Emission optics of the Steigerwald-type electron gun

1 2 M ay 1 99 9 Emission Optics of the Steigerwald Type Electron

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 ...

The Simulation and Analysis of Secindary Emission Microwave Electron Gun

Several new approaches for producing high-current, short-duration pulses of electron beams were reviewed briefly in this paper. The paper presents mainly the simulation and analysis of a secondary emission microwave electron gun. The movement of electron in microwave electric field was simulated and the self-bunching process of the secondary emission electrons in the gun was also proved. Some f...

the investigation of the relationship between type a and type b personalities and quality of translation

چکیده ندارد.

Compact Electron Gun Based on Secondary Emission Through Ionic Bombardment

We present a new compact electron gun based on the secondary emission through ionic bombardment principle. The driving parameters to develop such a gun are to obtain a quite small electron gun for an in-flight instrument performing Electron Beam Fluorescence measurements (EBF) on board of a reentry vehicle in the upper atmosphere. These measurements are useful to characterize the gas flow aroun...

Electron Gun Technology