Measurement of Body-Centered-Cubic Aluminum at 475 GPa.

Autor:	Polsin DN; Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623-1299, USA.; Department of Physics and Astronomy, University of Rochester, Rochester, New York 14627, USA., Fratanduono DE; Lawrence Livermore National Laboratory, Livermore, California 94550, USA., Rygg JR; Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623-1299, USA.; Department of Physics and Astronomy, University of Rochester, Rochester, New York 14627, USA.; Department of Mechanical Engineering, University of Rochester, Rochester, New York 14627, USA., Lazicki A; Lawrence Livermore National Laboratory, Livermore, California 94550, USA., Smith RF; Lawrence Livermore National Laboratory, Livermore, California 94550, USA., Eggert JH; Lawrence Livermore National Laboratory, Livermore, California 94550, USA., Gregor MC; Lawrence Livermore National Laboratory, Livermore, California 94550, USA., Henderson BH; Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623-1299, USA.; Department of Physics and Astronomy, University of Rochester, Rochester, New York 14627, USA., Delettrez JA; Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623-1299, USA., Kraus RG; Lawrence Livermore National Laboratory, Livermore, California 94550, USA., Celliers PM; Lawrence Livermore National Laboratory, Livermore, California 94550, USA., Coppari F; Lawrence Livermore National Laboratory, Livermore, California 94550, USA., Swift DC; Lawrence Livermore National Laboratory, Livermore, California 94550, USA., McCoy CA; Sandia National Laboratories, PO Box 5800, Albuquerque, New Mexico 87185-1189, USA., Seagle CT; Sandia National Laboratories, PO Box 5800, Albuquerque, New Mexico 87185-1189, USA., Davis JP; Sandia National Laboratories, PO Box 5800, Albuquerque, New Mexico 87185-1189, USA., Burns SJ; Department of Mechanical Engineering, University of Rochester, Rochester, New York 14627, USA., Collins GW; Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623-1299, USA.; Department of Physics and Astronomy, University of Rochester, Rochester, New York 14627, USA.; Department of Mechanical Engineering, University of Rochester, Rochester, New York 14627, USA., Boehly TR; Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623-1299, USA.
Jazyk:	angličtina
Zdroj:	Physical review letters [Phys Rev Lett] 2017 Oct 27; Vol. 119 (17), pp. 175702. Date of Electronic Publication: 2017 Oct 27.
DOI:	10.1103/PhysRevLett.119.175702
Abstrakt:	Nanosecond in situ x-ray diffraction and simultaneous velocimetry measurements were used to determine the crystal structure and pressure, respectively, of ramp-compressed aluminum at stress states between 111 and 475 GPa. The solid-solid Al phase transformations, fcc-hcp and hcp-bcc, are observed at 216±9 and 321±12  GPa, respectively, with the bcc phase persisting to 475 GPa. The high-pressure crystallographic texture of the hcp and bcc phases suggests close-packed or nearly close-packed lattice planes remain parallel through both transformations.
Databáze:	MEDLINE
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