MAGIC

From FEFF

Useful

MAGIC emagic 

The MAGIC card makes feff calculate cross sections as a function of collection angle at a particular energy loss. So, in addition to the energy-resolved output produced by the EELS cards, the MAGIC card produces angle-resolved output.

The name MAGIC was chosen because the output of this card enables one to find the magic angle for a material very quickly : run feff for two different orientations, and see where the sp2-curves cross. This gives you the magic collection angle for the collection angle and EELS edge chosen in `feff.inp'. Plus the entire workings of the eels module are based on black magic, of course.

* create a plot that shows the sp^2 ratio at 20 eV above threshold.
MAGIC 20
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