Related Experiment Video
Updated: Jan 3, 2026
07:26
Synthesis and Microdiffraction at Extreme Pressures and Temperatures
Published on: October 7, 2013
11.6K
Optical access to multi-anvil apparatus with ultrasonic method under high-pressure environment
Qizhe Tang1, Yonggang Liu1, Wei Song1
1Key Laboratory of High-Temperature and High-Pressure Study of the Earth's Interior, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, China.
The Review of Scientific Instruments
|November 30, 2019
Summary
This study introduces optical access to large volume presses for high-pressure experiments. This innovation enables precise sample thickness measurements, enhancing ultrasonic data in geophysics research.
Area of Science:
- Geophysics
- Materials Science
- High-Pressure Physics
Background:
- Optical methods are crucial for high-pressure, high-temperature (HPHT) experiments.
- Optical investigations in the visible spectrum within large volume presses remain underexplored.
- Existing HPHT techniques often lack direct visual sample characterization.
Purpose of the Study:
- To integrate optical access into a multianvil apparatus (MAA) for HPHT experiments.
- To develop a method for in-situ sample thickness measurement under extreme conditions.
- To demonstrate the feasibility and utility of optical access in MAA for scientific research.
Main Methods:
- Modification of a multianvil apparatus to include optical access ports.
- Acquisition of optical images of samples under high pressure and temperature.
- Development of a technique for thickness measurement from optical images.
- Integration of optical thickness data with ultrasonic measurements.
Main Results:
- Successful incorporation of optical access into the MAA.
- Demonstrated capability for in-situ optical imaging and thickness measurement of samples.
- Enhanced accuracy of ultrasonic measurements through integrated optical thickness data.
- Validation of the ruby pressure scale within the modified apparatus.
Conclusions:
- The modified MAA with optical access provides a robust platform for advanced HPHT research.
- In-situ optical thickness measurement is a valuable addition to high-pressure experimental techniques.
- This methodology opens new avenues for optical investigations in large volume press systems.
