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    shock-compressed magnesium oxide tagged posts

    Laser Tests reveal New Insights into Key Mineral for Super-Earths

    June 16, 2024, Categories  Astronomy/Space

    View of laser-driven experiments of shock-compressed magnesium oxide (MgO) within the chamber at the Laboratory for Laser Energetics. High-power laser beams are used to compress MgO samples to pressures beyond those found in the center of Earth. A secondary source of X-rays is used to probe MgO’s crystal structure. Brighter regions are glowing plasma emission over nanosecond timescales.
    IMAGE CREDIT: JUNE WICKS/JOHNS HOPKINS UNIVERSITY

    Scientists have for the first time observed how atoms in magnesium oxide morph and melt under ultra-harsh conditions, providing new insights into this key mineral within Earth’s mantle that is known to influence planet formation.

    High-energy laser experiments — which subjected tiny crystals of the mineral to the type of heat and pressure found deep ...

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