Melting and recrystallization of Pb on nanosecond timescales

POSTER

Abstract

We have developed a platform on the NIF laser facility to monitor nanosecond changes in crystal structure using x-ray diffraction, by shaping laser drive pulses to compress a material along a desired path in phase space and probing it at multiple steps along the path with nanosecond-duration x-ray pulses. We will present work to demonstrate shock melting and recrystallization along compression in Pb. \textit{In situ} observation of melting and recrystallization from a liquid phase provide an important constraint on the high pressure melting curve as well as on the kinetics of crystal nucleation and growth.

*This work was performed under the auspices of the U.S. Department of Energy by Lawrence Livermore National Laboratory under Contract DE-AC52-07NA27344

Authors

  • Amy Lazicki

    • Lawrence Livermore Natl Lab

  • Christopher Wehrenberg

    • Lawrence Livermore Natl Lab

  • Jon Eggert

    • Lawrence Livermore Natl Lab

  • Ryan Rygg

    • University of Rochester

  • James McNaney

    • Lawrence Livermore Natl Lab

  • Federica Coppari

    • Lawrence Livermore Natl Lab

  • Joel Bernier

    • Lawrence Livermore Natl Lab

  • Richard Kraus

    • Lawrence Livermore Natl Lab