Viscosity of the isotopes of hydrogen and their intermolecular force potentials

J. Kestin, A. Nagashima

  • 6 Citations

Abstract

Measured values of the viscosity are presented for the three isotopes of hydrogen: H2, HD, and D2 at 20°C and at 30°C, all under atmospheric pressure. The ratios of the viscosity of any one pair of the above gases is obtained very accurately, the major source of error being connected with the uncertainties in the knowledge of the impurities present in the gases. On the basis of the Chapman-Enskog theory for the viscosity of gases composed of spherically-symmetrical molecules whose potentials can be represented by the product V(r) = ∈f(σ/r), it is concluded that all three isotopes have different intermolecular constants. However, the differences which characterize the intermolecular potentials of H2 and D 2 are not likely to be large. Calculations which attempt to take into account the differences in the potentials of H2 and D2 by differences in polarizability are not confirmed by the present measurements.

Original languageEnglish
Pages (from-to)730-734
Number of pages5
JournalPhysics of Fluids
Volume7
Issue number5
StatePublished - 1964
Externally publishedYes

Fingerprint

Isotopes
Viscosity
Hydrogen
Gases
Viscosity of gases
Atmospheric pressure
Impurities
Molecules

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Physics and Astronomy(all)
  • Mechanics of Materials
  • Computational Mechanics
  • Fluid Flow and Transfer Processes

Cite this

Viscosity of the isotopes of hydrogen and their intermolecular force potentials. / Kestin, J.; Nagashima, A.

In: Physics of Fluids, Vol. 7, No. 5, 1964, p. 730-734.

Research output: Contribution to journalArticle

Kestin, J.; Nagashima, A. / Viscosity of the isotopes of hydrogen and their intermolecular force potentials.

In: Physics of Fluids, Vol. 7, No. 5, 1964, p. 730-734.

Research output: Contribution to journalArticle

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