Research Articles

Ultrahigh-Pressure Melting of Lead: A Multidisciplinary Study

Science  27 Apr 1990:
Vol. 248, Issue 4954, pp. 462-465
DOI: 10.1126/science.248.4954.462

Abstract

Measurements of the melting temperature of lead, carried out to pressures of 1 megabar (1011 pascal) and temperatures near 4000 kelvin by means of a laser-heated diamond cell, are in excellent agreement with the results of previous shock-wave experiments. The data are analyzed by means of first principles quantum mechanical calculations, and the agreement documents the reliability of current experimental and theoretical techniques for studies of melting at ultrahigh pressures. These studies have potentially wide-ranging applications, from planetary science to condensed matter physics.

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