Amol Karandikar is a postdoctoral associate working with Tim Strobel and Reinhard Boehler. Amol is working on material synthesis and phase stability of carbon/hydrogen rich compounds and light element transport in metals.
Washington, DC—In Earth’s interior, water (H2O) plays an important role in rock physics, but geoscientists rarely treat water in its constituent forms, that is as hydrogen plus oxygen. New work from a team led by the Geophysical Laboratory's Dave Mao has identified that hydrogen can escape from the water under conditions found in Earth’s lower mantle leading to a new paradigm in lower mantle chemistry. Their results were published in Proceeding of the National Academic Science, U.S.A.
Washington, DC— Although helium is the second most-abundant element (after hydrogen) in the universe, it doesn’t play well with others. It is a member of a family of seven elements called the noble gases, which are called that because of their chemical aloofness—they don’t easily form compounds with other elements. Helium, widely believed to be the most inert element, has no stable compounds under normal conditions.
Yingwei Fei, a high-pressure experimentalist at the Geophysical Laboratory, and Peter Driscoll, a theoretical geophysicist at the Department of Terrestrial Magnetism, have been awarded a Carnegie Science Venture Grant for their project “Direct Shock Compression of Pre-synthesized Mantle Mineral to Super-Earth Interior Conditions.”
Washington, DC— Phase transitions surround us—for instance, liquid water changes to ice when frozen and to steam when boiled. Now, researchers at the Geophysical Laboratory have discovered a new phenomenon of so-called metastability in a liquid phase. A metastable liquid is not quite stable. This state is common in supercooled liquids, which are liquids that cool below the freezing point without turning into a solid or a crystal.