Some Analytic Models for Quasi-Static Source Region EMP: Application to Nuclear Lightning.
Topical rept. 5 Jan-1 Nov 80,
R AND D ASSOCIATES MARINA DEL REY CA
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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
- Nuclear Weapons
- Electromagnetic Pulses