Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

A dynamical Bragg equation for high-order Laue zone reflections

Chen1, Howitt, Harker

  • 1Department of Chemical Engineering and Materials Science, University of California at Davis, 95616, USA.

Scanning
|July 11, 2000
PubMed
Summary

A new dynamical Bragg equation for high-order Laue zone (HOLZ) reflections was derived using Bloch wave theory. This approach reveals dynamical shifts in HOLZ reflections, unlike previous methods.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Conformation of Fibronectin Fibrils Varies: Discrete Globular Domains of Type III Repeats Detected.

Microscopy and microanalysis : the official journal of Microscopy Society of America, Microbeam Analysis Society, Microscopical Society of Canada·1999
Same author

A Structural Equation Model of the Effects of Negative Affectivity, Leader-Member Exchange, and Perceived Job Mobility on In-role and Extra-role Performance: A Chinese Case.

Organizational behavior and human decision processes·1999
Same author

Preparation of Palladium Ultrafine Particles in Reverse Micelles.

Journal of colloid and interface science·1999
Same author

New taxoids from the seeds of taxus chinensis

Journal of natural products·1999
Same author

Self-assembly of ordered microporous materials from rod-coil block copolymers

Science (New York, N.Y.)·1999
Same author

Conformational Structure of Triblock Copolymers by FT-Raman and FTIR Spectroscopy.

Journal of colloid and interface science·1999

Area of Science:

  • Solid State Physics
  • Crystallography
  • Electron Diffraction

Background:

  • The kinematical Bragg condition is widely used for analyzing electron diffraction patterns.
  • However, it does not fully account for dynamical scattering effects, particularly in high-order Laue zone (HOLZ) reflections.
  • A more accurate description is needed for precise crystallographic analysis.

Purpose of the Study:

  • To derive a dynamically corrected Bragg equation for HOLZ reflections.
  • To compare this new equation with the traditional kinematical Bragg condition.
  • To investigate the occurrence of dynamical shifts in HOLZ and zero-order Laue zone (ZOLZ) reflections.

Main Methods:

  • Derivation of the dynamical Bragg equation using the Bloch wave formalism.

Related Experiment Videos

  • Comparison of the derived equation with the kinematical Bragg equation.
  • Analysis of HOLZ and ZOLZ reflections in the symmetrical Laue case.

    • Main Results:

    • A novel dynamical Bragg equation for HOLZ reflections was successfully derived.
    • The derived equation reduces to the kinematical equation when crystal potential is zero.
    • Dynamical shifts were observed for HOLZ reflections, but not for ZOLZ reflections in the symmetrical Laue case.

    Conclusions:

    • The Bloch wave formalism provides a more accurate description of HOLZ reflections than the kinematical approach.
    • The derived dynamical Bragg equation offers improved precision for analyzing electron diffraction data.
    • Understanding dynamical shifts is crucial for accurate interpretation of HOLZ patterns in materials science.