Emission Optics of the Steigerwald Type Electron Gun

Details Emission Optics of the Steigerwald Type Electron Gun Emission Optics of the Steigerwald Type Electron Gun

1999-05-12

arxiv.org/abs/physics/9905031v1

Physics

Optics

14 pages, 10 figures

Scientific paper

10.1063/1.1150053

The emission optics of a Steigerwald type electron gun is re-examined. The virtual and real points of divergence, divergence angles and beam-widths of the electron beams at different telefocusing strength are measured in detail for first time . Two different Wehnelt cylinders are used to establish a contrasting viewpoint. The original `focusing' curves measured by Braucks are reconstructed and will be explained only through a `new' interpretation which is different from the conventional views. While the image of the emitting surface in front of the filament is indeed telefocused beyond the anode, the envelope of the beam does not `focus' as expected. A new model for the emission mechanism is established based on our results.

Affiliated with

Also associated with

No associations

Rating

Emission Optics of the Steigerwald Type Electron Gun does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Emission Optics of the Steigerwald Type Electron Gun, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Emission Optics of the Steigerwald Type Electron Gun will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-247999