A nominal set of high-altitude EMP environments

Technical Report · Sun Feb 01 04:00:00 EST 1987

OSTI ID:7096596

Longmire, C L; Hamilton, R M; Hahn, J M

This report presents high-altitude EMP (HEMP) environments calculated by the CHAP code for a nominal large yield burst at 400 km over the central US. Nominal, unclassified weapon output parameters were used, along with unclassified EMP theory and calculational techniques. While the resulting environments do not represent upper bounds, they should be useful in developing understanding of the effect of HEMP on electrical and electronic systems. The calculated environments illustrate the wide variability of the HEMP from a single burst, depending on ground range and azimuth from ground zero. Analytic fits to the HEMP fields are provided to facilitate coupling calculations. The CHAP results are justified by a detailed examination of Compton currents, air conductivities, and the resulting fields. It is shown that both HEMP theory and the calculations conserve energy scrupulously.

• Research Organization: Mission Research Corp., Santa Barbara, CA (USA); Oak Ridge National Lab., TN (USA)
• DOE Contract Number: AC05-84OR21400
• OSTI ID: 7096596
• Report Number(s): ORNL/Sub-86-18417/1; MRC-R-991R-1; ON: DE87006022
• Country of Publication: United States
• Language: English

Related Subjects

45 MILITARY TECHNOLOGY, WEAPONRY, AND NATIONAL DEFENSE
450202* -- Explosions & Explosives-- Nuclear-- Weaponry-- (-1989)
AIR
ATMOSPHERIC EXPLOSIONS
BASIC INTERACTIONS
C CODES
COMPTON EFFECT
COMPUTER CALCULATIONS
COMPUTER CODES
ELASTIC SCATTERING
ELECTRIC CONDUCTIVITY
ELECTRIC FIELDS
ELECTRICAL PROPERTIES
ELECTROMAGNETIC INTERACTIONS
ELECTROMAGNETIC PULSES
ELECTROMAGNETIC RADIATION
EXPLOSIONS
FLUIDS
GASES
INTERACTIONS
IONOSPHERIC EFFECTS
NUCLEAR EXPLOSIONS
PHYSICAL PROPERTIES
PULSES
RADIATIONS
SCATTERING