TY - JOUR
T1 - High-pressure triple point in helium
T2 - The melting line of helium up to 240 kbar
AU - Vos, Willem L.
AU - Van Hinsberg, Mariëlle G.E.
AU - Schouten, Jan A.
PY - 1990/10/1
Y1 - 1990/10/1
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=0001147578&partnerID=8YFLogxK
U2 - 10.1103/PhysRevB.42.6106
DO - 10.1103/PhysRevB.42.6106
M3 - Article
AN - SCOPUS:0001147578
SN - 0163-1829
VL - 42
SP - 6106
EP - 6109
JO - Physical Review B (Condensed Matter)
JF - Physical Review B (Condensed Matter)
IS - 10
ER -