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Title: Ultrafast X-Ray Diffraction of Heterogeneous Solid Hydrogen

Angularly resolved x-ray diffraction at 5.5 keV establishes the structure of a 5 µm diameter solid hydrogen jet, providing a foundation for analysis of hydrogen in a warm dense matter state. The jet was composed of approximately 65 % ± 5% HCP and 35 % ± 5% FCC by volume with an average crystallite size on the order of hundreds of nanometers. Broadening in the angularly resolved spectrum provided strong evidence for anisotropic strain up to approximately 3 % in the HCP lattice. Finally, we found no evidence for orientational ordering of the crystal domains.
Authors:
 [1]
  1. Olin College of Engineering, Needham, MA (United States)
Publication Date:
OSTI Identifier:
1213144
Report Number(s):
SLAC-TN--15-054
TRN: US1500417
DOE Contract Number:
AC02-76SF00515
Resource Type:
Technical Report
Research Org:
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Org:
USDOE Office of Science (SC)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; X-RAY DIFFRACTION; HYDROGEN; FCC LATTICES; HCP LATTICES; APPROXIMATIONS; SOLIDS; KEV RANGE 01-10; JETS; ANISOTROPY; CRYSTAL STRUCTURE; SPECTRA; STRAINS OTHER