Electron Beam Generation by Electron Bombardment Induced Cathode Emission

It has been demonstrated that pulsed electron beams can be created by multiplication of a lower current density primary beam impinging on high electron yield targets, similar to those used in photomultiplier tubes. The main results obtained are the generation of: a 17 ampere, 1 microsecond duration...

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Bibliographic Details
Main Authors: Rocca, J J, Szapiro, B, Murray, C
Format: Report
Language:English
Subjects:
ACTIVATION
Electrical and Electronic Equipment
ELECTRON BEAMS
ELECTRONS
PHOTOMULTIPLIER TUBES
PULSES
REPRODUCIBILITY
SURFACES
TARGETS
YIELD
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Summary:It has been demonstrated that pulsed electron beams can be created by multiplication of a lower current density primary beam impinging on high electron yield targets, similar to those used in photomultiplier tubes. The main results obtained are the generation of: a 17 ampere, 1 microsecond duration beam from a 2.5 cm diameter silver-magnesium polycrystalline alloy target by multiplication of a 2.5 ampere primary beam; implementation of a surface activation technique for Ag-Mg targets that allows reproducible yields up 5.