Multi-Dimensional Modeling of Electron Field Emission With and Without Laser Excitation

Abstract

The production of electron beam of high brightness and low emittance is critical for a variety of scientific and technological applications such as high power vacuum coherent radiation source such as microwave sources, free electron lasers (FEL) and electron imaging system. The focus is to have a robust cathode using field emission mechanism based on the process of electron tunneling from a metal's surface, which is also known as Fowler Nordheim (FN) law. When a laser is used to excite the electron emission, the mechanism is known as the Fowler- Dubridge (FD) model. In this project, we aim to improve the basic of fundamental understandings of the electron emission process (related to FN and FD models) by developing multi-dimensional (2D or 3D) models.

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Document Details

Document Type
Technical Report
Publication Date
Aug 31, 2010
Accession Number
ADA528075

Entities

People

  • Lay-kee Ang

Organizations

  • Nanyang Technological University

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Coherent Radiation
  • Electron Beams
  • Electron Emission
  • Electrons
  • Emission
  • Emitters
  • Excitation
  • Field Emission
  • Free Electron Lasers
  • Free Electrons
  • Lasers
  • Photoexcitation
  • Radiation
  • Shot Noise
  • Two Dimensional
  • Work Functions

Fields of Study

  • Physics

Readers

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Technology Areas

  • Directed Energy
  • Microelectronics