Measurement of the compressibility and sound velocity of helium up to 1 GPa

Kortbeek, P. J.; Ridder, J. J. van de; Biswas, S. N.; Schouten, J.A.

doi:10.1007/bf00513081

Cited by 17 publications

(24 citation statements)

References 12 publications

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“…The velocities are in good agreement within 1.0 % for the measured ones by Kortbeek et al [8] up to 1 GPa. Above 1 GPa, the present results of velocity are in agreement within 0.3 and 0.2 % at 1 and 2 GPa with the calculated values from equations given by Mills et al [7], respectively.…”

Section: Sound Velocity In Heliumsupporting

confidence: 85%

“…The ultrasound velocity is very useful for studying their physical properties under high pressures. Experimentally, many authors measured sound velocity in helium [3][4][5][6][7][8] and neon [5,6,[9][10][11][12][13][14] gases under high pressures.…”

Section: Measurementmentioning

confidence: 99%

“…Recently, Mills et al [7] measured simultaneously the pressure, volume, temperature, and sound velocity in helium to 2 GPa and calculated equation of state. Kortbeek et al measured the density and sound velocity in helium [8] and neon [14] to 1 GPa and calculated the thermodynamic properties up to 6 GPa from equation of state based on statistical mechanical perturbation theory [15] .…”

Section: Measurementmentioning

confidence: 99%

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Measurement of Ultrasound Velocity in Condensed Helium and Neon Gases.

Hanayama

Kimura

Nishitake

1998

THE REVIEW OF HIGH PRESSURE SCIENCE AND TECHNOLOGY

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Section: Sound Velocity In Heliumsupporting

confidence: 85%

Section: Measurementmentioning

confidence: 99%

Section: Measurementmentioning

confidence: 99%

See 1 more Smart Citation

Measurement of Ultrasound Velocity in Condensed Helium and Neon Gases.

Hanayama

Kimura

Nishitake

1998

THE REVIEW OF HIGH PRESSURE SCIENCE AND TECHNOLOGY

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“…Then we discuss updates to the error estimates of the B n . After that, we turn to an analysis of the acoustic virial coefficients, and how they compare to values regressed from experiment; for this purpose, we use the data reported by Plumb and Cataland, Gammon, and Kortbeek et al We then consider how well the AVEOS provides values for the speed of sound, again comparing to experiment, and finally, we examine the convergence behavior of the AVEOS, and its ability to self-assess its accuracy. We finish with some concluding remarks.…”

Section: Introductionmentioning

confidence: 99%

Speed of Sound in Helium-4 from Ab Initio Acoustic Virial Coefficients

2021

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We present values for 4He of temperature-dependent acoustic virial coefficients that appear in series expansions for the speed of sound in the gas (AVEOS). Coefficients are computed from first-principles molecular models from the literature and are presented for expansions both in density and in pressure. These coefficients, labeled here as Ω n and ω n , respectively, are determined from previously reported values of the pressure virials B n as a function of temperature T. Data are provided for T from 2.6 to 1000 K and for n from 2 to 7; those for n = 2–5 include nuclear quantum effects but not exchange, and those for n = 6 and 7 are semiclassical. Analysis of experimental data for the speed of sound from the literature is performed to estimate thermodynamic temperatures, to regress coefficient values to compare to ab initio results, and to evaluate the performance of the AVEOS for pressures up to 1000 MPa. A study of the convergence of the series shows that the pressure-expanded AVEOS diverges at about 100 MPa, while the density-expanded series appears to remain convergent over the entire pressure range; at the highest pressures, the seventh-order series still yields results that are within 1% of the correct value of the speed of sound, at least when applied at temperatures above 200 K.

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“…3, the methane and helium data of Kortbeek et al [7,8] as well the mixture data of this work are plotted for several pressures at 298.15 K. It should be noted that at 300 K the sound velocity of methane is larger than that of the helium (lighter molecule). Moreover, it is shown that the value of the sound velocity of this binary system does not always change monotonously with the concentration at constant temperature and constant pressure.…”

Section: Discussionmentioning

confidence: 70%

The sound velocity of an equimolar mixture of CH4 and He from 2 kbar to 8 kbar and from 273 K to 318 K

Zhang

Schouten

1994

Physica A: Statistical Mechanics and its Applications

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The sound velocity of an equimolar mixture of CH4 and He from 2 kbar to 8 kbar and from 273 K to 318 K Zhang, W.; Schouten, J.A. Disclaimer/Complaints regulationsIf you believe that digital publication of certain material infringes any of your rights or (privacy) interests, please let the Library know, stating your reasons. In case of a legitimate complaint, the Library will make the material inaccessible and/or remove it from the website. Please Ask the Library: http://uba.uva.nl/en/contact, or a letter to: Library of the University of Amsterdam, Secretariat, Singel 425, 1012 WP Amsterdam, The Netherlands. You will be contacted as soon as possible. AbstractBy using a phase-comparison pulse-echo technique, the sound velocity of an equimolar mixture of methane and helium has been measured at temperatures between 273 K and 318 K and at pressures up to 8 kbar. The overall accuracy in the sound velocity is expected to be better than 0.1%.

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Measurement of the compressibility and sound velocity of helium up to 1 GPa

Cited by 17 publications

References 12 publications

Measurement of Ultrasound Velocity in Condensed Helium and Neon Gases.

Measurement of Ultrasound Velocity in Condensed Helium and Neon Gases.

Speed of Sound in Helium-4 from Ab Initio Acoustic Virial Coefficients

The sound velocity of an equimolar mixture of CH4 and He from 2 kbar to 8 kbar and from 273 K to 318 K

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