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Title: Coordination changes in liquid tin under shock compression determined using in situ femtosecond x-ray diffraction

Journal Article · · Applied Physics Letters
DOI: https://doi.org/10.1063/1.5127291 · OSTI ID:1597213
ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [1];  [2];  [1]; ORCiD logo [1];  [1]; ORCiD logo [1];  [3]; ORCiD logo [4];  [5]; ORCiD logo [5];  [5];  [5]; ORCiD logo [6];  [1];  [1]
  1. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  2. Univ. of Oxford (United Kingdom)
  3. Johns Hopkins Univ., Baltimore, MD (United States)
  4. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  5. SLAC National Accelerator Lab., Menlo Park, CA (United States)
  6. The Univ. of Edinburgh (United Kingdom)

Little is known regarding the liquid structure of materials compressed to extreme conditions, and even less is known about liquid structures undergoing rapid compression on nanosecond timescales. Here, we report on liquid structure factor and radial distribution function measurements of tin shock compressed to 84(19) GPa. High-quality, femtosecond x-ray diffraction measurements at the Linac Coherent Light Source were used to extract the liquid diffuse scattering signal. From the radial distribution function, we find that the structural evolution of the liquid with increasing pressure mimics the evolution of the solid phase. With increasing pressure, we find that the liquid structure evolves from a complex structure, with a low coordination number, to a simple liquid structure with a coordination number of ~12. We provide a pathway for future experiments to study liquids at elevated pressures using high-energy lasers to shock compress materials beyond the reach of static diamond anvil cell techniques.

Research Organization:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA)
Grant/Contract Number:
AC52-07NA27344; AC02-76SF00515
OSTI ID:
1597213
Report Number(s):
LLNL-JRNL--797485; 986015
Journal Information:
Applied Physics Letters, Journal Name: Applied Physics Letters Journal Issue: 26 Vol. 115; ISSN 0003-6951
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English

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