RONCHIGRAM
Ronchigram
π/4 Phase Limit
e- Beam Energy = keV
⇒ Wavelength = pm
○ Objective Aperture Semiangle = mrad
Diffraction Limited Resolution = pm
○ π/4 Aperture Semiangle = mrad
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χ(α,Φ) = Σn,m[ Cn,m α
n+1cos(m(Φ-Φn,m))/(n+1) ]
3rd Order Spherical
C3
C30:
nm
5th Order Spherical
C5
C50:
mm
Chromatic Aberration
Cc
Cc: 0 m
Display Size (pixels)= Display Size (mrad) =
Sample Scale (Factor of Display Size (px))=
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