High-pressure triple point in helium: The melting line of helium up to 240 kbar

Willem L. Vos*, Mariëlle G.E. Van Hinsberg, Jan A. Schouten

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

38 Citations (Scopus)
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Abstract

A quasi-isochoric scanning method has been used to study the phase diagram of helium from 200 to 460 K and from 70 to 240 kbar. The melting line is shown to be a smooth curve that lies close to extrapolations from much lower pressure. Also, no anomalies were observed near room temperature, and thus there is no evidence for an fcc-bcc transition in the solid phase. On the basis of the experiments, it is concluded that the fcc-bcc-fluid triple point reported by previous investigators does not exist. The implications for the phase diagram are discussed.

Original languageEnglish
Pages (from-to)6106-6109
Number of pages4
JournalPhysical Review B
Volume42
Issue number10
DOIs
Publication statusPublished - 1 Oct 1990
Externally publishedYes

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