McXtrace - An X-ray ray-trace simulation package

Double Slit Experiment

A first attempt at a double slit experiment, showing 2D interference fringes from two point sources situated 2 cm from each other recorded on a 20x20 cm 2D PSD. The detector is situated 1 m downstream from the source assembly.

Real 2D interference fringes from two point sources on a 2D PSD.

Closeup of center part of fringes.

Aliased 2D interference fringes.

Aliased 2D interference fringes sampled at a different frequency, i.e. with a different pixel size.

Aliasing occurs since <math>\lambda = 1 \mu m \ll \Delta x</math>, where <math>\Delta x \approx 2 mm</math> is the pixel size of the detector, effectively violating the Nyquist sampling theorem.^[1]

Ray tracing through a CRL

Visual ray tracing through a Compound Refractive Lens

References

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Last Modified: Friday, 08-Mar-2013 14:08:21