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Ultrafast X-Ray Diffraction Studies of the Phase Transitions and Equation of State of Scandium Shock Compressed to 82 GPa

Journal Article · · Physical Review Letters
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  1. Univ. of Edinburgh, Scotland (United Kingdom)
  2. European X-ray Free-Electron Laser (XFEL), Hamburg (Germany)
  3. Univ. of Oxford (United Kingdom)
  4. Atomic Weapons Establishment (AWE), Reading (United Kingdom)
  5. Atomic Weapons Establishment (AWE), Reading (United Kingdom); Imperial College, London (United Kingdom)
  6. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  7. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  8. SLAC National Accelerator Lab., Menlo Park, CA (United States)
  9. Univ. of Edinburgh, Scotland (United Kingdom); Research Complex at Harwell (RCaH), Didcot (United Kingdom)

Using x-ray diffraction at the Linac Coherent Light Source x-ray free-electron laser, we have determined simultaneously and self-consistently the phase transitions and equation of state (EOS) of the lightest transition metal, scandium, under shock compression. On compression scandium undergoes a structural phase transition between 32 and 35 GPa to the same bcc structure seen at high temperatures at ambient pressures, and then a further transition at 46 GPa to the incommensurate host-guest polymorph found above 21 GPa in static compression at room temperature. Furthermore, shock melting of the host-guest phase is observed between 53 and 72 GPa with the disappearance of Bragg scattering and the growth of a broad asymmetric diffraction peak from the high-density liquid.

Research Organization:
SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA); USDOE Office of Science (SC), Basic Energy Sciences (BES); USDOE Office of Science (SC), Fusion Energy Sciences (FES); Engineering and Physical Sciences Research Council (EPSRC)
Grant/Contract Number:
AC52-07NA27344; AC52-06NA25396; AC02-76SF00515
OSTI ID:
1361149
Alternate ID(s):
OSTI ID: 1338660
OSTI ID: 1879797
OSTI ID: 1392882
Journal Information:
Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 2 Vol. 118; ISSN 0031-9007; ISSN PRLTAO
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

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Cited By (20)

Femtosecond diffraction studies of solid and liquid phase changes in shock-compressed bismuth journal November 2018
Direct imaging of ultrafast lattice dynamics text January 2019
Fifth User Workshop on high-power lasers at the Linac Coherent Light Source journal September 2018
Interactions between coherent twin boundaries and phase transition of iron under dynamic loading and unloading journal September 2017
Simultaneous 8.2 keV phase-contrast imaging and 24.6 keV X-ray diffraction from shock-compressed matter at the LCLS journal May 2018
Coordination changes in liquid tin under shock compression determined using in situ femtosecond x-ray diffraction journal December 2019
On the chain-melted phase of matter journal April 2019
Short-wavelength free-electron laser sources and science: a review journal October 2017
Kinetics and structural changes in dynamically compressed bismuth journal August 2019
Nanosecond Melting and Recrystallization in Shock-Compressed Silicon journal September 2018
Identification of Phase Transitions and Metastability in Dynamically Compressed Antimony Using Ultrafast X-Ray Diffraction journal June 2019
Measurement of Body-Centered Cubic Gold and Melting under Shock Compression journal July 2019
GAPD : a GPU-accelerated atom-based polychromatic diffraction simulation code journal February 2018
Pulse intensity characterization of the LCLS nanosecond double-bunch mode of operation journal March 2018
Deducing density and strength of nanocrystalline Ta and diamond under extreme conditions from X-ray diffraction journal January 2019
Characterization of the LCLS “nanosecond two-bunch” mode for x-ray speckle visibility spectroscopy experiments
  • Sun, Yanwen; Zhu, Diling; Song, Sanghoon
  • X-Ray Free-Electron Lasers: Advances in Source Development and Instrumentation, Advances in X-ray Free-Electron Lasers Instrumentation IV https://doi.org/10.1117/12.2265454
conference July 2017
Direct imaging of ultrafast lattice dynamics journal March 2019
Short-wavelength free-electron laser sources and science: a review text January 2017
Simultaneous 8.2 keV phase-contrast imaging and 24.6 keV X-ray diffraction from shock-compressed matter at the LCLS text January 2018
Interactions between Coherent Twin Boundaries and Phase Transition of Iron under Dynamic Loading and Unloading text January 2017

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