Abstract
We describe a flash-heating procedure designed to measure thermal diffusivity of materials at high pressure and temperature in diamond anvil cells. This technique involves time-resolved radiometry combined with a pulsed IR laser source. Results for MgO, NaCl, and KCl are presented (to P=32GPa and T=2600K). These measurements agree with previous studies at low pressure and high temperature and enable to test models for the combined P-T dependence of thermal conductivity. This technique can be extended to a broader range of pressures and can be used to address a variety of problems in geoscience, planetary sciences, and materials science.
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Dates
Type | When |
---|---|
Created | 17 years, 9 months ago (Nov. 2, 2007, 6:37 p.m.) |
Deposited | 2 years, 2 months ago (June 24, 2023, 1:12 a.m.) |
Indexed | 3 weeks, 5 days ago (July 30, 2025, 6:49 a.m.) |
Issued | 17 years, 9 months ago (Oct. 29, 2007) |
Published | 17 years, 9 months ago (Oct. 29, 2007) |
Published Online | 17 years, 9 months ago (Nov. 2, 2007) |
Published Print | 17 years, 9 months ago (Oct. 29, 2007) |
@article{Beck_2007, title={Measurement of thermal diffusivity at high pressure using a transient heating technique}, volume={91}, ISSN={1077-3118}, url={http://dx.doi.org/10.1063/1.2799243}, DOI={10.1063/1.2799243}, number={18}, journal={Applied Physics Letters}, publisher={AIP Publishing}, author={Beck, Pierre and Goncharov, Alexander F. and Struzhkin, Viktor V. and Militzer, Burkhard and Mao, Ho-kwang and Hemley, Russell J.}, year={2007}, month=oct }