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Extremely Low Frequency (ELF) Vertical Electric Field Exposure of Rats: Irradiation Facility
ARMED FORCES RADIOBIOLOGY RESEARCH INST BETHESDA MD
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An extremely low frequency ELF vertical, electric field irradiation facility consisting of six identical exposure chambers is described. This facility simulates the vertical electric field radiated from the U. S. Navys proposed ELF Communications System, designed to establish worldwide communication with our submarine fleet. This irradiation facility is designed to study the possible bioeffects of ELF on 96 rats equally divided among the six exposure chambers and individually housed in specially modified nonmetallic cages. These cages are designed to minimally perturb the exposure field and provide accurate means to measure food and water consumption. Each exposure chamber can be independently operated up to field strengths of 1000 Vm RMS at any sinusoidal ELF frequency. At 45 Hz, the frequency chosen for this research, chamber cross talk is less than -60 dB and the vertical electric field uniformity within the exposure area is or - 5 percent. A complete description of the ambient 60-Hz electric and magnetic fields is presented. Project was sponsored by the U. S. Naval Medical Research and Development Command, contract number XSB09.
APPROVED FOR PUBLIC RELEASE