Some Analytic Models for Quasi-Static Source Region EMP: Application to Nuclear Lightning.

Abstract

Analytic solutions and numerical results are obtained for three models for quasi-static source region EMP from a nuclear surface burst, representing electron-dominated air conductivity, ion-dominated air conductivity, and an intermediate situation with electron-dominated conductivity at short ranges and ion-dominated conductivity at long ranges. Comparisons are made with the results of previous approximate analyses and with the gross features of lightning strokes which were observed in the 1- to 10-ms time frame on the Mike shot. Uncertainties in air chemistry and ionization rate parameters give rise to roughly + or - 50 percent uncertainties in electric field strength and roughly factor-of-three uncertainties in the applicable time frame for each of the above-mentioned models. Within these uncertainties, the EMP predictions appear to be consistent with the gross features of the observed lightning. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Nov 01, 1980
Accession Number
ADA109644

Entities

People

  • M. K. Grover

Tags

Communities of Interest

  • Air Platforms
  • Materials and Manufacturing Processes
  • Space
  • Weapons Technologies

DTIC Thesaurus Topics

  • Air Force
  • Contractors
  • Curvature
  • Department Of Defense
  • Dose Rate
  • Electric Fields
  • Electromagnetic Fields
  • Electrons
  • Equations
  • Geometry
  • Lepidoptera
  • Lightning
  • Nuclear Radiation
  • Numerical Analysis
  • Security
  • Space Charge
  • Surface Burst

Fields of Study

  • Physics

Readers

  • Explosive Engineering.
  • Plasma Physics / Magnetohydrodynamics
  • Regression Analysis.

Technology Areas

  • Microelectronics