Accession Number : AD0774152

Title :   A Method for Estimating the X-Ray Produced Electromagnetic Pulse Observed in the Source Region of a High-Altitude Burst.

Descriptive Note : Topical rept.,

Corporate Author : MISSION RESEARCH CORP SANTA BARBARA CALIF

Personal Author(s) : Higgins,D. F. ; Longmire,C. L. ; O'Dell,A. A.

Report Date : 29 NOV 1973

Pagination or Media Count : 39

Abstract : The report discusses a method for estimating the X-ray produced EMP fields seen by an observer inside the high-altitude source region. The electric field is assumed to be primarily radial; thus the time rate of change of this radial field is directly proportional to the total current density. The current density is divided into two parts. The primary current is produced by the high-energy photoelectrons created by the X-ray flux of the weapon. The secondary current is due to the low-energy ionization electrons. A swarm theory treatment relating the average electron energy, number density, and drift velocity is used to deal with these low-energy secondaries. As a net result, five coupled differential equations are obtained which must be solved to find the radial electric field. (Author)

Descriptors :   *Nuclear explosions, *Electromagnetic pulses, *X rays, Ionization, Maxwells equations, Electron energy, High altitude, Airburst

Subject Categories : Nuclear Weapons

Distribution Statement : APPROVED FOR PUBLIC RELEASE