Phase behavior of the system He-N2 at high pressures

W. L. Vos, L. C. van den Bergh, J. A. Schouten

Research output: Contribution to journalArticleAcademicpeer-review

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Abstract

Recent investigation at our institute revealed that the solid-fluid-fluid three-phase line of the system helium-nitrogen shows two quadruple points in the pressure range up to 10 GPa. Since each quadruple point is connected with four three-phase lines, the phase diagram is very complicated. We have detected the phase transitions representing solid-solid-fluid equilibria. Moreover, two lines of constant composition have been determined as a function of temperature and pressure. These results are discussed together with the implications for the phase diagram of both He-N2 and pure nitrogen.

Original languageEnglish
Pages (from-to)15-25
Number of pages11
JournalInternational Journal of Thermophysics
Volume10
Issue number1
DOIs
Publication statusPublished - 1 Jan 1989
Externally publishedYes

Fingerprint

fluids
phase diagrams
nitrogen
helium
temperature

Keywords

  • binary mixtures
  • diamond anvil cell
  • helium
  • high pressure
  • nitrogen
  • phase equilibria

Cite this

Vos, W. L. ; van den Bergh, L. C. ; Schouten, J. A. / Phase behavior of the system He-N2 at high pressures. In: International Journal of Thermophysics. 1989 ; Vol. 10, No. 1. pp. 15-25.
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Phase behavior of the system He-N2 at high pressures. / Vos, W. L.; van den Bergh, L. C.; Schouten, J. A.

In: International Journal of Thermophysics, Vol. 10, No. 1, 01.01.1989, p. 15-25.

Research output: Contribution to journalArticleAcademicpeer-review

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AU - van den Bergh, L. C.

AU - Schouten, J. A.

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AB - Recent investigation at our institute revealed that the solid-fluid-fluid three-phase line of the system helium-nitrogen shows two quadruple points in the pressure range up to 10 GPa. Since each quadruple point is connected with four three-phase lines, the phase diagram is very complicated. We have detected the phase transitions representing solid-solid-fluid equilibria. Moreover, two lines of constant composition have been determined as a function of temperature and pressure. These results are discussed together with the implications for the phase diagram of both He-N2 and pure nitrogen.

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KW - nitrogen

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