Ultrafast X-Ray Diffraction of Heterogeneous Solid Hydrogen

Levitan, Abraham¹ 

[1]Olin College of Engineering, Needham, MA (United States)

关键词: X-RAY DIFFRACTION;    HYDROGEN;    FCC LATTICES;    HCP LATTICES;    APPROXIMATIONS;    SOLIDS;    KEV RANGE 01-10;    JETS;    ANISOTROPY;    CRYSTAL STRUCTURE;    SPECTRA;    STRAINS OTHER;   

DOI  :  10.2172/1213144
RP-ID  :  SLAC-TN--15-054
PID  :  OSTI ID: 1213144
Others  :  TRN: US1500417

学科分类：材料科学（综合）

美国|英语

来源: SciTech Connect

【 摘 要 】

Angularly resolved x-ray diffraction at 5.5 keV establishes the structure of a 5 ??m 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.