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An ultrahigh‐pressure furnace assembly to 100 Kbar and 1500°C with minimum temperature uncertainty
Author(s) -
Takahashi Eiichi,
Yamada Hirohisa,
Ito Eiji
Publication year - 1982
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/gl009i008p00805
Subject(s) - piston (optics) , graphite , temperature gradient , materials science , phase (matter) , melting temperature , cylinder , geology , thermodynamics , mineralogy , composite material , chemistry , optics , geometry , physics , meteorology , mathematics , organic chemistry , wavefront
An ultrahigh‐pressure furnace assembly using a multi‐anvil‐type apparatus, capable of conducting phase equilibrium studies up to 100 kbar and 1500°C with temperature uncertainty similar to that of piston‐cylinder apparatus, is reported. Temperature distribution within the furnace assembly was studied by a compositional mapping of diopsidic clinopyroxene coexisting with orthopyroxene and garnet. A graphite heater with a 5° tapered inner wall (3 mm O.D., 11 mm long) was found to give a temperature gradient less than 50°C/mm, whereas that in a conventional straight‐wall heater was greater than 200°C/mm.
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