Accession Number : ADA254109


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


Corporate Author : FOREIGN AEROSPACE SCIENCE AND TECHNOLOGY CENTER WRIGHT-PATTERSON AFB OH


Personal Author(s) : Yang, Deqing ; Song, Hongjiang ; Wang, Zhi ; Chen, Ergang


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a254109.pdf


Report Date : 13 Jan 1992


Pagination or Media Count : 15


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.


Descriptors :   *COMPUTATIONS , *FIELD EMISSION , *FORMULAS(MATHEMATICS) , LUMINOSITY , CHINA , FOREIGN


Subject Categories : Numerical Mathematics
      Electricity and Magnetism


Distribution Statement : APPROVED FOR PUBLIC RELEASE