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Laser-Heated Diamond Cell Exposes Stability at Earth's Mantle

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Using a laser heating system, a team of scientists at Carnegie Institution of Washington and at the University of Chicago has determined that the rock salt structure of magnesiowüstite is stable at the pressures and temperatures of the Earth's lower mantle. The findings, which appeared in the April 15 issue of PNAS, challenge the hypothesis that the heterogeneity of seismic waves in the lower mantle is the result of a phase transformation of the mineral at the conditions in the lower mantle. The scientists employed a multimode Nd:YLF laser and a diamond anvil cell at Argonne National...Read full article

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    Published: June 2003
    Carnegie Institution of WashingtonEarths lower mantlelaser heating systemResearch & Technologyrock salt structure of magnesiowüstiteTech PulseLasers

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