scholarly journals Sound Velocity Measurements in Oxides and Silicates at Simultaneous High Pressures and Temperatures using Ultrasonic Techniques in Multi-Anvil Apparatus in Conjunction with Synchrotron X-radiation Determination of Equation of State.

1998 ◽  
Vol 7 ◽  
pp. 75-78 ◽  
Author(s):  
R. C. Liebermann ◽  
G. Chen ◽  
B. Li ◽  
G. D. Gwanmesia ◽  
J. Chen ◽  
...  
Keyword(s):  
Equation Of State ◽  
Sound Velocity ◽  
High Pressures ◽  
Velocity Measurements ◽  
Ultrasonic Techniques ◽  
High Pressures And Temperatures

scholarly journals High-Pressure Sound Velocity Measurements of Liquids Using In Situ Ultrasonic Techniques in a Multianvil Apparatus

Minerals ◽  
2020 ◽  
Vol 10 (2) ◽  
pp. 126 ◽  
Author(s):  
Zhicheng Jing ◽  
Tony Yu ◽  
Man Xu ◽  
Julien Chantel ◽  
Yanbin Wang
Keyword(s):  
High Pressure ◽  
Sound Velocity ◽  
Velocity Measurements ◽  
Melting Temperatures ◽  
Technical Developments ◽  
Silicate Liquids ◽  
Ultrasonic Techniques ◽  
Photon Source

Sound velocity and equation of state of liquids provide important constraints on the generation, presence, and transport of silicate and metallic melts in the Earth’s interior. Unlike their solid counterparts, these properties of liquids pose great technical challenges to high-pressure measurements and are poorly constrained. Here we present the technical developments that have been made at the GSECARS beamline 13-ID-D of the Advanced Photon Source for the past several years for determination of sound velocity of liquids using the ultrasonic techniques in a 1000-ton Kawai-type multianvil apparatus. Temperature of the sound velocity measurements has been extended to ~2400 K at 4 GPa and ~2000 K at 8 GPa to enable studies of liquids with very high melting temperatures, such as the silicate liquids.

scholarly journals The Takahashi–Bassett Era of Mineral Physics at Rochester in the 1960s

Minerals ◽  
2020 ◽  
Vol 10 (4) ◽  
pp. 344
Author(s):  
William A. Bassett
Keyword(s):  
High Pressure ◽  
High Pressures ◽  
Faculty Position ◽  
Mineral Physics ◽  
High Pressure High Temperature ◽  
High Pressures And Temperatures ◽  
The 1960S ◽  
Talented Students ◽  
The University

The late Taro Takahashi earned a particularly well-deserved reputation for his research at Lamont Geological Observatory on carbon dioxide and its transfer between the atmosphere and the oceans. However, his accomplishments in Mineral Physics, the field embracing the high-pressure–high-temperature properties of materials, has received less attention in spite of his major contributions to this emerging field focused on the interiors of Earth and other planets. In 1963, I was thrilled when he was offered a faculty position in the Geology Department at the University of Rochester, where I had recently joined the faculty. Taro and I worked together for the next 10 years with our talented students exploring the blossoming field just becoming known as Mineral Physics, the name introduced by Orson Anderson and Ed Schreiber, who were also engaged in measuring physical properties at high pressures and temperatures. While their specialty was ultrasonic velocities in minerals subjected to high pressures and temperatures, ours was the determination of crystal structures, compressibilities, and densities of such minerals as iron, its alloys, and silicate minerals, especially those synthesized at high-pressure, such as silicates with the spinel structure. These were materials expected to be found in the Earth’s interior and could therefore provide background for the interpretation of geophysical observations.

scholarly journals Ab initio Determination of the Phase Diagram of CO2 at High Pressures and Temperatures

2020 ◽  
Vol 124 (9) ◽  
Author(s):  
Beatriz H. Cogollo-Olivo ◽  
Sananda Biswas ◽  
Sandro Scandolo ◽  
Javier A. Montoya
Keyword(s):  
Phase Diagram ◽  
Ab Initio ◽  
High Pressures ◽  
High Pressures And Temperatures

Equation of state of fluid n–H2 from P–V–T and sound velocity measurements to 20 kbar

1977 ◽  
Vol 66 (7) ◽  
pp. 3076-3084 ◽  
Author(s):  
R. L. Mills ◽  
D. H. Liebenberg ◽  
J. C. Bronson ◽  
L. C. Schmidt
Keyword(s):  
Equation Of State ◽  
Sound Velocity ◽  
Velocity Measurements

The Determination of Arc Temperature from Sound Velocity Measurements. I

Physics ◽  
1935 ◽  
Vol 6 (6) ◽  
pp. 190-195 ◽  
Author(s):  
Chauncey Guy Suits
Keyword(s):  
Sound Velocity ◽  
Velocity Measurements
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