An Examination of the Adequacy of the Three-Species Air Chemistry Treatment for the Prediction of Surface-Burst EMP.
Topical rept. Apr 74-Dec 75,
MISSION RESEARCH CORP SANTA BARBARA CALIF
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In the past the calculation of the air conductivity for use in ground-burst EMP codes has been accomplished through the solution of a three species, lumped parameter set of air chemistry equations. This report examines the adequacy of this treatment with respect to a more complete solution of the air chemistry equations using the DCHEM code. The study is performed for variations in the peak air ionization rate and the water vapor fraction possible electron temperature dependences normally associated with large electric EMP fields were, however, neglected in order to narrow the scope of the effort. The conclusions of this study indicate that the lumped parameter approach may be usable, but the coefficients employed in the past were in error.
- Atmospheric Physics
- Inorganic Chemistry