Diffraction orders of grazing incidence

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SUMMARY

The discussion focuses on the diffraction orders of a honeycomb lattice under grazing incidence conditions, specifically with an incident wave of 400 nm at a 75-degree angle to the surface normal. The primary equation referenced is the Von-Laue condition, which states that |G_2d| must be less than or equal to 2*|k_s|, where G represents the two-dimensional reciprocal lattice vector and k denotes the scattering wavevector. Participants emphasize the importance of considering the lattice surface structural constant in the diffraction analysis.

PREREQUISITES
  • Understanding of honeycomb lattice structures
  • Familiarity with diffraction principles, specifically Von-Laue conditions
  • Knowledge of wavevector concepts in physics
  • Experience with low energy electron diffraction (LEED) techniques
NEXT STEPS
  • Research the mathematical derivation of Von-Laue conditions in diffraction
  • Study the impact of lattice surface structural constants on diffraction patterns
  • Explore advanced concepts in low energy electron diffraction (LEED)
  • Investigate the properties of two-dimensional reciprocal lattice vectors
USEFUL FOR

Physicists, materials scientists, and students studying solid-state physics or surface science, particularly those interested in diffraction phenomena and lattice structures.

Hamedo
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Homework Statement


We have a honeycomb lattice. There is an incident wave of 400 nm, whose wavevector has an angle of 75 degree with the surface's normal. This problem is similar to LEEDS ( low energy electron diffraction).

Homework Equations


What is the condition of diffraction i.e. which orders achieve Von-Laue conditions ?

The Attempt at a Solution


I tried to put that |G_2d|<=2*|k_s|, where G is the 2-dimension reciprocal lattice vector, and k is the length of the scattering wavevector ( |K_incidence|=|K_scattering|).
 
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hmm that's interesting, did you take into account the lattice surface structural constant into account?
 

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