Electron Beam Generation by Electron Bombardment Induced Cathode Emission

Abstract

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.

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Document Details

Document Type
Technical Report
Publication Date
Jul 07, 1989
Accession Number
ADA218203

Entities

People

  • B. Szapiro
  • C. Murray
  • Jorge G. Rocca

Organizations

  • Colorado State University

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Classification
  • Colorado
  • Current Density
  • Electrical Engineering
  • Electron Beams
  • Electron Emission
  • Electron Energy
  • Electron Guns
  • Electrons
  • Emission
  • Engineering
  • Frequency
  • Magnesium
  • Photomultiplier Tubes
  • Space Charge
  • Thermal Conductivity
  • United States

Fields of Study

  • Physics

Readers

  • Materials Science and Engineering.
  • Pulsed Power and Plasma Physics.

Technology Areas

  • Directed Energy
  • Directed Energy - Pulsed-Laser Deposition
  • Microelectronics