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Title: Acoustic travel time gauges for in-situ determination of pressure and temperature in multi-anvil apparatus

Journal Article · · Journal of Applied Physics
DOI:https://doi.org/10.1063/1.4928147· OSTI ID:1466799
 [1];  [1];  [1];  [2];  [3]; ORCiD logo [4];  [4];  [2];  [2]
  1. Stony Brook Univ., NY (United States). Department of Geosciences
  2. Stony Brook Univ., NY (United States). Mineral Physics Institute
  3. National Cheng Kung University, Tainan (Taiwan). Department of Earth Sciences
  4. Univ. of Chicago, IL (United States). GeoSoilEnviroCARS, Center for Advanced Radiation Sources

In this work, we developed a new method for in-situ pressure determination in multi-anvil, high pressure apparatus using an acoustic travel time approach within the framework of acoustoelasticity. The ultrasonic travel times of polycrystalline Al2O3 were calibrated against NaCl pressure scale up to 15 GPa and 900°C in a Kawai-type double-stage multi-anvil apparatus in conjunction with synchrotron X-radiation, thereby providing a convenient and reliable gauge for pressure determination at ambient and high temperatures. The pressures derived from this new travel time method are in excellent agreement with those from the fixed-point methods. Application of this new pressure gauge in an offline experiment revealed a remarkable agreement of the densities of coesite with those from the previous single crystal compression studies under hydrostatic conditions, thus providing strong validation for the current travel time pressure scale. Additionally, the travel time approach not only can be used for continuous in-situ pressure determination at room temperature, high temperatures, during compression and decompression, but also bears a unique capability that none of the previous scales can deliver, i.e., simultaneous pressure and temperature determination with a high accuracy (+-0.16 GPa in pressure and +-17°C in temperature). Therefore, the new in-situ Al2O3 pressure gauge is expected to enable new and expanded opportunities for offline laboratory studies of solid and liquid materials under high pressure and high temperature in multi-anvil apparatus.

Research Organization:
Stony Brook Univ., NY (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA); USDOE Office of Science (SC)
Grant/Contract Number:
NA0001815; FG02-94ER14466; AC02-06CH11357
OSTI ID:
1466799
Alternate ID(s):
OSTI ID: 1229604
Journal Information:
Journal of Applied Physics, Vol. 118, Issue 6; ISSN 0021-8979
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 24 works
Citation information provided by
Web of Science

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Cited By (5)

DIASCoPE: Directly integrated acoustic system combined with pressure experiments—A new method for fast acoustic velocity measurements at high pressure journal March 2017
Elastic anomalies across phase transitions of praseodymium to 12 GPa journal November 2018
Elastic Anomaly and Polyamorphic Transition in (La, Ce)-based Bulk Metallic Glass under Pressure journal April 2017
Experimental and theoretical studies on the elasticity of tungsten to 13 GPa journal August 2018
My Career as a Mineral Physicist at Stony Brook: 1976–2019 journal December 2019