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Mineralogical Magazine; October 2002; v. 66; no. 5; p. 769-790; DOI: 10.1180/0026461026650060
© 2002 Mineralogical Society of Great Britain and Ireland
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Application of synchrotron radiation and Kawai-type apparatus to various studies in high-pressure mineral physics

T. Irifune*

Geodynamics Research Center, Ehime University, Matsuyama 790-8577, Japan

* E-mail: irifune{at}dpc.ehime-u.ac.jp

A combination of Kawai-type multianvil apparatus and highly brilliant X-rays at the third generation synchrotron radiation facility (SPring-8) in Japan has been successfully applied to various studies in high-pressure mineral sciences such as determinations of phase transition boundaries, P–V–T relations of high-pressure phases, kinetics of phase transitions, structure and viscosity of melts. These studies are now comfortably made at pressures of ~25 GPa and at temperatures to 2300°C, using the intense X-ray beam and the large capacity of the high-pressure apparatus at SPring-8. Moreover, efforts have been made to further extend the pressure limit using large sintered diamond anvils. Thus in situ X-ray observations are now possible at pressures to 50 GPa with the Kawai-type apparatus, which may be doubled in the near future when the potential of sintered diamond anvils is fully utilized. On the other hand, some problems, such as those related to pressure and temperature measurement, have been manifested in these studies. These should be overcome for further quantitative studies of the mineralogy of the Earth’s deep interior based on these techniques.

KEYWORDS: synchrotron radiation, high pressure, mineral physics, multianvil apparatus, phase transition






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