A grid photocathode free of the first-order temporal chromatic aberration
D. E. Greenfield
Research and Production Center "Orion", Moscow, Russia
M. A. Monastyrsky, V. A. Tarasov
General Physics Institute, Russian Academy of Science, Moscow, Russia
The paper is devoted to the problem of temporal resolution in electron-optical streak tubes intended for ultrafast processes investigation. The temporal resolution threshold of about 150—200 femtoseconds can be hardly overcome without a principally new approach to the design of electron-optical scheme of such tubes. One of the possibilities, namely the use of a photocathode having rather fine grid structure, is numerically analyzed on the basis of 3D field calculations.
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