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Volume 39 Issue 4
Apr 2025
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Chinese Journal of High Pressure Physics  > 2025  >  39(4): 043401.
LIU Jin, WANG Qiannan, LI Jiangtao. Improvement of Lattice Parameter Accuracy in Single Crystal XRD Based on a Laser-Induced X-Ray Source[J]. Chinese Journal of High Pressure Physics, 2025, 39(4): 043401. doi: 10.11858/gywlxb.20240946
Citation: LIU Jin, WANG Qiannan, LI Jiangtao. Improvement of Lattice Parameter Accuracy in Single Crystal XRD Based on a Laser-Induced X-Ray Source[J]. Chinese Journal of High Pressure Physics, 2025, 39(4): 043401. doi: 10.11858/gywlxb.20240946
shu

Improvement of Lattice Parameter Accuracy in Single Crystal XRD Based on a Laser-Induced X-Ray Source

doi: 10.11858/gywlxb.20240946
  • 1.

    National Key Laboratory of Shock Wave and Detonation Physics, Institute of Fluid Physics, China Academy of Engineering Physics, Mianyang 621999, Sichuan, China

  • 2.

    Pico Electron Microscopy Center, Innovation Institute for Ocean Materials Characterization Technology, Center for Advanced Studies in Precision Instrument, Hainan University, Haikou 570228, Hainan, China

  • 3.

    State Key Laboratory for Environment-Friendly Energy Materials, Southwest University of Science and Technology, Mianyang 621010, Sichuan, China

Funds:  National Natural Science Foundation of China (12102410); Fund of National Key Laboratory of Shock Wave and Detonation Physics (JCKYS2022212005)
More Information
  • Author Bio:

    LIU Jin (1978－), male, Ph.D, associate researcher, major in X-ray diagnostic technique. E-mail: ljin_ifp@caep.cn

  • Corresponding author: LI Jiangtao (1987－), male, Ph.D, associate researcher, majored in shock wave physics and diagnostics of shock induced phase transition. E-mail: lchero08@163.com
  • Received Date: 25 Nov 2024
  • Rev Recd Date: 10 Jan 2025
    • Available Online: 26 Mar 2025
  • Issue Publish Date: 01 Apr 2025
    Abstract
  • The lattice parameter, measured with sufficient accuracy, can be utilized to evaluate the quality of single crystals and to determine the equation of state for materials. We propose an iterative method for obtaining more precise lattice parameters using the interaction points for the pseudo-Kossel pattern obtained from laser-induced X-ray diffraction (XRD). This method has been validated by the analysis of an XRD experiment conducted on iron single crystals. Furthermore, the method was used to calculate the compression ratio and rotated angle of an LiF sample under high pressure loading. This technique provides a robust tool forin-situcharacterization of structural changes in single crystals under extreme conditions. It has significant implications for studying the equation of state and phase transitions.

     

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