A Semiempirical Formula for Calculating the Coefficients for Field Emission Tip Forms

Abstract

This article presents a formula for calculating the general field emission system tip shape or form coefficient. Using this formula and numerical value calculation methods we carried out, respectively, calculations and comparisons on values for the four types of field emission systems--those with tips presenting semispherical shapes, ellipsoid shapes, rotating parabolic shapes, and hyperbolic shapes. The results clearly show that calculations using the Beta values obtained from this article's formula and the results of calculations with the numerical values of electronic computers are basically in line with each other.

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Document Details

Document Type
Technical Report
Publication Date
Jan 13, 1992
Accession Number
ADA254109

Entities

People

  • Deqing Yang
  • Ergang Chen
  • Hongjiang Song
  • Zhi Wang

Organizations

  • National Air and Space Intelligence Center

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Accuracy
  • Amplification
  • Coefficients
  • Computers
  • Current Density
  • Curvature
  • Electric Fields
  • Electrodes
  • Electron Beams
  • Emission
  • Equations
  • Field Emission
  • Foreign Technology
  • Long Life
  • Measurement
  • Shape
  • Simulations

Readers

  • Aerodynamics.
  • Calculus or Mathematical Analysis
  • Structural Dynamics.

Technology Areas

  • Microelectronics