Title :
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
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;
Journal_Title :
Industry Applications, IEEE Transactions on
