First Advisor

Gertrude Rempfer

Date of Publication

1993

Document Type

Dissertation

Degree Name

Doctor of Philosophy (Ph.D.) in Environmental Sciences and Resources: Physics

Department

Environmental Science and Management

Language

English

Subjects

Achromatism, Electron optics -- Technological innovations

DOI

10.15760/etd.1170

Physical Description

2, viii, 76 leaves: ill. 28 cm.

Abstract

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 described. The experiment serves as a verification of the theory as well as a successful test of the method of separating the electron beams traveling to and from the mirror.

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Comments

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Persistent Identifier

http://archives.pdx.edu/ds/psu/4496

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