermal component has been observed. Our thermometry method takes this feature into account.

  • The critical temperature of a trapped, weakly interacting Bose Gas
    Physical Review Letters, 2004
    Co-Authors: Fabrice Gerbier, Joseph H. Thywissen, Simon Richard, Mathilde Hugbart, Philippe Bouyer, Alain Aspect
    Abstract:

    We report on measurements of the critical temperature of aharmonically trapped, weakly interacting Bose Gas as a function ofatom number. Our results exclude Ideal-Gas Behavior by more thantwo standard deviations, and agree quantitatively with mean-fieldtheory. At our level of sensitivity, we find no additional shiftdue to critical fluctuations. In the course of this measurement,the onset of hydrodynamic expansion in the thermal component hasbeen observed. Our thermometry method takes this feature intoaccount.

Jason A. Widegren - One of the best experts on this subject based on the ideXlab platform.

  • Vapor Pressure Measurements by the Gas Saturation Method: The Influence of the Carrier Gas
    Journal of Chemical & Engineering Data, 2015
    Co-Authors: Jason A. Widegren, Mark O. Mclinden, Allan H Harvey, Thomas J. Bruno
    Abstract:

    The influence of the carrier Gas on vapor pressure (psat) measurements by the Gas saturation method was studied. Eicosane (C20H42) was used as the test compound. Helium (He), nitrogen (N2), carbon dioxide (CO2), and sulfur hexafluoride (SF6) were chosen as the carrier Gases. The apparent psat of eicosane was determined repeatedly in each of the four carrier Gases at 323.15 K, and was found to increase with carrier Gas in the order He < N2 < CO2 < SF6. On average, the apparent psat was 26% higher when measured with SF6 than when measured with helium, which shows that the assumption of Ideal-Gas Behavior for Gas saturation measurements can lead to large errors.

  • Vapor Pressure Measurements by the Gas Saturation Method: The Influence of the Carrier Gas
    Journal of Chemical & Engineering Data, 2015
    Co-Authors: Jason A. Widegren, Mark O. Mclinden, Allan H Harvey, Thomas J. Bruno
    Abstract:

    The influence of the carrier Gas on vapor pressure (psat) measurements by the Gas saturation method was studied. Eicosane (C20H42) was used as the test compound. Helium (He), nitrogen (N2), carbon dioxide (CO2), and sulfur hexafluoride (SF6) were chosen as the carrier Gases. The apparent psat of eicosane was determined repeatedly in each of the four carrier Gases at 323.15 K, and was found to increase with carrier Gas in the order He < N2 < CO2 < SF6. On average, the apparent psat was 26% higher when measured with SF6 than when measured with helium, which shows that the assumption of Ideal-Gas Behavior for Gas saturation measurements can lead to large errors.

Allan H Harvey - One of the best experts on this subject based on the ideXlab platform.

  • Anomaly in the Virial Expansion of IAPWS-95 at Low Temperatures
    International Journal of Thermophysics, 2019
    Co-Authors: Allan H Harvey
    Abstract:

    In the standard reference equation of state for the thermodynamic properties of water, known as IAPWS-95, the fourth virial coefficient D ( T ) becomes abnormally large in magnitude at temperatures below approximately 300 K. At conditions where a virial expansion using only second and third virial coefficients should be essentially exact (such as vapors at pressures near 100 Pa or 1000 Pa), such a truncated expansion may miss on the order of 2 % of the deviation from Ideal-Gas Behavior in the compressibility factor or the fugacity. The term in IAPWS-95 that causes this issue is identified, and suggestions are made for future equation-of-state development.

  • Vapor Pressure Measurements by the Gas Saturation Method: The Influence of the Carrier Gas
    Journal of Chemical & Engineering Data, 2015
    Co-Authors: Jason A. Widegren, Mark O. Mclinden, Allan H Harvey, Thomas J. Bruno
    Abstract:

    The influence of the carrier Gas on vapor pressure (psat) measurements by the Gas saturation method was studied. Eicosane (C20H42) was used as the test compound. Helium (He), nitrogen (N2), carbon dioxide (CO2), and sulfur hexafluoride (SF6) were chosen as the carrier Gases. The apparent psat of eicosane was determined repeatedly in each of the four carrier Gases at 323.15 K, and was found to increase with carrier Gas in the order He < N2 < CO2 < SF6. On average, the apparent psat was 26% higher when measured with SF6 than when measured with helium, which shows that the assumption of Ideal-Gas Behavior for Gas saturation measurements can lead to large errors.

  • Vapor Pressure Measurements by the Gas Saturation Method: The Influence of the Carrier Gas
    Journal of Chemical & Engineering Data, 2015
    Co-Authors: Jason A. Widegren, Mark O. Mclinden, Allan H Harvey, Thomas J. Bruno
    Abstract:

    The influence of the carrier Gas on vapor pressure (psat) measurements by the Gas saturation method was studied. Eicosane (C20H42) was used as the test compound. Helium (He), nitrogen (N2), carbon dioxide (CO2), and sulfur hexafluoride (SF6) were chosen as the carrier Gases. The apparent psat of eicosane was determined repeatedly in each of the four carrier Gases at 323.15 K, and was found to increase with carrier Gas in the order He < N2 < CO2 < SF6. On average, the apparent psat was 26% higher when measured with SF6 than when measured with helium, which shows that the assumption of Ideal-Gas Behavior for Gas saturation measurements can lead to large errors.

Fabrice Gerbier - One of the best experts on this subject based on the ideXlab platform.

  • Critical temperature of a trapped, weakly interacting Bose Gas.
    Physical review letters, 2004
    Co-Authors: Fabrice Gerbier, Joseph H. Thywissen, Simon Richard, Mathilde Hugbart, Philippe Bouyer, Alain Aspect
    Abstract:

    We report on measurements of the critical temperature of a harmonically trapped, weakly interacting Bose Gas as a function of atom number. Our results exclude Ideal-Gas Behavior by more than two standard deviations, and agree quantitatively with mean-field theory. At our level of sensitivity, we find no additional shift due to critical fluctuations. In the course of this measurement, the onset of hydrodynamic expansion in the thermal component has been observed. Our thermometry method takes this feature into account.

  • The critical temperature of a trapped, weakly interacting Bose Gas
    Physical Review Letters, 2004
    Co-Authors: Fabrice Gerbier, Joseph H. Thywissen, Simon Richard, Mathilde Hugbart, Philippe Bouyer, Alain Aspect
    Abstract:

    We report on measurements of the critical temperature of aharmonically trapped, weakly interacting Bose Gas as a function ofatom number. Our results exclude Ideal-Gas Behavior by more thantwo standard deviations, and agree quantitatively with mean-fieldtheory. At our level of sensitivity, we find no additional shiftdue to critical fluctuations. In the course of this measurement,the onset of hydrodynamic expansion in the thermal component hasbeen observed. Our thermometry method takes this feature intoaccount.