Simulation of optical characteristics in nonaxisymmetrical image intensifiers

Author

Adamiak, Kazimierz ; Dabrowski, Waldemar J. ; Fenster, Aaron

Author_Institution

Dept. of Electr. & Comput. Eng., Univ. of Western Ontario, London, Ont., Canada

Volume

34

Issue

2

fYear

1998

Firstpage

273

Lastpage

278

Abstract

This paper presents and discusses results of numerical simulation of the novel design of an image intensifier. Contrary to the traditional configuration, this intensifier has a rectangular geometry, but a much larger number of electrodes than the cylindrical device, in order to imitate the axisymmetrical electric field distribution. The optical characteristics are determined by numerically tracing the trajectories of electrons ejected from the input screen/photocathode assembly and reconstructing the output image. The results presented show the feasibility of the idea of a nonaxisymmetrical image intensifier

Keywords

electric fields; electron emission; image intensifiers; image reconstruction; photocathodes; axisymmetrical electric field distribution; ejected electrons trajectory tracing; electrodes; input screen; nonaxisymmetrical image intensifiers; numerical simulation; optical characteristics; output image reconstruction; photocathode; rectangular geometry; Biomedical imaging; Biomedical optical imaging; Cathodes; Computed tomography; Electrodes; Electron beams; Electron optics; Image intensifiers; Image reconstruction; X-rays;

fLanguage

English

Journal_Title

Industry Applications, IEEE Transactions on

Publisher

ieee

ISSN

0093-9994

Type

jour

DOI

10.1109/28.663467

Filename

663467