Optimized Quadrupole-Octupole C3/C5 Aberration Corrector for STEM | Zendy

Niklas Dellby | Zendy; Ondrej L. Krivanek | Zendy; Matthew F. Murfitt | Zendy

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Optimized Quadrupole-Octupole C3/C5 Aberration Corrector for STEM

Author(s) -

Niklas Dellby,

Ondrej L. Krivanek,

Matthew F. Murfitt

Publication year - 2008

Publication title -

physics procedia

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.26

H-Index - 61

ISSN - 1875-3892

DOI - 10.1016/j.phpro.2008.07.094

Subject(s) - quadrupole , spherical aberration , optics , physics , beam (structure) , scanning transmission electron microscopy , power (physics) , quadrupole magnet , transmission (telecommunications) , transmission electron microscopy , atomic physics , computer science , quantum mechanics , telecommunications , lens (geology)

We compare different trajectories for C5-free C3 aberration correctors for scanning transmission electron microscopes, and find an asymmetric solution that minimizes the CC contributions and power supply stability requirements compared to a symmetric one. We further study the field aberrations of a C5-free quadrupole-octupole C3 aberration corrector and find that they are similar to those of sextupole C3-correctors in their suitability for wide-beam imaging applications. © 2008 Elsevier B.V. All rights reserved PACS: 41.81.Gy

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