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Full-Text Articles in Physics
Image Properties In An Aberration-Corrected Photoemission Electron Microscope, Rolf Könenkamp, T. Jones, J. Elstner, Robert Campbell Word, Gertrude Rempfer, Todd Dixon, Luis Almaraz, Walter P. Skoczylas
Image Properties In An Aberration-Corrected Photoemission Electron Microscope, Rolf Könenkamp, T. Jones, J. Elstner, Robert Campbell Word, Gertrude Rempfer, Todd Dixon, Luis Almaraz, Walter P. Skoczylas
Physics Faculty Publications and Presentations
We report recent progress in the construction of a new aberration-corrected photoemission electron microscope. The correcting element in this instrument is a hyperbolic electron mirror which corrects for chromatic and spherical aberration. We present first images obtained with the new instrument and numerical results from trajectory and wave-optical calculations indicating that the resolution can be of the order of 1 nm.
Correction Of Chromatic Aberration With An Electron Mirror, Michael Stewart Mauck
Correction Of Chromatic Aberration With An Electron Mirror, Michael Stewart Mauck
Dissertations and Theses
The theoretical basis for using electron mirrors as correctors of chromatic aberration is presented and an experimental verification of correction of chromatic aberration is demonstrated. A hyperbolic electrostatic electron mirror operating in its converging range and at unity magnification was used as a corrector. A novel separating system with deflections taking place at image planes was developed to implement the mirror without impairing the resolution. Correction was demonstrated in an electron optical probe system. The chromatic aberration was measured by means of the shadows cast by a fine mesh placed near the final image. The experimental method and equipment are …