GIWAXS

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Grazing-Incidence Wide-Angle X-ray Scattering (GIWAXS) is a structural measurement technique wherein wide-angle scattering is collected; i.e. large values of the momentum transfer. Because of the inverse nature of reciprocal-space, these large values of q correspond to small distances; WAXS generically probes molecular length-scales.

There is no unambiguous delineation between WAXS and SAXS; generally speaking, WAXS corresponds to angles from approximately 1° to 45°, or q-values from 0.1 Å−1 to 5 Å−1 (6 nm to Angstroms).

Example Data

  • Different representations of data from a P3HT thin film
Raw detector image.
Data converted to q-space.
Data converted to q-space, taking into account the Ewald sphere (notice the 'missing wedge' near the qz axis).
  • A Tungsten-Nickel alloy:

TungstenNickel.png

  • A thin film of rubrene:

Rubrene GIWAXS example.png



See Also