TITLE

Electrostatic electron-optical crossed lens with controlled astigmatism

AUTHOR(S)
Baranova, L. A.; Read, F. H.
PUB. DATE
June 1994
SOURCE
Review of Scientific Instruments;Jun94, Vol. 65 Issue 6, p1993
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
A crossed lens consisting of square and rectangular apertures in four equally spaced electrodes has been studied. The two inner apertures are rectangular with their longer directions mutually at right angles and the outer apertures are square. The strength and astigmatism of the lens can be separately controlled through the voltages applied to the rectangular apertures, enabling line images of variable position and length to be produced from point objects.
ACCESSION #
9784860

 

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