Accession Number:

ADA254109

Title:

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

Descriptive Note:

Corporate Author:

FOREIGN AEROSPACE SCIENCE AND TECHNOLOGY CENTER WRIGHT-PATTERSON AFB OH

Report Date:

1992-01-13

Pagination or Media Count:

15.0

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 articles formula and the results of calculations with the numerical values of electronic computers are basically in line with each other.

Subject Categories:

  • Numerical Mathematics
  • Electricity and Magnetism

Distribution Statement:

APPROVED FOR PUBLIC RELEASE