Accession Number:

ADA024803

Title:

Nuclear Electromagnetic Pulse Simulation by Point Source Injection Techniques for Shielded and Unshielded Penetrations

Descriptive Note:

Technical rept.

Corporate Author:

HARRY DIAMOND LABS ADELPHI MD

Personal Author(s):

Report Date:

1975-12-01

Pagination or Media Count:

60.0

Abstract:

Nuclear electromagnetic pulse simulation by point source injection techniques were investigated for shielded and unshielded system penetrations. Circuit theory is applied to the unshielded case and a generalized injection system is suggested. To determine the relationship between point source current injection on the external shield of a cable and its response to free-field EMP excitation, general transmission line solutions were obtained in the frequency domain for each case. A numerical transform was used to obtain time domain waveforms of the external and internal currents. Both solutions were verified with experimental data collected on a braided shield coaxial cable that exhibited both types of reactive coupling inductive and capacitive through its shield. Shielding effectiveness transfer functions were experimentally obtained with a coaxial cable driver to determine the shield parameters.

Subject Categories:

  • Nuclear Weapons

Distribution Statement:

APPROVED FOR PUBLIC RELEASE