MEASUREMENT OF THE MAGNETIC COMPONENT OF THE ELECTROMAGNETIC FIELD NEAR A NUCLEAR DETONATION
Abstract
The magnetic component of the electromagnetic field generated by several nuclear detonations during Operation Plumbbob was measured at distances ranging from 650 to 14,400 feet from ground zero. The output from low- impedance, shielded-loop antennas was amplified, in some cases integrated, and then recorded on magnetic tape by specially designed, ruggedized, and well shielded tape recorders. Oscillographic repre sentations obtained from the tapes upon playback include records of field intensity versus time and the time derivative of field intensity versus time. It was determined that the major component of the field is in the azimuthal direction, and that relatively strong vertical and radial fields also exist. Initially sharply rising fields, lasting no longer than 100 msec are followed by longer persistence signals with rise times of millisecond order. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- May 08, 1962
- Accession Number
- AD0336550
Entities
People
- F. N. Wimenitz
- J. C. Hoadley
- J. S. Wicklund
- P. H. Haas
Organizations
- Harry Diamond Laboratories