Measurement of thermal diffusivity at high pressure using a transient heating technique

被引：59

作者：

Beck, Pierre ^{[1
]}

Goncharov, Alexander F. ^{[1
]}

Struzhkin, Viktor V. ^{[1
]}

Militzer, Burkhard ^{[1
]}

Mao, Ho-Kwang ^{[1
]}

Hemley, Russell J. ^{[1
]}

机构：

[1] Carnegie Inst Washington, Geophys Lab, Washington, DC 20015 USA

来源：

APPLIED PHYSICS LETTERS | 2007年 / 91卷 / 18期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1063/1.2799243

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

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=32 GPa and T=2600 K). 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. (C) 2007 American Institute of Physics.

引用

页数：3

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