Low-frequency electromagnetic measurements at the NPE and Hunter`s Trophy: A comparison
- Lawrence Livermore National Lab., CA (United States)
Sensors and recorders were deployed for both the Non-Proliferative Experiment (NPE) and Hunter`s Trophy to measure low-frequency (1-30 Hz) electric and magnetic fields accompanying the detonation. Two stations were used for each event, located at a slant range of about 500 m, with measurements of orthogonal horizontal electric field and orthogonal horizontal and vertical magnetic field. Signals were recorded digitally with at 200 Hz sampling rate. Separate magnetic and electric signals were recorded which can be related both to the detonation and the arrival of the shock wave. The detonation time signal from the nuclear explosion is a relatively short pulse occurring with no detectable delay (within 0.5 ms) ranging from 11-19 ms after the detonation time. The cause of the initial electromagnetic signal for both chemical and nuclear explosions is unknown; the differences between the NPE and Hunter`s Trophy results may be related to the different mechanisms involved with plasma generation between nuclear and chemical explosions.
- Research Organization:
- Lawrence Livermore National Lab., CA (United States)
- OSTI ID:
- 96014
- Report Number(s):
- CONF-9404100--; ON: DE95011413
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
45 MILITARY TECHNOLOGY, WEAPONRY, AND NATIONAL DEFENSE
AMMONIUM NITRATES
CHEMICAL EXPLOSIONS
COMPARATIVE EVALUATIONS
DATA ACQUISITION SYSTEMS
DETECTION
DETONATIONS
ELECTRIC FIELDS
ELECTROMAGNETIC PULSES
FUEL OILS
MAGNETIC FIELDS
MAPS
NEVADA TEST SITE
NON-PROLIFERATION TREATY
NUCLEAR EXPLOSION DETECTION
NUCLEAR EXPLOSIONS
TUNNELS
UNDERGROUND EXPLOSIONS
VERIFICATION
WAVE PROPAGATION