Ray tracing - ESRF
Ray tracing - ESRF
Ray tracing - ESRF
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Focusing properties (von Hamos geometry, 1932)<br />
TOP<br />
source<br />
S<br />
SIDE<br />
ω<br />
w<br />
Manuel Sánchez del Río<br />
ww<br />
ω' = ω + 2 τ sin θ Β<br />
SS<br />
image<br />
<strong>Ray</strong> <strong>tracing</strong> of curved crystal optics (21 of 30)<br />
❑ Mosaic crystals present a defocusing effect in the<br />
plane perpendicular to the diffraction plane<br />
❑ They present a parafocusing effect in the<br />
diffraction plane:<br />
• ❑ focusing of monochromatic radiation in M=1:1<br />
• ❑ Chromatic aberrations in the diffraction plane<br />
• ❑Aberrations produced by the beam penetration in the crystal bulk<br />
Weimar, Oct 4, 1999
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