TY - JOUR
T1 - Development of in situ Brillouin spectroscopy at high pressure and high temperature with synchrotron radiation and infrared laser heating system
T2 - Application to the Earth's deep interior
AU - Murakami, Motohiko
AU - Asahara, Yuki
AU - Ohishi, Yasuo
AU - Hirao, Naohisa
AU - Hirose, Kei
N1 - Funding Information:
The authors thank S.V. Sinogeikin for invaluable advice and suggestions on installation of Brillouin scattering measurement system. J.R. Sandercock and E. Eisenegger are acknowledged for their technical support of initial setup of the interferometer. We are grateful to A. Yoneda and F.H. Sohag for their help with the measurement of BK7 using ultrasonic interferometry. We thank N. Sata for his advice and suggestions on CO 2 laser system. We also thank T. Takemoto for his technical support to improve the system in SPring-8. B. Mysen is acknowledged for his valuable comments. Our many thanks go to anonymous reviewers for detailed, thoughtful and constructive reviews of the manuscript. This work was performed under the approval of the proposal Nos. 2006A0099, 2006B0099 and 2007A0099 of SPring-8. This study was supported by the Grant-in-aid for ‘Stagnant Slab Project’ in Scientific Research on Priority Areas by the Ministry of Education, Culture, Sports, Science and Technology, Japan. MM was supported by the Grant-in-Aid for Young Scientists (A) (#18684029) by the Ministry of Education, Culture, Sports, Science and Technology, Japan.
PY - 2009/5
Y1 - 2009/5
N2 - Seismic wave velocity profiles in the Earth provide one of the strongest constraints on structure, mineralogy and elastic properties of the Earth's deep interior. Accurate sound velocity data of deep Earth materials under relevant high-pressure and high-temperature conditions, therefore, are essential for interpretation of seismic data. Such information can be directly obtained from Brillouin scattering measurement. Here we describe an in situ Brillouin scattering system for measurements at high pressure and high temperature using a laser heated diamond anvil cell and synchrotron radiation for sample characterization. The system has been used with single-crystal and polycrystalline materials, and with glass and fluid phase. It provided high quality sound velocity and elastic data with X-ray diffraction data at high pressure and/or high temperature. Those combined techniques can potentially offer the essential information for resolving many remaining issues in mineral physics.
AB - Seismic wave velocity profiles in the Earth provide one of the strongest constraints on structure, mineralogy and elastic properties of the Earth's deep interior. Accurate sound velocity data of deep Earth materials under relevant high-pressure and high-temperature conditions, therefore, are essential for interpretation of seismic data. Such information can be directly obtained from Brillouin scattering measurement. Here we describe an in situ Brillouin scattering system for measurements at high pressure and high temperature using a laser heated diamond anvil cell and synchrotron radiation for sample characterization. The system has been used with single-crystal and polycrystalline materials, and with glass and fluid phase. It provided high quality sound velocity and elastic data with X-ray diffraction data at high pressure and/or high temperature. Those combined techniques can potentially offer the essential information for resolving many remaining issues in mineral physics.
KW - Earth's interior
KW - Elasticity
KW - High pressure and high temperature
KW - Mineral physics
KW - Sound velocities
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U2 - 10.1016/j.pepi.2008.07.030
DO - 10.1016/j.pepi.2008.07.030
M3 - Article
AN - SCOPUS:67349162519
VL - 174
SP - 282
EP - 291
JO - Physics of the Earth and Planetary Interiors
JF - Physics of the Earth and Planetary Interiors
SN - 0031-9201
IS - 1-4
ER -